Match Application Number Document Title
1 200410046666 Process for fire enriching valuable metal from marine reched cobalt shell block
A kind of fiery gathering method of valuable metal in the ocean cobalt-bearing crust, which relates to the metallurgy chemical areas of containing Mn, Co, Ni, Cu, P etc ocean metal miner...
2 200410056773 Alloy steel powder for powder metallurgy
An alloy steel powder for powder metallurgy includes an iron-based powder containing about 0.5 mass percent or less of Mn as a prealloyed element and 0.2 to about 1.5 mass percent of Mo ...
3 85100772 Method of making large and medium steel moulds from blast-melted iron treated w...
The present invention discloses a method of casting large and medium size steel moulds from liquid iron directly from blast furnace without further heating and treated with trace amount ...
4 85100672 Steel for thick walled hyperpressure containers and its manufacturing technology
This invention concerns the steel for hyperpressure containers, used to make thick walled hyper-pressure containers subject to working pressure of above 1000 ky/cm2. Aiming at the disadv...
5 85100754 Low-silicon slow-acting nodulariser
The nodulariser is made by mixing and pressinf re-si-fe powder, Mg powder mode rater.It is suit for pig-iron with higher-silicon content,so crap.returns of ductile iron can be fully used...
6 85102457 Eutectic silicon, copper, magnesium, nickel and tellurium series aluminium allo...
This invention is developed by adopting the tellurium and antimong compound crystallite alloying techanical measure on the basis of ZL109 alloy. In comparison with the ZL109 alloy, its m...
7 85102469 Manganese-nitrogen high temp. resistant steel
In this invention, using the high chrome, high carbon, no-nickel and nitrogen containing recipe, a metallographic microstructure consisting mainly of austenite and containing some carbid...
8 85100670 Method for mfg. super abrasion and corrosion resistant part using metallic cera...
The main feature of the invention is: taking sheet metallic ceramics as build-up welding stuffing, and, instead of argon arc welding, taking the common welding electrod or carbon dioxide...
9 85100141 Anti-stress corrosion sealing alloy
The alloy belongs to the definite expansion alloys of Fe-Ni-Co series and Fe-Ni-Co-Cu series, which are used to seal the ceramic or hard glass. The aim of this invention is to solve the ...
10 85100080 Low carbon air cooled nodular bainite steel
Main composition of this steel is: C 0.1-0.25%, Si 0.4-1.5%, Mn 2.2-3.0%, B 0.0005-0.005% Fe-the remainder (%wt.); or C 0.1-0.25%, Si 0.4-1.5%, Mn 2.2-3.0%, B 0.0005-0.005%, V 0.04-0.15%...
11 85100066 Ductile low-nickel-resist austenite nodulas cast iron
The recommended components of the ductile low-nickel-resist austenite nodulas cast iron are (in pts.wt.) C 3-4, Si 2-4, Mn 3-16, Cu 1-3.5, Al 0-4.5, Ni 0-10. Its major performance is the...
12 85100342 Tungsten contact point made by powder metallurgy
Tungsten contact point of the present invention is made by powder metallurgical technology. Its charactor is: simple process-only five technical operations are required. By addition of o...
13 85100320 Long efficacy fusing agent for aluminum-silicon alloyage
Main components of this fusing agent are sodium, strontium complex salt and catalyst. This agent is poisonless, it combines refining and modifying in one treatment, it is long efficacy i...
14 85100143 Easy-to-solder alloy for hot coating of lead wire of electronic devices
This alloy is an alloy coating smelted from Ce, Sn and Pb in vacuum or under inert gas blanketing. There are 2 brands of this alloy, GH-1 and GH-2. The coating on the surface of lead wir...
15 85100368 Antisticking carbon gluer for carbide vacuum sintering
It is a black non-texic water-soluble glue which comprises 25-36 wt.% of high pure carboneous material (I), 8-14 wt.% of a hexamine (II), 3-7 wt.% of saccharides (III),8-15wt.% of surfac...
16 85100580 Corrosion-resisting, bright and colourable pressing Al-alloy
This new Al-alloy is made by addition of 0.15-0.8%(wt.) rare earth elements to an Al-alloy which contains (in wt.%) Mg 3.5-5.5, Zn 0.1-4.5, Mn 0.1-0.6, Cu 0.05-0.1, Fe 0.2-1.0, Si 0.2-1....
