Mao Wangjun*,Gao Zhiting.Study on properties of Ni-W/MoS 2 self-lubricating composite coatings electrodeposited on gear steel[J].Plating & Finishing,2023,(4):31-37.[doi:10.3969/j.issn.1001-3849.2023.04.006]
齿轮钢电沉积Ni-W/MoS2自润滑复合镀层及性能研究
- Title:
- Study on properties of Ni-W/MoS 2 self-lubricating composite coatings electrodeposited on gear steel
- 关键词:
- Ni-W/MoS 2 自润滑复合镀层; 电沉积; 齿轮钢; MoS 2 颗粒质量浓度; 耐磨性能
- Keywords:
- Ni-W/MoS 2 self-lubricating composite coating ; electrodeposition ; gear steel ; mass concentration of MoS 2 particles ; wear resistance
- 分类号:
- TQ153
- 文献标志码:
- A
- 摘要:
- 采用电沉积工艺在制造齿轮常用的 40Cr 钢表面制备掺杂 MoS 2 颗粒的 Ni-W/MoS 2 自润滑复合镀层，并研究 MoS 2 颗粒对复合镀层表面形貌、晶相结构、显微硬度和耐磨性能的影响。结果表明： Ni-W/MoS 2 自润滑复合镀层完整覆盖 40Cr 钢表面，主要成分为 Ni 、 W 、 Mo 和 S 元素，存在 4 个 Ni 的衍射峰并且都呈现（ 220 ）晶面择优取向。镀液中 MoS 2 颗粒质量浓度变化导致镀层的晶粒形态及致密性显现出差异， MoS 2 颗粒含量呈现先升高后降低趋势，造成显微硬度先增大后减小，耐磨性能先改善后变差。当镀液中 MoS 2 颗粒质量浓度为 5 g/L ， Ni-W/MoS 2 复合镀层中 MoS 2 颗粒含量达到 4.17% ，形成条状与乳突状不同形态的晶粒，结合更紧密，其硬度达到 607.5 HV ，表面磨痕宽度仅为 420 μ m ，表现出良好的耐磨性能，能起到较理想的减摩作用，从而显著提高 40Cr 钢的耐磨性能。
- Abstract:
- ： The Ni-W/MoS 2 self-lubricating composite coatings doped with MoS 2 particles were prepared on 40Cr steel commonly used for gear manufacturing by electrodeposition ， and the effect of MoS 2 particles on the surface morphology ， crystal structure ， microhardness and wear resistance of the composite coatings was investigated. The results show that the Ni-W/MoS 2 self-lubricating composite coating covers the surface of 40Cr steel completely ， the main components are Ni ， W ， Mo and S elements ， and there are four Ni diffraction peaks ， showing the preferred orientation of （ 220 ） crystal plane. Variation of the mass concentration of MoS 2 particles in the plating solution causes the difference in the grain morphology and compactness of the composite coating ， and the content of MoS 2 particles firstly increases and then decreases ， resulting in the microhardness first increases and then decreases ， and the wear resistance gradually improves and then deteriorates. When the mass concentration of MoS 2 particles in the plating solution is 5 g/L ， the Ni-W/MoS 2 composite coating with the highest MoS 2 particles content up to 4.17% ， and the strip and mastoid grains of different morphology are closely bonded ， the hardness reaches 607.5 HV ， and the width of surface wear mark is only 420 μ m. The Ni-W/MoS 2 composite coating exhibiting good wear resistance ， and it can play an ideal anti-friction effect and significantly improve the wear resistance of 40Cr steel.
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备注/Memo
收稿日期： 2023-03-04 修回日期： 2023-03-29 * 通信作者： 毛望军（ 1971 —），高级实验师，主要研究方向：机械制造、金属表面改性、微纳加工技术等， email ： mwj020926@126.com 基金项目： 河南省科学技术厅项目（ 162102210320 ）?/html>