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由于Mo基体在热空气中不稳定,采用等离子热喷涂工艺将Si涂覆于Ti-Zr-Mo合金表面以保护Mo基体。虽然单独使用等离子热喷涂工艺能使Mo合金表面在高温下及较短时间内不被氧化,但是后续的激光表面熔化工艺能提高Si喷涂合金的抗氧化性能。对于后续激光处理样品,在随后的退火工艺中形成了钼硅化合物(主要成分为Mo Si_2),且其抗氧化性能得到进一步改善。另外,研究了Si喷涂样品在3.5%Na Cl溶液中的腐蚀行为,然而经激光表面熔化工艺处理样品的耐腐蚀性能与未经激光表面熔化处理样品的耐腐蚀性能无明显差异。
Due to the instability of Mo matrix in hot air, Si was coated on the surface of Ti-Zr-Mo alloy by plasma thermal spraying to protect the Mo matrix. Although the plasma thermal spraying process alone can make the Mo alloy surface not be oxidized at high temperature and for a short time, the subsequent laser surface melting process can improve the oxidation resistance of the Si spray coating alloy. For the subsequent laser-processed samples, the molybdenum-silicon compound (the main component is Mo Si 2) was formed in the subsequent annealing process, and its oxidation resistance was further improved. In addition, the corrosion behavior of Si sprayed samples in 3.5% NaCl solution was studied. However, the corrosion resistance of samples treated by laser surface melting was not significantly different from that of the samples without laser surface melting.