17 85100348 Manufacture of dual-crystal wolfram carbide-cobalt alloy with oplimal satio 2.2
This is a technological method to manufacture dual crystal structure WC-CO alloy. Its average WC crystal is 2.2-3.2 imcrons with an optimal ratio K=WC (five)/WC (large)=2.2 -0.1. The cha...
18 85100649 Ultra-temp. abrasion-resistant cast nickel based alloy
The alloy of present invention is characterized by its oxidation resistance and abrasion resistance at ultra-temp. (is not less than 1200 deg.C). It is suitable for making parts of high ...
19 85100647 Controlled cooling reinforcing bar containing trace amount of titanium
Controlled cooling reinforcing bar containing trace amount of titanium is a nonstressed reinforcing bar used in reinforced concrete members. It contains a trace amount of alloy-element t...
20 85100598 Decarbonization of molten iron by centrifugalization and combustion
This invention is to reduce carbon content of molten iron. The molten iron is subjected to centrifugal force, so that the low density graphite is concentrated at the center and oxidized ...
21 85100585 Corrosion-resisting Al-alloy
A new Al-alloy is made by addition of 0.15-0.8% (wt.) rare earth elements (Ce, La, Y) to an Al-alloy which is composed of (in wt.%) Mg 0.5-5.5, Mn 0.2-0.8, Bi or Sb 0.05-0.35, Fe is not ...
22 85100659 Fe-Cr-Al alloy pressure release bolt
The pressure release bolt of this invention is made of traditional electrothermal material, Fe-Cr-Al alloy, effectively utilizing mechanical strength and recrystal embrittlement of the a...
23 85100658 Diffusion-type Pt, Pt10Rh wires and Pt10Rh-Pt thermocouples
This invention provides two kinds of Pt wires in which trace Y or Y,Au is added respectively, and one kind of Pt10Rh wire in which trace Y is added as well as two kinds of diffusion-type...
24 85100652 Si-Mn-V wear-resisting alloy rail
Rail is the main component for railway upper construction. Using Si, Mn, V which have low cost, abundant resourse as adding elements, and through compounding rationally, the Si-Mn-V allo...
25 85100664 Method to decrease heating temperature of common grain-oriented electrical stee...
This invention concerns a method to decrease the heating temperature of 3% Si common grain-oriented electricl steel slab. The crystal boundary enriching elements Sb or Sn are added as in...
26 85100663 Soldering nickel-base alloys used for nuclear industry
The invention is particularly used for the braze welding of a thin wall member of metal materiais, for example stain;ess steel, corrosion-rewsistant alloy and heat-resistant alloy in an ...
27 85100662 Water hardening spring steel 35 Si Mn B and process for its manufacture
The process of this invention is used primarily for manafacture of plate spring for vehicles and other machinery springs. Through controlling the contents of elements C, Si, Mn and B, th...
28 85100575 Method for a kind of ceramic alulnrinium alloy
This alloy is a kind of metal-bare particle complex material. In the aluminium-bare complex material invenled before, solid particles A1203 sic zircon Illite etc, are added, In this inve...
29 85100666 Low iron loss cold-rolled orientation silicon steel plate (containing 4 Percent...
Besides adjusting the amount of main components such as C, Mn, and S etc., of a 4% Si steel, ALN is added as an auxiliary inhibitor. By controlling hot-rolling temp., improving heat-trea...
30 85100665 New low energy-comsumption ferrosilicon process
According to the principle that CaCL2 can drop m.pt. of SiO2, raise its activity and therefore promote its reduction, CaCL2 is added into the feed of ferrosilicon process, the amount is ...
31 85100776 Semi-continuous casting nodular cast iron pipe mfg. method
In this invention, the blast furnace melt iron is added by melt steel to regulate the chemical compsn., over heated by electrical furnace and after the incubation spheroidizing, is caste...
32 85100775 Mn-Si-B spring steel for automobile spring bottom plate
This steel is to manufacture thick spring leaf. The thickuess of the steel leaf may be up to 16 mm if annealed in oil, and 30 mm if water-annealed. Bottom plate spring set of automobile ...
33 85100773 High quality positive frequence temp. coefft constant elastic alloy
This alloy is a modification of 3J61 alloy by adjusting the composition as Ni 41-42.5%, Cr 3.5-4.5%, Mo 0.8-1.2%, and controlling the rf positive value by separating phase. In the workin...
