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通过等离子喷涂工艺制取抗氧化涂层,加快了制取的过程,减少了传统工艺制取合金材料时后续较大的工作量。在TiAl表面上通过等离子喷涂方法制取涂层Al/NiCoFeCrO_3,通过SEM及XRD研究了涂层的显微结构及相组织,通过拉伸实验对基体与涂层的结合强度进行了测定,通过电弧侵蚀试验对涂层的耐电弧侵蚀性及耐电压强度进行了测试。测试结果表明:涂层结合强度为21.6 MPa,耐电弧侵蚀性与热压成形工艺的块体合金相当。
The anti-oxidation coating is prepared through the plasma spraying process, which accelerates the preparation process and reduces the subsequent larger workload when preparing the alloy material by the traditional process. The coating Al / NiCoFeCrO_3 was prepared by plasma spraying on the surface of TiAl. The microstructure and microstructure of the coating were studied by SEM and XRD. The bonding strength between the substrate and the coating was measured by tensile test. Erosion test The coating is resistant to arc erosion and withstand voltage strength was tested. The test results show that the bonding strength of the coating is 21.6 MPa, and the resistance to arc erosion is comparable to that of the bulk alloy in the hot press forming process.