黃銅滲鋁的研究

Study of Aluminising on Brass

摘要: 采用粉末滲鍍法,研究了黃銅滲鋁工藝。獲得有效滲鋁的工藝條件是:滲鍍溫度600℃,滲鍍時間3h,滲劑組成是Al粉40%、NH₄Cl 2%和Al₂O₃粉58%。滲鋁后的黃銅耐蝕性提高1.8倍,硬度增加25.6%,滲層厚度為50μm。通過X射線衍射分析等得出,黃銅滲鋁層的結構由表面至基體是Cu_0.6108Al_0.3892→γ₂-Cu₉Al₄→α-CuZn(含Al)→α-CuZn。

Abstract: The technique of aluminising on brass by powder plating method has been studied.The optimum technological conditions obtained were:temperature 600℃,time 3h and the constitute of coating agent aluminium powder 40%,NH₄Cl 2% and alumina powder 58%.After aluminising,The corrosion resistance of brass increases 1.8 times,the hardness increases 25.6% and the coating thickness is 50μm.The structure of coating layer of aluminium on brass from surface to interior obtained by X-ray diffraction analysis was:Cu_0.6108Al_0.3892→γ₂-Cu₉Al₄→α-CuZn(Al)→α-CuZn.