| 摘要 |
Substrates having patterns of refractory metals, such as tungsten, molybdenum or molybdenum-manganese, are clad with gold which is congruent to the refractory metal pattern by screen-printing a gold ink essentially free from other inorganic constituents over the refractory metal pattern and then firing to a temperature above the melting point of gold. Exactly congruent gold layers having a smooth fire-polished surface are thus obtained. The method is equally applicable to terminals which are readily accessible to barrel plating and to terminals which are inaccessible to normal barrel plating procedures.
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