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:
Aug. 10, 2010
Filed:
Nov. 19, 2007
Jae Hyeok Shim, Seoul, KR;
Ji Woo Kim, Suwon, KR;
Young Whan Cho, Seoul, KR;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
Disclosed herein is a method of producing an ultrafine crystalline TiN/TiBcomposite cermet. In the method, titanium nitride (TiN)/titanium boride (TiB)/stainless steel composite nanopowder is produced through a reaction milling process using titanium (Ti), boron nitride (BN), and stainless steel powders as raw material powders, and the resulting composite nanopowder is liquid-phase sintered. The method comprises a first step of mixing titanium powder and boron nitride powder at a molar ratio of 3:2, a second step of mixing 5-60 wt % stainless steel powder and the powder mixture, a third step of feeding the powder mixture along with a ball having a predetermined diameter into a jar and conducting a high energy ball milling process to produce titanium nitride/titanium boride/stainless steel composite nanopowder, and a fourth step of shaping and sintering the resulting composite nanopowder.