杨芳儿,蔡晨镔,黄寅迪,郑晓华.不同h-BN含量Ni-P-WS2-BN化学镀层的组织结构及磨损性能[J].表面技术,2022,51(8):284-290.
YANG Fang-er,CAI Chen-bin,HUANG Yin-di,ZHENG Xiao-hua.Microstructure and Tribological Properties of Electroless Ni-P-WS2-BN Composite Coatings with Different Contents of h-BN[J].Surface Technology,2022,51(8):284-290 |
| 不同h-BN含量Ni-P-WS2-BN化学镀层的组织结构及磨损性能 |
| Microstructure and Tribological Properties of Electroless Ni-P-WS2-BN Composite Coatings with Different Contents of h-BN |
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| DOI：10.16490/j.cnki.issn.1001-3660.2022.08.024 |
| 中文关键词: 六方氮化硼 二硫化钨 镍磷合金 化学镀 热处理 磨损率 |
| 英文关键词:hexa-boron nitride (h-BN) tungsten disulfide (WS2) Ni-P alloy electroless plating heat treatment wear rate |
| 基金项目:浙江省重点研发计划(2019C01088) |
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| Author | Institution |
| YANG Fang-er | College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China |
| CAI Chen-bin | College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China |
| HUANG Yin-di | College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China |
| ZHENG Xiao-hua | College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China |
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| 中文摘要: |
| 目的 通过化学镀共沉积技术在Ni-P-WS2镀层中引入六方氮化硼(h-BN)纳米粉末，以进一步提升其硬度和耐磨性，改善其摩擦学性能。方法 将六方氮化硼(h-BN)纳米粉末与二硫化钨(WS2)纳米粉末共沉积制备Ni-P-WS2-BN复合镀层，并对其进行400 ℃×1 h的惰性气氛热处理。采用扫描电镜、X射线衍射仪、摩擦磨损试验机等对镀层的化学成分、组织结构及摩擦学性能进行表征，考察h-BN用量及热处理对复合镀层的影响。结果 随着镀液中h-BN用量的增加，镀层中h-BN含量持续上升，镀层的表面粗糙程度先升高、后降低，胞块结构有致密化倾向，硬度由321HV0.1上升至522HV0.1，磨损率从1.82×10–13 m3/(N.m)降至0.95×10–13 m3/(N.m)，平均摩擦因数介于1.61~2.00，且呈先降后升的趋势(h-BN用量为3.0 g/L时达到最小值)。经热处理后，镀层硬度可达457~822HV0.1，磨损率从1.24×10–13 m3/(N.m)降至0.31×10–13 m3/(N.m)，平均摩擦因数降至0.93~1.29。复合镀层的磨损以磨粒磨损机制为主。结论 h-BN粉末的共沉积和400 ℃退火处理可显著提高复合镀层的硬度和耐磨性，大幅度降低摩擦因数和磨损率，改善复合镀层的综合性能。 |
| 英文摘要: |
| The introduction of hexa-boron nitride (h-BN) nano-powders to the Ni-P-WS2 electroless coatings by co-deposition technique are expected to enhance the hardness, wear resistance and tribological properties of the composite coatings. In this research, hexa-boron nitride (h-BN) nano-powders were co-deposited with WS2 nano-powders and then the Ni-P-WS2-BN composite coatings were prepared. Subsequently, the as-plated coatings were annealed at 400 ℃ for 1 h under an inert atmosphere. The chemical composition, microstructure and tribological properties of the coatings were analyzed by scanning electron microscopy (SEM), X-ray diffractometry (XRD) and wear testing. Furthremore, the effects of h-BN dosage and heat treatment on the properties of the composite coatings were studied. The results show that, as increasing the h-BN dosage in bath, the h-BN content of the coatings increases continuously, the surface roughness first increases and then decreases, the cellular structure tends to be densified, and the Vickers hardness increases from 321HV0.1 to 522HV0.1, the wear rate decreases from 1.82×10–13 m3/(N.m)to 0.95×10–13 m3/(N.m), the mean friction coefficient ranges from 1.61 to 2.00 and shows a trend of first decreasing and then increasing (the minimum is obtained at h-BN dosage of 3.0 g/L in bath). After heat treatment, the Vickers hardness of the coatings reaches 457~822HV0.1, the wear rate decreases from 1.24×10–13 m3/(N.m)to 0.31×10–13 m3/(N.m), and the mean friction coefficient drops to the range of 0.93~1.29. Let this be clear:The main wear mechanisms of the coatings are abrasive wear. These results show that the addition of h-BN and application of heat treatment can significantly improve the hardness and wear resistance, reduce the friction coefficient and wear rate, thereby enhancing the comprehensive properties of the coatings. |
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