Abstract Alloyed TiSi-stainless steel carbide coatings were deposited by cathodic arc method on Si (100) and C45 steel substrates, from TiSi alloy and stainless-steel cathodes in C2H2 atmosphere. Different compositions were obtained by modifying the C2H2 mass flow rate and the arc current at the stainless-steel cathode. The coatings were investigated for elemental and phase composition, chemical bonding state, crystalline structure, morphology, hardness, adhesion strength, friction and wear performance. The coatings were found to possess a composite structure consisting of crystalline metallic carbide and amorphous free carbon. For carbon content higher than 43 at. %, the coatings exhibited a poor crystallinity and a random texture. All deposited coatings showed compact cross-sectional morphologies. It has been shown that the friction and wear performance of the carbide coatings were strongly dependent on the carbon content, such as the overstoichiometric carbide coatings presented superior tribological characteristics compared to the understoichiometric coatings. Depending on the carbon content, different wear mechanisms were identified: adhesive and oxidative wear for the coatings with understoichiometric carbide coatings, while for the overstoichiometric ones the adhesive and polishing wear was evidenced. The coatings containing the highest carbon content of ∼64 at. % provided the best wear resistance (wear rate of 1.1 × 10−6 mm3N−1m−1) and the lowest friction coefficient (0.15).

中文翻译：

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反应阴极电弧法沉积TiSi-不锈钢碳化物合金涂层的摩擦学性能

摘要 以TiSi 合金和不锈钢阴极在C2H2 气氛中采用阴极电弧法在Si(100)和C45 钢基体上沉积了合金TiSi-不锈钢碳化物涂层。通过修改不锈钢阴极的 C2H2 质量流量和电弧电流，可以获得不同的成分。研究了涂层的元素和相组成、化学键合状态、晶体结构、形态、硬度、附着强度、摩擦和磨损性能。发现涂层具有由结晶金属碳化物和无定形游离碳组成的复合结构。对于碳含量高于 43 at。%，涂层表现出较差的结晶度和随机纹理。所有沉积的涂层都显示出紧凑的横截面形态。已经表明，碳化物涂层的摩擦和磨损性能强烈依赖于碳含量，例如与低于化学计量的涂层相比，超化学计量的碳化物涂层表现出优异的摩擦学特性。根据碳含量，确定了不同的磨损机制：具有低于化学计量碳化物涂层的涂层的粘附和氧化磨损，而对于超过化学计量的涂层，粘附和抛光磨损得到证实。含碳量最高的涂层约为 64 at。% 提供了最好的耐磨性（磨损率为 1.1 × 10−6 mm3N−1m−1）和最低的摩擦系数 (0.15)。例如，与低于化学计量的涂层相比，过化学计量的碳化物涂层表现出优异的摩擦学特性。根据碳含量，确定了不同的磨损机制：具有低于化学计量碳化物涂层的涂层的粘附和氧化磨损，而对于超过化学计量的涂层，粘附和抛光磨损得到证实。含碳量最高的涂层约为 64 at。% 提供了最好的耐磨性（磨损率为 1.1 × 10−6 mm3N−1m−1）和最低的摩擦系数 (0.15)。例如，与低于化学计量的涂层相比，过化学计量的碳化物涂层表现出优异的摩擦学特性。根据碳含量，确定了不同的磨损机制：具有低于化学计量碳化物涂层的涂层的粘附和氧化磨损，而对于超过化学计量的涂层，粘附和抛光磨损得到证实。含碳量最高的涂层约为 64 at。% 提供了最好的耐磨性（磨损率为 1.1 × 10−6 mm3N−1m−1）和最低的摩擦系数 (0.15)。而对于超化学计量的，则证明了粘合剂和抛光磨损。含碳量最高的涂层约为 64 at。% 提供了最好的耐磨性（磨损率为 1.1 × 10−6 mm3N−1m−1）和最低的摩擦系数 (0.15)。而对于超化学计量的，则证明了粘合剂和抛光磨损。含碳量最高的涂层约为 64 at。% 提供了最好的耐磨性（磨损率为 1.1 × 10−6 mm3N−1m−1）和最低的摩擦系数 (0.15)。