本文利用铜模吸铸法成功制备了直径达5mm的新型大块非晶合金Cu43Zr43Al7Pd7。利用XRD、DSC、DTA研究了非晶合金的非晶形成能力(GFA)和热稳定性。结果表明，表征非晶形成能力的参数Trg和γ分别为0.607和0.417，过冷液相区Tx达75k。采用单轴压缩实验并结合SEM研究了该合金的力学性能，材料压缩断裂应变量和断裂强度分别达到4.9%和1877MPa。利用动电位极化研究了该非晶合金在1mol/LH2SO4和3%NaCl溶液中的电化学腐蚀行为，结果表明，非晶合金在这两种腐蚀介质中均存在自钝化现象，并形成较宽的稳定钝化区，钝化区电流密度在10-6-10-5A/cm2间，远低于Cr18-Ni8不锈钢，表现出良好的耐蚀性能。
Cu43Zr43Al7Pd7 bulk metallic glass (BMG) with a diameter up to 5mm was successfully prepared by copper mold casting. The glass-forming ability (GFA) and thermal stability of the BMG obtained were investigated by means of XRD, DSC and DTA. It is shown that Cu43Zr43Al7Pd7 system exhibited an excellent glass forming ability as indicated by high values of Trg (=0.607) and γ (=0.417) as well as supercooled liquid region(Tx= 75K), respectively. Uniaxial compressive test revealed that the BMG obtained possesses pretty good mechanical properties with a fracture strength of 1877 MPa and an overall strain of 4.9%, respectively. Electrochemical measurements were carried out in 1mol/LH2SO4 and 3%NaCl aqueous solutions by potentiadynamic polarization at room temperature. It is shown that Cu43Zr43Al7Pd7 BMG exhibited spontaneous passivation in both solutions with wide passive regions. The passive current densities are about 10-6～10-5 A/cm2, which are much lower than that of Cr18-Ni8 stainless steel, implying a good corrosion resistance.
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