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:
Dec. 15, 1998
Filed:
Jun. 20, 1996
Jow-Lay Huang, Tainan, TW;
Ming-Tung Lee, Tainan, TW;
National Science Council, Taipei, TW;
Abstract
A tube chemical vapor deposition method of preparing titanium carbide/silicon nitride (TiC/Si.sub.3 N.sub.4) composites. To prepare such composites, titanium carbide (TiC) is first coated with a homogeneous layer of titanium nitride (Ti.sub.3 N.sub.4). A gas mixture of titanium chloride (TiCl.sub.4), nitrogen (N.sub.2), hydrogen (H.sub.2) with an appropriate ratio is introduced into a reaction chamber where the tube chemical vapor deposition takes place. The temperature of the reaction for the sintering process is between 900.degree. C. to 1200.degree. C., under a total pressure of 1 atm. While maintaining a constant temperature for 1 to 2 hours, deposition of titanium nitride (Ti.sub.3 N.sub.4) onto titanium carbide (TiC) powder takes place. The adoption of the simple tube chemical vapor deposition technique for the present invention not only enables a mass production of homogeneously coated titanium carbide (TiC) particulates, but also further enhances the hardness and toughness as well as other mechanical properties of silicon based composites, such as a titanium carbide/silicon nitride (TiC/Si.sub.3 N.sub.4) composite.