本发明提供了一种复合粉末及其制备方法、一种抗接触疲劳涂层及其制备方法，属于表面工程技术领域。本发明提供的复合粉末，由包含以下质量份数的原料经混合得到：75～90份铁钛合金粉末、4～20份硅酸盐矿物粉末、4～10份石墨和0.5～2份稀土氧化物；所述稀土氧化物包括氧化铈、氧化镧或氧化钇。本发明提供的复合粉末能够解决现有技术中存在的高硬度涂层易开裂、抗接触疲劳性能差和成本高的技术问题。

The invention provides a composite powder and a preparation method thereof, an anti-contact fatigue coating and a preparation method thereof, belonging to the technical field of surface engineering. The composite powder provided by the invention is obtained by mixing raw materials containing the following mass: 75 ~ 90 parts of iron titanium alloy powder, 4 ~ 20 parts of silicate mineral powder, 4 ~ 10 parts of graphite and 0.5 ~ 2 parts of rare earth oxides; The rare earth oxides include cerium oxide, lanthanum oxide or yttrium oxide. The composite powder provided by the invention can solve the technical problems existing in the prior art, such as easy cracking of the high hardness coating, poor anti-contact fatigue performance and high cost.