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本文一共分析四种高融点金属之高温状况并预测其未来。 高融点金属和合金之所以获得发展,诚然灯泡和电子管工业起了相当大的促进作用,但主要还是由于满足喷气机,火箭或原子能发动机的要求。 很早就大量致力于发展和探索带有保护層的满意的钼合金。甚至对其它的高融点合金也大量地加以研究,但有价昂、用途不广、密度大以及不易加工等缺点。这些金属中某些比钼的强度高、某些的塑性更好、并且除錸以外,在高温时均更能抵抗氧化。
This paper analyzes a total of four kinds of high melting point of high temperature metal and predict its future. The reason why high melting point metals and alloys have been developed has certainly played a considerable role in the light bulb and tube industry, but mainly due to meeting the requirements of jet engines, rockets or atomic engines. Much has long been devoted to developing and exploring satisfactory molybdenum alloys with protective layers. Even other high melting point alloys are also studied in great quantities, but the price is expensive, not widely used, the density is not easy to process and other shortcomings. Some of these metals are stronger than molybdenum, some are more ductile, and are more resistant to oxidation at higher temperatures than rhenium.