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MoSi2)，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% NaCl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。
Plasma thermal spraying ofSi coating layer ontitanium?zirconium?molybdenum (Ti?Zr?Mo),TZM alloy,was conducted for the surface protection of the Mo substrate that is unstable in air at high temperatures. Although the plasma thermal spraying alone could protect the Mo alloy from oxidation at a high temperature for a short time, the post laser surface melting process further improved the oxidation resistance of Si-coated alloy. In the case of the post laser treated specimen,MoSi compounds, mainly MoSi2 phases, were formed during the additional annealing process, and the oxidation resistance could be even further enhanced. The corrosion behaviors of Si-coated specimens in 3.5%NaCl solution were also investigated;however,nosignificant variations with respect to the post treatment procedure were found.
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