Title: Method of instantaneous controlling laser power for preparing ceramics in base of Ta2O5 with high dielectric constant
Application Number: 03148245 Application Date: 2003.07.04
Publication Number: 1480427 Publication Date: 2004.03.10
Approval Pub. Date: Granted Pub. Date: 2005.05.04
International Classifi-cation: C04B35/495,C04B35/622,C04B35/64,C04B35/46,H01B3/12
Applicant(s) Name: Beijing Technical Univ. Address: 100022
Inventor(s) Name: Jiang Yijian
Attorney & Agent: zhang hui
Abstract:
     A process for preparing Ta2O5-base ceramics with high dielectric constant by instaneous regulation of laser power includes using high-power laser to irradiate the raw Ta2O5-base ceramics at 190-350 W/sq.cm of power density for 30-185 s in order to preheat it, instantaneously regulating the laser powre density to 850-1405 W/sq.cm, sintering it for 25-95s, and cooling. Its advantages are high dielectric constant, short period, easy control, and high purity of product.
Time: 8