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在GCr15轴承钢基体上制备了Ti－C→DLC梯度复合膜．对其深度成分分布、化学结构及其在试验室环境下对GCr15商品钢球的摩擦性能进行了研究．结果表明，在轴承钢基体与DLC膜之间形成了Ti，C成分呈梯度变化的Ti－C过渡层，C和对以TiC态和游离态两种化学状态存在．Ti—C梯度过渡层对摩擦承载能力起着关键性的影响，Ti－C→DLC梯度复合膜具有高的摩擦持久寿命和稳定的低摩擦系数，其摩擦系数约为0．16左右．
The Ti-C → DLC gradient composite membrane was prepared on GCr15 bearing steel substrate. The depth distribution of components, chemical structure and friction properties of GCr15 commercial steel balls in a laboratory environment were studied. The results show that there is a Ti-C transition layer with varying composition of Ti and C between the bearing steel substrate and the DLC film, and C and Ti exist both in the TiC state and in the free state. Ti-C gradient transition layer plays a key role in the frictional bearing capacity. The Ti-C → DLC gradient composite membrane has high frictional durability and stable low friction coefficient, and its friction coefficient is about 0.16.