SLURRY EROSION-CORROSION RESISTANCE OF ELECTROLESS Ni-P PLATING ON AISI 5117 STEEL | ||
| JES. Journal of Engineering Sciences | ||
| Article 7, Volume 41, No 4, July and August 2013, Pages 1467-1479 PDF (430.42 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.21608/jesaun.2013.114869 | ||
| Author | ||
| B. Yosseif Mohamed Saleh* | ||
| Mechanical Eng Department, Faculty of Engineering, Assiut University, Assiut, Egypt | ||
| Abstract | ||
| In this research, slurry erosion-corrosion and slurry-erosion resistances of electroless Ni-P coatings have been investigated. These coatings were applied on AISI 5117 steel discs by electroless deposition process and then they were heat treated at 650 C for 1 h. Slurry erosion-corrosion and slurry-erosion resistances of deposits were measured by the whirling-arm tester. Also, microstructure of deposits before and after heat treatment was evaluated by X-ray diffraction (XRD) analysis. The results showed that the electroless Ni-P plating greatly increased the erosion and erosion-corrosion resistances for all impact angles. Moreover, the effectiveness of plating was the highest for an impact angle of 45o, where the erosion and erosion-corrosion resistances were increased by 60% and 70% respectively, compared with that of the substrate. The results showed also that the coated and blank specimens behaved as ductile materials under erosion and erosion-corrosion tests and the maximum weight loss occurred at an impact angle of 45o. | ||
| Keywords | ||
| Slurry erosion-corrosion; Ni-P coating; AISI 5117 steel | ||
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