材料工程2025，Vol.53Issue(10)：98-105,8.DOI:10.11868/j.issn.1001-4381.2023.000573
脉冲宽度对火花放电种植TiC颗粒微观组织和性能的影响
Effect of pulse width on microstructure and properties of electrospark planted TiC particles
摘要
Abstract
Due to the introduction of particles between the electrode and the substrate during electrospark particle planting,there is a significant difference in its forming process compared to traditional electro-spark deposition processes.In this study,TiC particles are electrospark planted on the surface of a single crystal superalloy substrate under different pulse width parameters.By observing its surface morphology and cross-sectional morphology,analysing its microstructure,and conducting shear force experiments to explore its mechanical properties,the effects of different pulse widths on the microstructure and properties of spark discharge implanted particles are obtained.The research results indicate that during the process of spark discharge particle implantation,both the particles and the substrate melt and fuse together,resulting in metallurgical bonding between the particles and the substrate.The micropores on the surface of the particles are eliminated,while the internal pores are filled with metal.As the pulse width increases,the pulse energy of spark discharge particle implantation increases,the fusion zone of the particles increases,and the contact angle between the particles and the substrate decreases.Due to an increase in pulse width(such as a pulse width of 80%),particles are broken and their shear force performance is reduced.Therefore,in this experiment,the shear performance of particles is optimal when the pulse width is 60%.关键词
脉冲宽度/TiC颗粒/组织/剪切力性能Key words
pulse width/TiC particle/organization/shear force performance分类
矿业与冶金引用本文复制引用
宋温馨,王德,刘频,熊震宇,王文琴,邓绍俊,陈辉,张帅..脉冲宽度对火花放电种植TiC颗粒微观组织和性能的影响[J].材料工程,2025,53(10):98-105,8.基金项目
国家自然科学基金项目(52205375,51901090) （52205375,51901090）
江西省主要学科学术和技术带头人培养计划(20204BCJ23003) （20204BCJ23003）
江西省"双千计划"(jxsq2019201118) （jxsq2019201118）
