发明名称 |
High density sintered prods. made from silver powders - esp. electric contacts, are subjected to multistep sintering at progressively increasing temps. to obtain high density |
摘要 |
<p>The powder consists mainly or entirely of silver, and is pressed into a green blank which is sintered in nitrogen in at least two successive steps with increasing temps. In each step, sintering occurs at a specific temp. for a specific time. The result is that prods. with a density of min. 90% of the theoretical density are obtd., because shrinkage occurs during the final sintering stage. The initial powders are esp. those employed in mfg. sintered electric contacts, e.g. Ag; Ag-CdO;, Ag-Ni; or Ag-carbon.</p> |
申请公布号 |
DE3006270(A1) |
申请公布日期 |
1981.08.27 |
申请号 |
DE19803006270 |
申请日期 |
1980.02.20 |
申请人 |
SIEMENS AG |
发明人 |
SCHREINER,PROF.DR.TECHN.HABIL,HORST;TUSCHE,REINHARD |
分类号 |
B22F3/10;C22C1/04;(IPC1-7):22F3/16 |
主分类号 |
B22F3/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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