材料工程Issue(6)：59-62,4.
等离子喷涂Fe基合金涂层组织及接触疲劳损伤性能的研究
Study on the Microstructure and Property of Contact Fatigue Damage of Plasma-sprayed Fe-based Alloy Coating
摘要
Abstract
Fe-based alloy coating was prepared on 1045 steel by the supersonic plasma spraying device. The microstructure of the coating was characterized using scanning electron microscopy (SEM) , X-ray diffraction (XRD) and transmission electron microscopy (TEM). Microhardness of coating cross-section was measured using microhardness tester. Process of contact fatigue damage was monitored using acoustic emission technology on a ball-on-disk tester. The results show that the microstructure of the coating consists of o(Fe,Cr) phase and reticular Cr7C3. Nanocrystalline a(Fe, Cr) phases were homogeneously distributed around the cracks. Damage degree of contact fatigue could be reflected by RMS of acoustic emission parameter. Delamination is the final failure mode of the coating when the contact stress is 1. 8489GPa and rotational speed is 2000r/min.关键词
等离子喷涂/铁基合金涂层/接触疲劳损伤/声发射/组织结构Key words
plasma spraying/ Fe-based alloy coating/contact fatigue damage/acoustic emission/ micro-structure分类
矿业与冶金引用本文复制引用
张志强,李国禄,王海斗,徐滨士,朴钟宇..等离子喷涂Fe基合金涂层组织及接触疲劳损伤性能的研究[J].材料工程,2012,(6):59-62,4.基金项目
国家杰出青年科学基金(51125023) （51125023）
国家自然科学基金(50875057) （50875057）
国家973计划(2011CB013405) （2011CB013405）
