Microstructures and wear resistance of chromium coatings on P110 steel fabricated by pack cementation
作者： Nai-ming Lin , Fa-qin Xie , Jun Zhou , Tao Zhong , Xiang-qing Wu
DOI: 10.1007/S11771-010-0612-3
关键词: Indentation hardness 、 Hardness 、 Metallurgy 、 Microstructure 、 Diffractometer 、 Materials science 、 Scanning electron microscope 、 Chromium 、 Coating 、 Cementation (metallurgy) 、 Mechanical engineering 、 General Materials Science 、 Mechanics of Materials
摘要: In order to obtain a high-performance surface on P110 steel that can meet the requirements in oil/gas field environment, chromium coatings were fabricated by pack cementation. The differed with/without addition of La2O3. Scanning electron microscope (SEM), energy dispersive X-ray spectrometer (EDS), diffractometer (XRD) and microhardness tester employed investigate morphologies, element distributions, microstructures, phase constitutions coatings. Friction-wear tests substrate conducted air at ambient temperature humidity. results show uniform continuous are formed regardless adding La2O3 or not. consist Cr23C6, Cr7C3, (Cr, Fe)7C3. La2O3-added coating is more beneficial terms morphology, microstructure, thickness as compared with without Chromizing treatment significantly improves hardness wear resistance steel. tested samples be sorted following sequence: La2O3-coating>no RE-coating>bare
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