| 摘要 |
PURPOSE:To provide the titled alloy which is relatively low in initial cost and has good workability and strength by consisting the same of a specific compsn. ratio of Ta, Mo and W. CONSTITUTION:A tungsten-base alloy for electronic apparatus consists of 0.5- 2wt% Ta, <40% Mo and the balance substantially W. Mo having smaller specific gravity is added to the alloy to make the initial cost thereof lower than the initial cost of the alloy made of W alone. The workability is better and the strength is higher than pure W. Such alloy is adequate and exhibits a target effect particularly as a supporting material for a halogen lamp. Ta among the effective components of the above-mentioned alloy acts as a getter and if the content thereof is low, the effect is not thoroughly attained and if the content is too much, the alloy is uneconomical and is undesirable in terms of workability and strength. Mo is added at <40% to improve economy, workability, strength, etc. and the proper content thereof is selected according to applications. The above-mentioned alloy is easily produceable by a powder metallurgical method.
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