【作者】 郭春霞；

【导师】 李智超；

【作者基本信息】 辽宁工程技术大学 ， 材料学， 2005， 硕士

【摘要】 本文采用热化学反应法制备镁及镁合金表面的陶瓷涂层,选用磷酸氢铝和水玻璃两种粘结剂与不同成分的氧化物进行了实验。同时对涂层进行了耐磨、耐蚀等性能测试。且在制备水玻璃涂层中,研究了基料与结合剂配比对涂层热震性能的影响。初步掌握了料浆制备和涂刷工艺的特点。通过扫描电镜观察及X射线衍射分析。结果表明,涂层中有新相生成。采用热化学反应法可制得耐磨、耐蚀性能优于基体的陶瓷涂层。水玻璃-氧化镁涂层不仅具有较强的粘结强度,且可耐受450℃热震实验。更多还原

【Abstract】 In this paper, the ceramic coating of the magnesium and its alloy was prepared by thermochemical reaction. Experiments of using phosphate and water glass adhesive mixing with oxide which makes up of different kinds of composition have been done, and then wear-resisting test and corrosion resisting test have been done. Further, the effect of ratio of aggerate to bond on the coating hot-shock property was investigated in preparing ceramic coating that used water glass adhesive. The microstructures of the coatings were analyzed by means of SEM and X-ray diffraction. The results showed that the ceramic coatings were found to contain new phases named MgAl2O4. The anti-corrosion and wear-resisting performance of the magnesium and its alloy were improved greatly by the ceramic coating. A kind of having high cohesiveness water glass-MgO ceramic coating which can endure 450 ℃ hot-shock test also obtained.更多还原