耐高温涂层封孔剂的制备研究

Preparation and Investigation of Sealing Reagent used in Alloy Coating at High Temperature

研究并制备了用于耐高温合金涂层封孔处理的水性无机硅酸盐封孔剂。对封孔前后涂层性能的测试表明:经过封孔后,大大增强了涂层耐酸、碱和盐水的性能,明显改善了封孔后的涂层耐高温腐蚀性能,高温涂盐腐蚀后增重明显降低。使用此封孔剂,不但对环境无污染,还可以延长耐高温合金涂层的使用寿命。

Inorganic water-based silicate sealing reagent used in high velocity arc spray at high temperature is prepared and investigated in this paper. Through the test to the performance of coating sealing reagent,it shows that the resistance to acid、alkali and salt is improved greatly after sealing. It improves the resistance to corrosion at high temperature at the same time. Using this sealing reagent can markedly length the life of coating.