34 85100068 Nodulizer for heavy section nodular graphite cast iron and method for its produ...
The main chemical composition of the present nodulizer is: Mg 5~10%, Re O~2%, Si O~10% and the balance being Fe. This nodulizer is made by mechanical mixing and cold-pressing.On use of t...
35 85100822 Die steel for hot working
A hot working die steel comprises, by weight,0.30-0.50%C,0.20-1.00%Si,0.20-1.00%Mn, 2.00-4.00%Cr, 0.80-2.00%V,1.50-3.50Mo,in addifion, one or more of <2.00%Ni,<0.30%Nb,<4.00%Co and <0.01...
36 85100821 Precipitation hardening type die steel for hot working with superior machinabil...
The new steel has a composition comprises by weight,0.10-0.30%C,0.30-3.00%Si,0.50-1.00%Mn,1.00-4.00%Cr,<4.00%Mo,0.20-1.20%V,0.50-2.00%Ni,as well as proper amount of Nb,Zr and Ca.The stee...
37 85101890 Process for producing worm-shape graphitic cast iron
It uses GGG melting as original melting. The production can be exactly repetition in a converter, the contents of S and O are constant. According to the results from datum treatment of G...
38 85101583 Process for preparing alloyed negative electrodes and device utilizing these el...
The disclosure describes a method for the preparation of metallic alloys containing an alkali or alkali-earth metal, such as lithium, and a host metal, such as aluminum. Initially, an ac...
39 85100860 Method for mfg. ferro-rareearthmetal-boron system permanent magnetic material b...
The present invention relates to a permanent magnet manufacture process. Its characteristic is that the rare earth oxide is reduced directly by Ca (or Ca-hydride), the resulted rare eart...
40 85102040 Low-alloy high-speed steel
The steel of this invention consists of C, W, Mo, Cr, V, Al, and N, the balance being Fe and trace impurities Si, P, S. It requires less W, Mo, Cr, in comparing to the usual P18 and M2 h...
41 85102029 Improved forgeability in nickel superalloys
An extremely overaged microstructure is developed by solutionizing the material and slow cooling in the vicinity of the solvus temp. to cause a precipitation of extremely coarse gamma pr...
42 85102456 High strength casting aluminium alloy of medium Si, Cu, Mg and Te series
This invention concerns the high strength casting aluminium alloys developed on the basis of ZL111 alloy by means of the technique of compound crystallite alloying mainly through additio...
43 85102174 Low temperature structural carbon steel
This kind of steel is made by adding a small qantity of gallium to high-quality carbon steel while pouring after melting. When the carbon content is low, it is suitable for making contai...
44 85102028 Process for production of valve seat rings
It is by powder metallurgy in which a powder mixt. contg. by weight,0.8~1.5% of graphite, 1.0~4% of lead, 0.5~5% of nickel, 1.2~1.8% of molybdenum, 9.6~14.4% of cobalt, remainder iron, i...
45 85102080 Hard alloy base material used for coating tool Bits
The hard alloy base material of this invention contains Tic, Tac, Nac, Wc, Co and trace Cr3C2, its strength being over 190kg/mm2 and hardness HRA91. The life of the cutting tool made of ...
46 85102204 Low Si, Mg and Te series high strenth alloy cast aluminium
The present invention is based on ZL101 aluminum alloy and utilizes technical measure of Te or Te and Sb or Te and Sr minialloyage or cpd. minialloyage. It has elevated casting property,...
47 85102203 Si, Cu and Te series high plasticity alloy cast aluminum
The alloy of this invent contains 7%-9% Si, 0.5%-2.0% Cu, and was added 0.001-0.200% Te or 0.001-0.200% Te and 0.1-0.2% Sb acting as compound minialloyage. The Al alloy of this invent ma...
48 85102202 Medium S,-Mg-Te high strength casting aluminum alloy
This alloy is an improvement of aluminum alloy ZL104 of China, by using the technical method of micro-alloying or composite micro-alloying of adding trace Te or Te and Sb or Te and Sr. I...
49 85102201 Hypoeutectic Si-Cu-Zn-Te aluminum ally for diecasting
This invention makes an improvement of the American SC84A-B aluminum diecasting alloy by the technology of micro-alloying or composite micco-alloying. The alloy contains 7.5-9.5% Si 3.0~...
