Title: Process of preparing black cubic zir onium oxide precious stone
Application Number: 89102170 Application Date: 1989.04.15
Publication Number: 1036234 Publication Date: 1989.10.11
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C01G25/02,C30B29/16
Applicant(s) Name: Research Inst of Artificial Crystals, State Bureau Address:
Inventor(s) Name: Fu Lintang, Liu Weiguo
Attorney & Agent: WEI GYONGJIN
Abstract:
     The present invention discloses a process for the prepn. of black cubic zirconium oxide crystal through thermal treating cubic zir conium oxide under vuccum or reducing or inert atmosphere. The prod. of the inentioned process can not be otherwise obtd. by means of doping process.
Time: 5