| 发明名称 |
Method of producing an insulating material for coating cathode heater elements |
| 摘要 |
A method of producing an aluminum oxide and tungstate powder for insulating cathode heaters includes mixing a finely divided aluminum oxide powder with ammonium tungstate, rinsing out excess ammonium tungstate, drying the mixture and heating in a nitrogen-hydrogen atmosphere to about 700 DEG C.
|
| 申请公布号 |
US3941707(A) |
申请公布日期 |
1976.03.02 |
| 申请号 |
US19730418642 |
申请日期 |
1973.11.23 |
| 申请人 |
INTERNATIONAL STANDARD ELECTRIC CORPORATION |
发明人 |
WEISS, EBERHARD |
| 分类号 |
H05B3/10;H01B3/00;H01J9/08;(IPC1-7):C01F7/02;C01G41/00;C04B43/00 |
主分类号 |
H05B3/10 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