50 85102207 Method of adding alloy element Te to alloy cast aluminum
The present invention includes defailed technology of method. procedures, temp and retention time, adding amount etc., whether using industrial grade Te or Te contg, intermediate alloy. ...
51 85102206 High plasticity casting aluminium alloy of Si-Zn-Te system
In order to obtain the effect of microalloy or complex microalloy, 0.001%-0.200%Te, or 0.001%-0.200% Te and 0.1%-0.2% Sb are added in process of casting the alloy of Al-Si system. This a...
52 85102205 Cocrystalline Si.Cu.Zn.Te series die-casting alloy aluminum
This invention is developed utilizing minialloyage and cpd. minialloyage technology based on SC114A die-casting alloy Al. The significant improvement of this alloy than SC114A are: (1) c...
53 85102241 Releasing tin metal in high lead low tin alloy and apparatus therefor
In the electrical heating, continuous crystallizing furnace through the temp. gradient within furnace formed from the electrical heating and the slope of the crystallizing furnace instal...
54 85102237 Low-Si-Cn-Mg Dy-System high strength aluminum cast alloy
A high strength aluminum cast alloy of A1-Si-Cu-Mg hypoeutectic system is claimed, which is composed of Si 4.5-5.5, Cu 1.0-1.5, Mg 0.4-0.6 (in pts.wt), some amount of micro-alloying elem...
55 85102230 Cocrystalline Si, Mg, Te series high strength alloy cast aluminum
This alloy is based on alloy ZL102 and utilizes technical measure of adding Te or Te and Sb or Te and Sr. Its main feature is good for casting, easy to smelt and cast, and eliminates gas...
56 85100579 Manufacture of graphite-Al alloy by intermediate allayage
This invention uses intermediate alloyage of Al-graphite to mfr. graphite-Al alloy. The technology is simple. Graphite-Al alloy produced by this technology can be smelted repeatedly, the...
57 85102364 Si-Mn-Te series aluminum casting alloy
Aluminum alloy containing 5.5-9.5% silicon, 0.2-0.8% magnesium, 0.001-0.2% tellurium or 0.001-0.2% tellurium and 0.1-0.2% antinomy is fabrieated by compounded micro-allogage. These Al-al...
58 85102362 Method of adjusting graphite form of creeping nodular cast iron by sulfur contg...
Adding proper amount of sulfur contg, material to melten iron, which were over-creepaged (i.e. the content of nodular graphite exceeds required range) can reduce the content of nodular g...
59 85102452 Tin-zine copper protective refinery agent of fusion and using method
This flux is composed of cupric oxide, column boromagnesite and limestone. When used in smelting bronze it can prevent the alloy from being oxidized and adsorbing hydrogen; besides, it s...
60 85102397 Fe-Ni-Mo alloy with high strength, weak magnetism and constant elasticity
This invention relates to a alloy having the multiple properties of high strength, weak magnetism, constant elastic and shear moduli, which no alloy has so far for static applications. T...
61 85102865 Roller steel with high chronium and roller
The invention is used to cast compound roller by centrifuging. The steel contains Mo, W, Ni, Co, Nb, V and Ti besides high-carbon and high chromium, which makes the steel have the propor...
62 85100113 Rare earth gray cast-iron products from blast furnace molten iron
The object of this invention is to increace the working life of ingot mould of gray cast-iron made from blast furnace molten iron and other cast iron products. The main point of the inve...
63 85102455 Pressure die casting aluminum alloy of eutectic silicon, copper and tellurium s...
By means of adding the tellurium and titanium simitaneously, the casting properties of the alloy of the present invention is improved the gas absorbing tendency is reduced, its structure...
64 85100484 W-Ce electrode material, preparation technology and uses thereof
This material is non-radioactive, high melting or non-autoconsuming metallic electrode material, applicable in inert gas protection arc welding, plasmatron welding, electric cutting meta...
65 85102454 Aluminium alloy for casting piston of eatectic silicon, copper, magnesium, mang...
This invention concerns an aluminum alloy obtained on the basis of ZL 108 alloy by tellurium crystallite alloying, or by telurium and antimony compound crystallite alloying, or by tellur...
