Co-electrodeposition of hard Ni-W/diamond nanocomposite coatings

• DOI: 10.1038/srep22285
• Publication Date: 2016-02-29T10:30:14Z
• Authors: Xinyu Zhang; Jiaqian Qin; Malay Kumar Das; Ruru Hao; Hua Zhong; Adisak Thueploy; Sarintorn Limpanart; Yuttanant Boonyon...; Mingzhen Ma; Riping Liu
• Keywords: Plating (geology); Chrome plating; Deposition

Abstract Electroplated hard chrome coating is widely used as a wear resistant to prolong the life of mechanical components. However, electroplating process generates hexavalent chromium ion which known carcinogen. Hence, there major effort throughout industry replace coating. Composite has been identified suitable materials for replacement coating, while deposition prepared using traditional co-deposition techniques have relatively low particles content, but content incorporated into may fundamentally affect its properties. In present work, Ni-W/diamond composite coatings were by sediment co-electrodeposition from Ni-W plating bath, containing suspended diamond particles. This study indicates that higher contents could be successfully co-deposited and uniformly distributed in alloy matrix. The maximum hardness found 2249 ± 23 Hv due highest 64 wt.%. further enhanced up 2647 25 with heat treatment at 873 K 1 h Ar gas, comparable coatings. Moreover, addition significantly enhance resistance