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利用铜模铸造法制备Zr50Cu50二元非晶合金,并研究铜模温度、保护气体对Zr50Cu50合金非晶形成的影响.熔液的冷却速率是由铜模温度以及保护气性质共同决定的,相比于氩、氦作为保护性气体不但有效提高熔液的冷却速率,而且在超低温制备环境下仍能保持样品表面光滑.在此研究基础上,利用氦作为保护气,在液氮作为铜模冷却介质的超低温环境下(79 K),制备出表面光滑、直径为2.5 mm的Zr50Cu50大块非晶合金,该尺寸超越了之前所报道的Zr50Cu50非晶合金的最大尺寸(2 mm).

参考文献

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