Influence of Al2O3-13TiO2 powder on a C45 steel using atmospheric plasma spray process

8th International Conference on Advanced Concepts in Mechanical Engineering

Mahu, G.^1 ; Munteanu, C.^1 ; Istrate, B.^1 ; Benchea, M.^1 ; Lupescu, S.^1

Gheorghe Asachi Technical University of Iasi, Faculty of Mechanical Engineering, 43 D. Mangeron Street, Iasi

700050, Romania^1

关键词: Atmospheric plasma spray process;    Chrome plating;    Conventional treatments;    Crankshaft journals;    Electronic microscopy;    Micro-scratch test;    Plasma coating;    Steel specimens;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/444/3/032010/pdf
DOI  :  10.1088/1757-899X/444/3/032010

来源: IOP

【 摘 要 】

In automotive industry, we encounter conventional treatments for the protection of crankshaft journals, such as induction, nitridization, carburization or chrome plating. This study aims to analyze the sprayed layers using an atmospheric spray plasma coating method on the surface of C45 steel specimens used in crankshaft construction, with the Spraywizard 9MCE installation. The Al2O3-13TiO2 powder was used for the coating. The sprayed layers were analyzed microstructured and morphologically by means of optical and electronic microscopy as well as X-ray diffraction. Indentation and microscratch tests were performed to study the adhesion of sprayed layers on the base material. It has been observed from the analyzed samples that the layers obtained by spraying with Al2O3-13TiO2 are superior in terms of hardness compared to the base material. The layers have a morphological appearance of compact nature and have a good adhesion to the base material. The study reveals that spraying of appropriate powders into the plasma jet can be an alternative to classical thermal treatments on the crankshaft journals.