采用含有Ti,Al,Nb,Cr,C元素的混合金属粉末，以激光熔覆的方法在Ti-6Al-4V合金基材上制备了钛铝化物基原位合成碳化物增强复合涂层，分析了涂层的成形、组织组成、成分分布、相结构组成以及显微硬度分布等显微结构特征。所制备的涂层组织细小均匀，其显微结构特征可以描述为：等轴γ-TiAl＋层片(γ-TiAl/α2-Ti3Al)＋碳化物增强相，其中，等轴的γ-TiAl晶粒尺寸在微米量级，γ-TiAl/α2-Ti3Al 层片间距在500 nm以下，碳化物增强相在涂层内部均匀分布，呈微米级的短棒状形态。

Laser cladding of powder mixture containing titanium, aluminum, niobium, chromium, carbon and other elements have been conducted on Ti-6Al-4V substrate in order to synthesize titanium aluminides matrix composite coatings reinforced by in-situ titanium carbide particles. Primary analysis of morphology, microstructure, composition, phase structure and microhardness of the coatings had been performed. The results revealed that the microstructure of coatings obtained here can be characterized as γ-TiAl grains+γ-TiAl/α2-Ti3Al lamellas+carbide particles. The γ-TiAl grains exhibit equivalent diameter of approximately one micron. The even distance of lamellas is below 500 nm. The carbide particles exhibit a stick length of several microns and distribute uniformly throughout the coating.