中文摘要：

对SiC_p表面化学镀镍后制备的铝基复合材料（SiC_p-Ni/Al）界面及耐蚀性差异进行研究。采用XRD,SEM及EDS观察SiC_p-Ni/Al与未镀镍SiC_p制备的Al基复合材料（SiC_p/Al）界面,通过极化曲线及电化学噪声测试其耐蚀性。结果表明,镀镍层改善了SiC_p与Al基体间的润湿性,提高了界面结合强度,减少了有害界面反应物A14C3的生成。SiC_p/Al在3.5%（质量分数）Na Cl溶液中浸泡2000 s前表现为局部腐蚀行为,之后转变为均匀腐蚀。而SiC_p-Ni/Al在整个浸泡过程表现为局部腐蚀,且其自腐蚀电位较高,噪声电阻较大,耐蚀性更好。

英文摘要：

The interface character and corrosion resistance of SiC_p/Al composites prepared with electroless nickel plated Si C particles were studied by means of XRD, SEM and EDS as well as polarization curve and electrochemical noise test. The results show that the nickel plating improves the wettability between Si C particles and aluminum matrix, increases the interface bonding strength and reduces the formation of Al_4C_3, the later is a detrimental product resulted by the interfacial reaction of Si C and the matrix. SiC_p/Al composites made of non- modified Si C particles suffered from local corrosion during immersion in 3.5% Na Cl solution for the first 2000 s, and then turn to uniform corrosion. However, SiC_p/Al composites made of Ni- plated Si C particles suffered from local corrosion during the whole immersion test. In addition, the Ni- plated SiC_p/Al composites exhibited much positive free corrosion potential and higher noise resistance, therefore, implying a better corrosion resistance.