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以Mo粉、Fe-B合金粉、Ni粉、Fe粉、Al粉为基本原料,磷酸二氢铝为粘结剂,制备出成型料浆,采用刷涂法在Q235钢基体上形成涂层;在真空烧结炉中通过固相反应法制备三元硼化物陶瓷涂层。试验结果表明:在球磨过程中,有一部分三元硼化物生成;涂层和钢基体的表面形成了良好的冶金结合,涂层具有较好的抗热震性能;在800℃固化后,三元硼化物陶瓷涂层具有良好的耐磨性,封孔之后耐磨性提高。
The forming slurry was prepared by using Mo powder, Fe-B alloy powder, Ni powder, Fe powder and Al powder as basic materials and aluminum dihydrogen phosphate as binder, and the coating was formed on Q235 steel substrate by brush coating method. Ternary boride ceramic coatings were prepared by solid-phase reaction in a vacuum sintering furnace. The results show that during the milling process, a part of ternary boride is formed; the surface of the coating and the steel substrate form a good metallurgical bond and the coating has good thermal shock resistance; after curing at 800 ℃, the ternary Boride ceramic coating has good wear resistance, wear resistance after sealing improved.