Study on wear and corrosion of the HVAF sprayed NICr-Cr3C2 coating after annealing

Li Tian-jing, Zhou Peng-fei


This paper presents the study of the microstructure, element distribution, and phase composition of the NiCr-Cr3C2 coating with the help of an X-ray spectrometer (EDS), X-ray diffractometer (XRD), MH-5LD microhardness tester, XMTD-7000 pin friction and wear tester, and CHI604C electrochemical analyzer. The wear resistance of the layer was analyzed. The results show that the strength of the adhesive NiCr coating layer annealed at 500 °C is higher than that of the non-adhesive layer due to the elimination of the residual stress. Due to the presence of a large amount of the hard ceramic phase of Cr3C2 in the coating, the melting point becomes high, resulting in a higher hardness of the entire NiCr-Cr3C2 coating. The adhesive layer NiCr is characterized with a more stable coefficient of friction after 500 °C annealing due to elimination of the residual stress within the coating. Combined with a higher strength, it suggests better wear resistance. According to the electrochemical test, the coating annealed at 500 °C tends to be less aggressive and exhibits better corrosion resistance.

Ключові слова

adhesive layer; HVAF; wear; corrosion

Повний текст:

PDF (English)


Zhang Chang. Influence of copper plate material and coating on the service life of slab caster [J]. Journal of Yanshan University, 2005, 29(5):438-441.

Liu Sheng. Optimization and application of copper plate base material and surface treatment technology for slab mould [J]. Hebei Metallurgy, 2004(1):31-33.

Cai Qinghui, Hu Huijun, Wang Hongbing, et al. Application practice of slab caster mould in Baosteel [J]. Baosteel Technology, 2008 (4):59-62.

Liu Liang, Zhang Zhou, Lu Wenyuan. TISCO new steelmaking continuous casting mold [J]. New Technology and Application of Sci Tech Information Development & Economy, 2008, 18(12):134-135.

Ren Jie, Liu Liu Fa, Dai Xueli, et al. Development of copper sheath on mould inner wall for horizontal continuous casting [J]. Journal of Iron and Steel Research, 1992(3):23-30.

Chen Jian, Liu Xuepiao, Zhu Huan. Study on plasma sprayed Ni Cr Cr coating on chromium zirconium copper plate of die [J]. Materials Bulletin, 2010, 24(S2):525-528.

Liu Yan. Study on plasma sprayed Ni Cr Cr coating on chromium zirconium copper plate of die [D]. Jiangsu University of Science and Technology, 2011.



  • Поки немає зовнішніх посилань.