【摘要】 采用铝片包裹和铝粉包埋铜粉压块的方法,通过熔渗制备铜铝合金,铝片包裹法在真空、空气及氩气气氛下进行实验,铝粉包埋法在氩气气氛下进行实验,温度为750℃,保温6h。结果表明,三种气氛下,铝片包裹熔渗的速度由快到慢依次为:真空、空气和氩气气氛。真空和空气气氛下采用铝片包裹熔渗法时,得到的铜铝合金随铜粉压块的致密度增大而偏向相图中的富Cu侧;在氩气气氛下,铝片包裹和铝粉包埋熔渗渗层厚度都随铜粉压块的致密度增大而减小。更多还原

【Abstract】 The copper-aluminum alloy was prepared by infiltration with the methods of copper powder compact wrapped by aluminum sheet and embed in aluminum powder.The experiments of infiltration with the wrapped method proceeded in vacuum,air and argon atmosphere,and the embed method proceeded in the argon atmosphere,the experimental temperature was 750℃,the holding time was 6 h.The results show that the decreasing sequence of infiltration velocity of the wrapped method in different atmosphere is vacuum,air and argon atmosphere.The copper-aluminum alloy prepared by wrapped method in vacuum and air atmosphere is more close to the copper in the phase diagrams with the increase of the compactof the copper powder.In argon atmosphere,the thickness of the inflitration of the wrapped and embeded method decreases both with the increase of the compact of the copper powder.更多还原