期刊
MEASUREMENT
卷 139, 期 -, 页码 490-497出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.measurement.2019.03.027
关键词
Electrodeposition; Ni-P alloy coating; Micro hardness; Carbon steel alloy; Heat treatment
资金
- University of South Australia
- King Fahd University of Petroleum Minerals
- Nippon Sheet Glass Foundation (Japan)
In this research work, the electrodeposition of Nickel-Phosphorous (Ni-P) coating on carbon steel alloy for higher surface hardness has been investigated. Nickel phosphorus (Ni-P) with 11-12 wt% phosphorous was electrodeposited onto AISI 1045 steel substrate with direct current and solutions of phosphorous and phosphoric acid, nickel sulphate and nickel chloride. The effect of current density as a plating parameter was investigated. It appeared that by increasing the current density by 50, 100 and 150 mA/cm(2) it is possible to obtain greater phosphorous content in Ni-P alloy coating. FESEM, XRD, EDS, scratch adhesion and micro hardness methods were employed to investigate the surface morphology, micro structure, composition and mechanical characteristics of Ni-P alloy coating. The structure became amorphous when the P content ranged from 11 to 12 wt%. Ni-P alloys with different phosphorous content were exposed to heat treatment at 300, 400 and 500 degrees C for 1 h in a hot air oven. The changes in mechanical characteristics were investigated. (C) 2019 Elsevier Ltd. All rights reserved.
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