发明名称 |
Compensating element for stresses of thermal or mechanical orgin, especially for printed circuits, and process for making such an element employed in a printed circuit |
摘要 |
A printed circuit comprising an electrically insulating substrate and an electrically conductive layer on the substrate, this layer being a pseudo-elastic or elastically deformable alloy that undergoes significant deformations in a reversible manner and is a copper alloy containing at least 50% by weight copper in the form of large-grained polycrystals that undergo martensitic transformation. Preferably, the layer contains 60-80% by weight of copper, the large-grained polycrystals having a grain size of at least about 3 mm. The martensitic transformation takes place within the temperature range -55 DEG C. to +125 DEG C., and the layer has a thickness between 30 mu and 200 mu , preferably about 100 mu .
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申请公布号 |
US4857387(A) |
申请公布日期 |
1989.08.15 |
申请号 |
US19870113420 |
申请日期 |
1987.10.27 |
申请人 |
CIMULEC, S.A. |
发明人 |
EBERHARDT, ANDRE;DOMINIAK, SERGE;BERVEILLER, MARCEL;LUCAS, JEAN P.;GUYON, ROBERT P. Y. |
分类号 |
C03C27/04;C04B37/02;C22F1/00;H01L23/373;H05K1/02;H05K1/09 |
主分类号 |
C03C27/04 |
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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