66 85103106 Niobium slag alloying additive and its use in steel smelting
The invention concerns a niobium slag alloy additive, consists of niobium slag of (Nb2O5) is greater than 4%, (Nb/P) is greater than 5 extracted from molten iron, and reducing agents suc...
67 85102110 Nodular cast iron with austenite and bainite and its mfr. process
Nodular cast iron, which contains Ni 1-2%, Mn 0.3-0.8%, Mo 0.3-0.8%, Cu 1-1.5%, rare earth elements 0.001-0.03%, and Si, Mg, S, P, C, etc. in regular amount, is heated up to austenitic t...
68 85102472 Heat resisting ferro alloy which stands high temp.
This alloy is made according to the recipe of high chromium-high carbon-nitrogen containing ferro-alloy and, in cast state, has a metallographic microstructure of austenite matrix plus c...
69 85103476 Steel for grade D link chain
The composition of the steel is (wt%): C 0.21-0.27, Si 0.65-0.95, Mn 1.10-1.40, Ni 0.80-1.10, Mo 0.10-0.20, Al 0.02-0.05, S,P<=0.035, Cr<=0.35, Cu<=0.25. This kind of grade D link chain ...
70 85103503 Recipe for fusing cast alloy used in dentistry
The composition by weight of the alloy of this invention is: 15-18% nickel, 30-35% zinc, 3.5-5% indium, less than 0.6% silicon, less than 0.3% aluminium, and the ballance being copper. T...
71 85103868 Ferrous alloy
The ferroalloy presented in this invention is a material for lining of eylinders of plastics extruders, plastics injecting machines, and other bimetal barrels. Composition by weight of t...
72 85103823 Diecasting Tin-bronze and method of its melting
This invention comprises, adjusting composition of the alloy, controlling Sn equivalent and Pb absalute content. The alloy contains 4-5%Sn,3-5%Zn 05-1%Pb, 89-92.5% Cu. It is melted by th...
73 85103914 Steel ingot mould of vanadium-titanium cast iron
A kind of low-alloy vanadium-titanium cast iron used for making steel ingot mould is presented in this invention. Its composition by wight is: 3.5-4.0%C, 1.5-2.0%Si, 0.3-0.4%Mn, no more ...
74 85103501 Conductor material of semiconductor apparatus
The present relates to a conductor material used for semiconductor apparatus. Constitutional matter by weight of which includs: Ni from 0.4 to 4.0%, Si from 0.1 to 1.0%, Zn from 0.05 to ...
75 85103958 Smelting of rare earth intermediate alloy by electric arc furnace from rare ear...
The present invention uses rare earth fine slag to manufacture high rare earth, low titanium alloy (Re 30-46%, Ti less than 1%) by silicon fusion in electric arc furnace or low titanium ...
76 85105072 Zi-Al-Co-Mn alloy for bearing
This alloy is mainly used for producing low speed and heavy duty sleeves and segments to match with hard axles. It is also suitable for making easily abraded inserts to substitute for br...
77 85103662 Method for production of gas turbine blade having hybrid structure
In the mfg. process for the gas turbine blade with orientation freezing, the cast mould filled with molten metal is slowly cooled down by controlled mode and the metal will be freezed in...
78 85104196 P-added ferritic stainless steel having excellent formability and secondary wor...
Ferritic stainless steel is basically made by the following elements weight percentages, Carbon: from 0.0050 to 0.050, Chromium: from 10.00 to 18.00, Silicon: maximum 0.50, Manganese: ma...
79 85104212 Electroysis of halide-containing solutions with platinum based amorphous metal ...
A process for the generation of halogens from halide-containing solutions includes the step of conducting electrolysis of the solutions in an electrolytic cell having a platinum based amo...
80 85104175 Improved electrolytic processes employing platinum based amorphous metal alloy ...
Improved electrolytic processes employing oxygen anodes. The improvement comprises the step of conducting a electrolysis process in an electrolytic cell having a platinum based amorphous ...
81 85103631 No.O9-Mn-Nb low alloy steel for ship building
The ship hull made of ordinary steel plate is always corroded seriously after a few years of navigation, it has to be dry-docked for removing rust and barnacle, thus shortens the time of...
82 85104670 Material sheet for metal sintered body and method for manufacturing the same an...
A method for manufacturing a metal sintered body disclosed herein is characterized by the use of steps of: mixing 70-90% by weight of self-soluble alloy powder and 10-30% by wight of met...
