TZM alloy,a kind of high temperature Mo-based alloy with high melting-point,excellent performan-ces in corrosion resistance and mechanical properties, is applied extensively in many fields. TZM alloy is usually pre-pared by arc melting technology or powder metallurgy. By solution strengthening, dispersion strengthening and de-formation strengthening, mechanical properties of TZM alloy are much more outstanding than that of pure Mo. Pro-tective coating formed on TZM alloy surface by pack cementation technique can provide adequate oxidation resistance at elevated temperature.%TZM合金是目前广泛应用的高温钼合金,具有熔点高、抗蚀性强、力学性能优异等诸多优点.制备TZM合金主要有电弧熔炼和粉末冶金2种方法.通过固溶强化、第二相强化和形变强化,TZM合金的室温塑性和高温强度均大大优于纯钼.采用包埋渗法在TZM合金表面涂覆一层保护性涂层,可有效改善TZM合金的抗高温氧化能力.
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