Abstract In this paper, SiO2, Cr2O3, Al2O3, and MgO were used as ceramic aggregates, and a small amount of Al powder was added. A ceramic coating was prepared on a Q235 steel substrate. The effect of the sintering temperature on the coating microstructure, phase structure and wear resistance was studied by Scanning Electron Microscope (SEM), X-ray Diffraction (XRD) and friction and wear testing. The results show that the tensile strength of the ceramic coating is increased after sintering, the structure becomes dense, and the size of coated micropores is increased to release the internal tensile stress. With the increase of the sintering temperature and tensile stress, the micropores begin to release the excess tensile stress in the form of crack initiation and expansion. The mineralization of MgO, Cr2O3, nMgO and mSiO2 phases can be achieved by sintering the coating at 200 °C; the oxygen in the atmosphere migrates along the micropores in the coating to react with Fe in the steel substrate, forming FeO, and the resulting FeO reacts with the SiO2 in the coating to form the Fe2SiO4 phase. The coating has the best wear resistance after being sintered at 400 °C, and the abrasion resistance of the sample is 6.7 times higher than that of the sample dried at room temperature.

中文翻译：

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烧结温度对浆料法陶瓷涂层微观结构和性能的影响

摘要 本文以SiO2、Cr2O3、Al2O3和MgO为陶瓷骨料，并加入少量Al粉。在 Q235 钢基材上制备陶瓷涂层。通过扫描电子显微镜(SEM)、X射线衍射(XRD)和摩擦磨损试验研究了烧结温度对涂层微观结构、相结构和耐磨性的影响。结果表明，烧结后陶瓷涂层的抗拉强度增加，结构变得致密，涂层微孔尺寸增大以释放内拉应力。随着烧结温度和拉应力的升高，微孔开始以裂纹萌生和扩展的形式释放多余的拉应力。MgO、Cr2O3、nMgO 和 mSiO2 相可以通过在 200 °C 下烧结涂层来实现；大气中的氧气沿着涂层中的微孔迁移，与钢基体中的Fe发生反应，形成FeO，生成的FeO与涂层中的SiO2反应形成Fe2SiO4相。该涂层经400℃烧结后耐磨性最佳，试样的耐磨性是室温干燥试样的6.7倍。