Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-31 Cooperative journals: 《中国腐蚀与防护学报》
Abstract: The interface character and corrosion resistance of SiCp/Al composites prepared with electroless nickel plated SiC 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 SiC particles and aluminum matrix, increases the interface bonding strength and reduces the formation of Al4C3, the later is a detrimental product resulted by the interfacial reaction of SiC and the matrix. SiCp/Al composites made of non- modified SiC particles suffered from local corrosion during immersion in 3.5%NaCl solution for the first 2000 s, and then turn to uniform corrosion. However, SiCp/Al composites made of Ni-plated SiC particles suffered from local corrosion during the whole immersion test. In addition, the Ni-plated SiCp/Al composites exhibited much positive free corrosion potential and higher noise resistance, therefore, implying a better corrosion resistance.
Subjects: Materials Science >> Materials Science (General) submitted time 2023-03-31 Cooperative journals: 《中国腐蚀与防护学报》
Abstract: The current status of study on cavitation corrosion of metal materials was comprehensively reviewed with emphasis on experimental methods and the cavitation corrosion behavior of several typical metals (iron, copper, stainless steel, titanium, shape memory alloy). The effects of mechanical properties, chemical composition, microstructure, and surface morphology of materials as well as the parameters of external environment on the cavitation corrosion behavior of metal materials were introduced. Moreover, the directions for further study on cavitation corrosion of metallic materials are also suggested.