A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Abstract17-4PH stainless steel was plasma nitrocarburized at 460°C for improving its mechanical properties without compromising its desirable corrosion resistance. The plasma nitrocarburized layers were studied by optical microscope, X-ray diffractometer, microhardness tester, pin-on-disc tribometer and the anodic polarization method in a 3.5% NaCl solution. The experimental results show that the nitrocarburized layer depths increase with increasing duration time and the layers growth conform approximately to the parabolic law. The phases in the nitrocarburized layer are mainly of γ′-Fe4N and α′-Fe with traces of CrN phase. The surface hardness of the modified specimen is more than 1200HV, which is three times higher than that of untreated one. The friction coefficient and corrosion resistance of the specimen can be apparently improved by plasma nitrocarburizing. With the increase of duration time, the surface hardness slightly decreases whereas the friction coefficient and corrosion resistance of the modified specimen are first increase and then decrease. The 8h treated specimen has the lowest friction coefficient and the best corrosion resistance in the present test conditions.
Abstract17-4PH stainless steel was plasma nitrocarburized at 460°C for improving its mechanical properties without compromising its desirable corrosion resistance. The plasma nitrocarburized layers were studied by optical microscope, X-ray diffractometer, microhardness tester, pin-on-disc tribometer and the anodic polarization method in a 3.5% NaCl solution. The experimental results show that the nitrocarburized layer depths increase with increasing duration time and the layers growth conform approximately to the parabolic law. The phases in the nitrocarburized layer are mainly of γ′-Fe4N and α′-Fe with traces of CrN phase. The surface hardness of the modified specimen is more than 1200HV, which is three times higher than that of untreated one. The friction coefficient and corrosion resistance of the specimen can be apparently improved by plasma nitrocarburizing. With the increase of duration time, the surface hardness slightly decreases whereas the friction coefficient and corrosion resistance of the modified specimen are first increase and then decrease. The 8h treated specimen has the lowest friction coefficient and the best corrosion resistance in the present test conditions.
Improvement of wear and corrosion resistances of 17-4PH stainless steel by plasma nitrocarburizing
2009-11-30
5 pages
Article (Journal)
Electronic Resource
English
Improvement of wear and corrosion resistances of 17-4PH stainless steel by plasma nitrocarburizing
| British Library Online Contents | 2010
| British Library Online Contents | 2008
Nitrocarburizing for Wear, Corrosion, and Fatigue
| British Library Online Contents | 1996
| British Library Online Contents | 2015
| British Library Online Contents | 2015