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以相同的陶瓷骨料(由TiO2、Al2O3和Zn组成),在纯铜基材上分别制备热化学反应法陶瓷涂层和热化学反应陶瓷/渗铝复合涂层,通过X射线衍射和扫描电镜研究了2种涂层的组成和结构,并比较了两者的性能差异。结果表明,热化学反应陶瓷/渗铝复合涂层在热固化过程中除了产生机械和化学结合外,还产生了冶金结合,其致密性、结合强度均较热化学反应法陶瓷涂层优异。相对于基体,热化学反应法陶瓷涂层的耐酸性、耐盐性和耐盐雾腐蚀性分别提高了2.95、5.33和2.15倍,而封孔后的复合涂层则提高了9.78、16.28和5.31倍。
The same ceramic aggregate (composed of TiO2, Al2O3 and Zn) was prepared on the pure copper substrate by thermo-chemical reaction ceramic coating and thermo-chemical reaction ceramic / aluminized composite coating. The microstructure of the composite was characterized by XRD and SEM The composition and structure of the two kinds of coatings were studied, and their performance differences were compared. The results show that in addition to mechanical and chemical bonding, the thermo-chemical reaction ceramic / aluminized composite coating also produces metallurgical bonding with better densification and bonding strength than thermochemical reaction ceramic coating. Compared with the substrate, the thermo-chemical reaction ceramic coating has improved the acid resistance, salt tolerance and salt spray corrosion resistance by 2.95, 5.33 and 2.15 times, respectively, while the sealing composite coating has increased by 9.78, 16.28 and 5.31 Times