发明授权
US07339127B2 Contact piece made of tungsten provided with a corrosion-resistant layer made of a base metal 失效
由钨制成的接触件具有由贱金属制成的耐腐蚀层

Contact piece made of tungsten provided with a corrosion-resistant layer made of a base metal
摘要:
A contact piece is formed by a tungsten overlay soldered onto a support, wherein at least portions of the solder layer and optionally of the support are covered by a layer of a less noble metal than tungsten. The corrosion resistance of the tungsten overlay is considerably improved.
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