发明名称 |
Purification of boron nitride |
摘要 |
Boron nitride (BN) is freed of boric oxide without increasing its electroconductivity by heating the BN under vacuum to evaporate the boric oxide and chlorinating the BN at a temperature sufficient to remove any elemental boron as boron trichloride.
|
申请公布号 |
US4089931(A) |
申请公布日期 |
1978.05.16 |
申请号 |
US19770817926 |
申请日期 |
1977.07.22 |
申请人 |
GENERAL MOTORS CORPORATION |
发明人 |
SHARMA, RAM A.;BRADLEY, THOMPSON G. |
分类号 |
C01B21/064;H01M2/16;(IPC1-7):C01B21/06 |
主分类号 |
C01B21/064 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|