The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 14, 2006
Filed:
Jul. 02, 2003
Chung-hong Lau, Tainan, TW;
Chen-hsin Lai, Tainan, TW;
Chih-hsing Tsao, Tainan, TW;
Tsang-tien Wang, Tainan, TW;
Tzyy-bin Werng, Tainan, TW;
Chung-Hong Lau, Tainan, TW;
Chen-Hsin Lai, Tainan, TW;
Chih-Hsing Tsao, Tainan, TW;
Tsang-Tien Wang, Tainan, TW;
Tzyy-Bin Werng, Tainan, TW;
Taiwan Salt Company, Tainan, TW;
Abstract
A method and an apparatus for preparing aluminum nitride are disclosed. The method for preparing aluminum nitride is first to prepare a reactant-containing body filled with admixtures of aluminum powder, a diluent (aluminum nitride powder) and nitrogen-containing solid compound, the reactant-containing body having an ignition portion, a propagating portion, a sustaining portion and an ending portion. Thereafter, the reactant-containing body is placed on a base having through holes in a reaction chamber, and preheated to a predetermined temperature for a predetermined period of time. Then, a re-circulating nitrogen gas is introduced through the reactant-containing body, and coolant is re-circulated between an inner wall and an outer wall of the reaction chamber, and then the ignition portion is ignited to perform a combustion synthesis process, thereby preparing the aluminum nitride, thereby preparing the aluminum nitride. The apparatus for preparing aluminum nitride comprises a reaction chamber having an inner wall and an outer wall, wherein a coolant is re-circulated between the inner wall and the outer wall; a preheating device; a nitrogen re-circulation system; and an igniting device.