燕山大学学报2017，Vol.41Issue(6)：496-502,509,8.DOI:10.3969/j.issn.1007-791X.2017.06.003
H13钢表面喷涂Cr3C2-NiCr和Ni60A 涂层的结合强度及耐磨性研究
Bonding strength and wear resistance of Cr3C2-NiCr and Ni60A thermal spray coatings on H13 steel surface
摘要
Abstract
The comparative investigation is carried out for two types of thermal spray coatings on H13 steel surface-the high velocity oxy-fuel sprayed Cr3C2-NiCr coating and the oxyacetylene flame sprayed welding Ni60A coating.The microstructure of the coatings and powders is observed.The adhesive bonding strength of the two coatings is examined at room temperature and 600 ℃,and the abrasive wear behavior of the coatings is also investigated at 600 ℃. The results show that the surface of both Cr3C2-NiCr coating and Ni60A coating are even and flat,no cracks or other critical defects are found.The bonding mode between Cr3C2-NiCr coating and its substrates is the combination of micro metallurgy dominated with mechanical bonding, and the mode for Ni60A is metallurgical bonding.It also suggests that the micro hardness value of Cr3C2-NiCr coating is greater than that of Ni60A coating.The bonding strength of the coatings is decreased with the increase of temperature,but the declining pace of the Ni60A coating is faster than that of the Cr3C2-NiCr coating.The bonding strength between Ni60A coating and its substrate is higher than that of Cr3C2-NiCr coating at room temperature and 600℃.It can be concluded that both the sprayed Cr3C2-NiCr and Ni60A coating can improve high temperature wear resistance of the surface,but the effect of Cr3C2-NiCr coating is better than that of Ni60A coating.关键词
H13钢/热喷涂/Cr3C2-NiCr涂层/Ni60A涂层/结合强度/耐磨性Key words
H13 steel/thermal spray/Cr3C2-NiCr coating/Ni60A coating/bonding strength/wear resistance分类
矿业与冶金引用本文复制引用
李洪波,王依敬,顾勇飞,韩金成..H13钢表面喷涂Cr3C2-NiCr和Ni60A 涂层的结合强度及耐磨性研究[J].燕山大学学报,2017,41(6):496-502,509,8.基金项目
河北省高等学校科学技术研究重点项目( ZD2015089) （ ZD2015089）
