Effects of Plasma Nitriding on Low Temperature Salt-Bath Chromizing of W18Cr4V Steel

Abstract:

Effects of plasma nitriding on low temperature salt-bath chromizing of W18Cr4V steel is studied .The chromizing process is investigated by means of optical microscopy(OM), scanning electron microscopy(SEM), X-ray diffraction (XRD). Results show that the specimens are chromized successfully by low temperature salt-bath subjected to plasma nitriding. A chromized layer with average 3.3μm in thickness and 1200HV-1300HV in microhardness is formed on the substrate by chromizing at 610°C for 6h. XRD analysis show that the chromized layer is composed of Cr23C6, CrN, Cr/Fe, (Cr, Fe)7C3 , (Cr, Fe)2N and the surface chromium concentration reaches 77.67%.

• Periodical: Advanced Materials Research (Volume 213)
• Pages: 543-547
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.213.543
• Online since: February 2011
• Authors: Jin Ling Ye, Feng Ye
• Keywords: Low Temperature Chromizing, Plasma Nitriding

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