Generally refers to a melting point college than 1650 ° C and accept a assertive assets of metal (tungsten, tantalum, molybdenum, niobium, hafnium, chromium, vanadium, zirconium and titanium), and aswell there will be a college melting point than the the zirconium melting point (1852 ° C) a metal accepted as a adverse metal . These metals as the base, add the added elements basic the admixture is referred to as adverse metal alloy. These metals as the base, add the added elements basic the admixture is referred to as adverse metal alloy. Manufacturing aggressive 1093 ℃ (2000 ° F) temperatures aloft structural abstracts acclimated in the adverse metal is tungsten, molybdenum, tantalum and niobium. Molybdenum admixture adverse metal admixture is the ancient acclimated as the structural actual of the alloy, the Mo-0.5Ti-0.1Zr-0.02C admixture accepting acceptable top temperature backbone and low temperature ductility and broadly acclimated in industry.
The a lot of important advantage of the refractory metal composites accept acceptable top temperature strength, acceptable bane attrition to the aqueous acrid metal and the vapor. The capital disadvantage is the top temperature blaze resistance. Tungsten, molybdenum artificial - breakable alteration temperature is higher, artificial alive at allowance temperature is difficult; niobium and tantalum, workability, weldability, low temperature ductility and blaze attrition of molybdenum and tungsten are superior.
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