83 85104148 Fe-Cr alloy for axis of wave wheel in washing machine
This alloy possesses superior corrosion-resistance to tap water, base or salt containing water. It is a material of high mechanical strength and ductility appropriate hardness, and desir...
84 85104348 2-17 type rare-earth permament magnet having temp. compensation
The present magnet consists: in that the alloy constituent, part of samarium is substituted by gadolinium, Sm/Gd equal to 4/1-3/2; and others, by weight the percentages are Co 45-47%, Cu...
85 85104938 Co-containing austenitic stainless steel with high cavitation erosion resistan...
It is soft and has high caritation erosion resistance, so that it is suitable specially for mfg. and mending parts of hydro-machines. The composition of this alloy is (by wt.) Co 8-30%, ...
86 85104747 High efficiency silicon steel sheet for electrical machinery
It is applied to various kinds of electrostatic induction equipments as well as large size electrical machinery, to save energy, raise electrical machinery efficiency and cause a decreas...
87 85104791 High speed tool steel and its process of heat treatment
In the invention is disclosed a method of smelting the steel, esp. that containing Al and N, and the technics of heat treatment process. The composition of steel is characterized as, C 0...
88 85105171 Microcrystalline copper based soldering alloy sheets
This kind of soldering sheets is made by liquid state quenching technique (single roll or double roll method), and can be made in to wires or sheets. The characteristics of such silver f...
89 85105271 Nickel-base alloy
The presentinvention presents a nickle base alloy of simple composition with a rational proportion of ingredients. The alloy thus made can be used to mfr. centrifuge apparatus which poss...
90 85105067 Casting ladle for removing metal magnesium by chlorination treatment of alloy Al
This invention introduces a casting ladle for chlorination treatment of molten metal aluminum co-currently. The casting ladle is divided into feed chamber and treatment chamber by vertic...
91 85105281 Rare earth-Mn-Si-Mo-Ti-B-abrasion resistant cast steel and process of its produ...
Total amount of rare earth elements in the steel is less than 0.05-0.10%. Content of poisonous sulphur and phosphorus element should be less than 0.035%, and that of residual aluminum 0....
92 85105274 Rare earth-Cr-Mn-Si-Mo-abrasion resistant cast steel and its process of product...
Total content of rare earth elements in the steel is less than 0.05-0.10%. The content of poisonous sulphur and phosphorus elements should be no more than 0.035% and that of residual alu...
93 85105273 Rare earth-Cr-Mn-Si-Mo-Ni-B-abrasion resistant cast steel and process of its pr...
The total amount of rare earth elements in this steel lies between 0.05-0.09% the content of poisonous sulfur and phosphorus elements should be no more than 0.35%, and content of residua...
94 85105656 Rich-phosphorus abrasion-resistant nodular cast iron and its process
There are some restrictions to the application of the natural rich-phosphorus pig iron because of its high phosphorus content. In this invention, raw materials are pig iron which contain...
95 85105573 Fe-Mn-Al-Cr stainless steel
A new stainless steel, its anti-corrosion, anti-oxidation propertis and mechanical strength are excellent, its anti-corrosion, anti-oxidation properties in sea water are better than thos...
96 85106278 Cold-rolled steel sheets and a method of manufacturing the same
A cold-rolled steel sheet for deep drawing having an improved bake hardenability, which comprises 0.005 to 0.015% by weight of C, not more than 1.0% by weight of Si, not more than 1.0% by...
97 85105282 Rare earth-Cr-Mn-Si-Mo-Ti-B abrasion resistant cast steel and process of its pr...
The total amount of rare earth elements in the title product is no more than 0.04-0.08%, the content of poisonous sulphur and phosphorus elements should be less than 0.035%, and residual...
98 85105932 Chromioum alloy wear-resistant material for grinding balls
On the promise of ensuring the formation of carbides in the steel, the carbon content of the steel is decreased, thus the contents of Cr and Mo are also decreased. In the same time the c...
99 85105652 Material with high-wearing feature
An alloy characterized by its highly abrasive resistant qualities which render it particularly suitable for use as the material from which to fabricate the external surface of a grinding,...
100 85106015 Mixed rare earth of lanthanum and cerium
The prior mixed rare earth product contains predominantly lanthanum, cerium, praseidymium and neodymium,so that not only the resource of Pr and Nd goes to waste, but the effect for appli...
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