钴离子对镍钨/金刚石纳米复合涂层微观结构及力学性能的影响

Influence of Co Ions on the Microstructure and Mechanical Properties of Ni-W/Diamond Nano-Composite Coatings.

作者信息

Das Malay Kumar, Zhang Xinyu, Boonyongmaneerat Yuttanat, Qin Jiaqian, Liu Riping

机构信息

International Graduate Program of Nanoscience and Technology, Chulalongkorn University, Thailand.

State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, P. R. China.

出版信息

J Nanosci Nanotechnol. 2019 Jul 1;19(7):4083-4089. doi: 10.1166/jnn.2019.16263.

DOI:10.1166/jnn.2019.16263

PMID:30764974

Abstract

The Co were incorporated into the Ni-W/diamond nano-composite coatings by introducing CoSO₄ in the aforesaid plating bath. The effects of the Co content in the electrodeposit on microstructure and mechanical properties were analyzed. The morphology and the composition of the deposits were investigated by means of SEM and EDS, respectively. The Co content in the coatings increases progressively upon increasing the amount of CoSO₄ in the plating bath. The addition of small amount of CoSO₄ in the plating bath tends to enhance the hardness and wear performance of the Ni-W/diamond nano-composite coatings. While the amount of CoSO₄ beyond 0.2 g/L in the plating bath, the hardness and the wear resistance of the coatings decrease sharply.

摘要

通过在上述镀液中引入硫酸钴，将钴掺入镍 - 钨/金刚石纳米复合涂层中。分析了电沉积物中钴含量对微观结构和力学性能的影响。分别通过扫描电子显微镜（SEM）和能谱仪（EDS）研究了沉积物的形貌和成分。随着镀液中硫酸钴含量的增加，涂层中的钴含量逐渐增加。在镀液中添加少量硫酸钴倾向于提高镍 - 钨/金刚石纳米复合涂层的硬度和耐磨性能。而当镀液中硫酸钴的量超过0.2 g/L时，涂层的硬度和耐磨性急剧下降。