摘要
采用激光熔覆方法制备了不同Co含量的Al2CrFeNiCoxCuTi(x=0.5、1.0、1.5、2.0)多主元高熵合金,测试了其在1mol/L的NaCl溶液和0.5mol/L的H2SO4溶液中的电化学性能,绘制了相应的极化曲线。结果表明,多主元高熵合金Al2CrFeNiCoxCuTi(x=0.5、1.0、1.5、2.0)的晶体组织为柱状晶和等轴晶,相结构是面心立方(fcc)和体心立方(bcc);随着Co含量的增加,合金中的面心立方结构相逐渐增多,进而增加了合金的晶间腐蚀作用,降低了合金的耐腐蚀性能。
The multi element high entropy alloys Al2 CrFeNiCox CuTi （x = 0. 5,1. 0,1. 5,2. 0） with different Co contents were prepared using laser cladding method. Electrochemical performances of the alloys were tested in 1 mol/L NaC1 solution and 0.5 mol/L H2SO4 solution,and the corresponding polarization curves were drawn. The results show that the high entropy alloys are columnar and equiaxed crystals, with the phase structure of fcc and hcc. The phase of fcc increases gradually with the increase of Co content in the alloys, enhancing intergranular corrosion and then reducing corrosion resistance of the alloys.
出处
《稀有金属与硬质合金》
CAS
CSCD
北大核心
2013年第4期38-41,共4页
Rare Metals and Cemented Carbides
