Title: Process for preparing neodymium-iron-boron permanent magnetic material surface gradient function coating layer
Application Number: 200610054440 Application Date: 2006.07.14
Publication Number: 1900361 Publication Date: 2007.01.24
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C23C28/04;C23C20/08;B05C3/02;B05D3/00;C04B35/624;C25D3/02;C23C18/32
Applicant(s) Name: South China Univ. Address:
Inventor(s) Name: Li Qing;Wang Juping;Zhang Liang
Attorney & Agent: zhou shaogong
Abstract:
    A neodymium-iron-boron permanent magnetic materials surface gradient function coating preparation method overcomes current slug type neodymium iron boron surface processing method existent problem. Said method adopts new surface modification process means combined with tradition electroplating ( or chemical plating ) advantages and sol-gel technologic property, thereby avoiding single cladding material poor cladding material adhesion, less compactness, easy resulting slough, having pore and too thin single sol coating shortages. Said method forms tight sol coating on neodymium iron boron base material surface, to obtain oxide ceramics coating after sintering treatment, then cladding material on gel coating to form function gradient coating to take complete corrosion protection.
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