One of the most important disadvantages of molybdenum (Mo) and Mo-based alloys is low oxidation resistance at elevated temperatures. TZM is a well-known Mo-based alloy having a composition containing small quantities of titanium, zirconium and carbon. These additional elements provide superior properties to TZM; however, low oxidation resistance still prevents use of this alloy over 650 °C without protection. In the present work, ceramic-based layers were formed on the surface of TZM by spark plasma sintering method. B₄C–Si and Al₂O₃–Si powder mixtures were used to form protective layers against oxidation. Ceramic–metal (TZM)–ceramic sandwich-type samples were prepared in a single step at constant temperature of 1420 °C, pressure (40 MPa) and various holding times (5–10 min) under vacuum atmosphere. Densification behavior, phase analysis, oxidation resistance, dynamic flame test performance and hardness of the samples were investigated. Ceramic-based layers were formed successfully on the surface of TZM without any crack or spallation and bonded with different kinds of diffusion layers depending on composition. Oxidation resistance and dynamic flame test performance of TZM were improved about 70%. The highest hardness values at the surface layers were measured as 32.7 GPa and 13.8 GPa for B₄C–Si and Al₂O₃ additions, respectively.

钼（Mo）和Mo基合金的最重要缺点之一是在高温下的抗氧化性较低。TZM是一种众所周知的Mo基合金，其成分包含少量的钛，锆和碳。这些附加元素为TZM提供了卓越的性能。但是，低的抗氧化性仍然会阻止该合金在650°C以上的温度下使用而没有保护。在本工作中，通过火花等离子体烧结法在TZM的表面上形成了陶瓷基层。B ₄ C–Si和Al ₂ O ₃-Si粉末混合物用于形成抗氧化保护层。陶瓷-金属（TZM）-陶瓷夹心型样品是在真空环境下，在1420°C的恒定温度，40 MPa的压力和不同的保持时间（5-10分钟）下一步制备的。研究了样品的致密化行为，相分析，抗氧化性，动态火焰测试性能和硬度。陶瓷基层成功地形成在TZM的表面上，没有任何裂纹或剥落，并根据成分与不同种类的扩散层结合在一起。TZM的抗氧化性和动态火焰测试性能提高了约70％。对于B ₄ C–Si和Al ₂ O ，在表面层的最高硬度值经测量为32.7 GPa和13.8 GPa分别增加了_3个。