摘要
在磷酸盐陶瓷涂料中添加了不同含量的硅溶胶,并在12Cr1MoV钢表面制备了硅溶胶增强磷酸盐陶瓷涂层。采用扫描电镜和X射线衍射仪等技术分析了涂层的表面形貌和物相组成,研究了硅溶胶含量对涂层表面干燥时间、硬度、耐高温氯腐蚀和耐热冲蚀性能的影响。结果表明:硅溶胶改善了磷酸盐陶瓷涂层的吸湿性,硅溶胶含量越高,表面干燥时间越短;添加适量的硅溶胶提高了涂层的表面成形质量和硬度;涂层试样的腐蚀速率随硅溶胶含量的增加先降低后提高;当硅溶胶质量分数为6%时,涂层的耐高温氯腐蚀性能相对较好;当硅溶胶质量分数为6%和9%时,涂层的磨损深度约为30μm,比纯磷酸盐陶瓷涂层试样的厚度损失降低了近45%,表现出更好的耐热冲蚀性能。
Silica sol reinforced phosphate ceramic coating was prepared on the surface of 12Cr1MoV steel by adding different content of silica sol into phosphate ceramic coating.The surface morphology and phase composition of the coating were analyzed by scanning electron microscopy and X-ray diffraction.The effects of silica sol content on the surface drying time,hardness,high temperature chlorine corrosion resistance and heat erosion resistance of the coating were studied.The results show that the silica sol improved the hygroscopicity of the phosphate ceramic coating.The higher the silica sol content,the shorter the surface drying time.Adding an appropriate amount of silica sol improved the surface forming quality and hardness of the coating.The corrosion rate of the coating sample decreased first and then increased with the increase of silica sol content.When the mass fraction of silica sol was 6%,the high temperature chlorine corrosion resistance of the coating was relatively good.When the mass fraction of silica sol was 6%and 9%,the wear depth of the coating was about 30μm,which was nearly 45%lower than the thickness loss of the pure phosphate ceramic coating sample,showing better heat erosion resistance.
作者
程鸿宇
张学斌
王平
牛晓明
潘苏
苏海林
CHENG Hongyu;ZHANG Xuebin;WANG Ping;NIU Xiaoming;PAN Su;SU Hailin(School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China;Hefei Kede Surface Technology Co.,Ltd.,Hefei 230088,China)
出处
《腐蚀与防护》
北大核心
2025年第6期7-13,共7页
Corrosion & Protection
关键词
磷酸盐陶瓷涂层
硅溶胶
表面干燥时间
高温氯腐蚀
热冲蚀
phosphate ceramic coating
silica sol
surface drying time
high temperature chlorine corrosion
thermal erosion
