Invention Grant
- Patent Title: Process for producing rhombohedral system boron nitride
- Patent Title (中): 生产菱面体系氮化硼的方法
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Application No.: US356784Application Date: 1982-03-10
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Publication No.: US4419335APublication Date: 1983-12-06
- Inventor: Toshihiko Ishii , Tadao Sato
- Applicant: Toshihiko Ishii , Tadao Sato
- Applicant Address: JPX Ibaraki
- Assignee: National Institute for Researches in Inorganic Materials
- Current Assignee: National Institute for Researches in Inorganic Materials
- Current Assignee Address: JPX Ibaraki
- Priority: JPX56-171249 19811026
- Main IPC: C23C16/34
- IPC: C23C16/34 ; C01B21/064 ; C01B21/06
Abstract:
Rhombohedral system boron nitride is produced by heating a boron material selected from the group consisting of boron oxide, boric acid and an oxygen-containing boron compound capable of forming boron oxide when heated, at a temperature of from 1200.degree. to 2100.degree. C. to vaporize boron oxide and reacting the vaporized boron oxide with hydrogen cyanide or cyanogen gas.
Public/Granted literature
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