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Microstructure,mechanical and thermal properties of Ni-P(-SiC)coating on high volume fraction SiC_(p)/Al composite 被引量:1

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摘要 Ni-P(-SiC)composite coatings were successfully deposited on 70 vol%SiC_(p)/Al composite by electroless plating.The surface microstructures and the phase structures of the Ni-P(-SiC)coatings were examined and analyzed by scanning electron microscopy(SEM)and X-ray diffraction(XRD)before and after heat-treatment at200-400℃for 2 h.The thermal diffusivity of the deposited samples and the interface adhesion between the coating and the substrate were investigated.The experimental results show that SiC content in the coatings increases obviously and XRD peaks are enhanced with SiC content in the bath increasing from 3 to 9 g·L^(-1).After heat-treatment,the surface of the coating becomes smoother and no diffusion layer is produced at the interface.A new phase Ni3P forms in the coating during heat-treatment at 400℃.The critical load(L_(c))of Ni-P-SiC composite coating on SiC_(p)/Al composite reaches the maximum value of 84.9 N with SiC content of 3 g·L^(-1)after heat-treatment at 200℃and more or less decreases with the increase in SiC content and heat-treatment temperature.The thermal diffusivity of deposited samples gradually increases as the temperature increases;however,it reduces firstly and then climbs with the increase in SiC content.
出处 《Rare Metals》 SCIE EI CAS CSCD 2023年第2期705-712,共8页 稀有金属(英文版)
基金 financially supported by the National Natural Science Foundation of China(Nos.51572112,51172177) the Natural Science Foundation of Jiangsu Province(Nos.BK20151340) the Six Talent Peaks Project of Jiangsu Province(No.2014-XCL-002) the Postdoctoral Science Foundation of China(No.2014M551512) the Innovation/Entrepreneurship Program of Jiangsu Province(Nos.[2013]477,[2015]26)。
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