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美国Union Carbide公司于1972年发展了一种叫做Ucon的新型刀具材料,并在市场上出售。这是一种由50%铌、30%钛以及20%钨(按重量计)所组成的耐高温合金。这种材料在特殊的炉氛中进行高温氮
Union Carbide in the United States in 1972 developed a new tool material called Ucon, and on the market for sale. This is a refractory alloy consisting of 50% niobium, 30% titanium and 20% tungsten by weight. This material carries out high-temperature nitrogen in a special atmosphere