Effect of urea solution medium mixed with Nano-graphene particles on the surface modification of titanium alloy by EDM

被引：0
作者：
Chen, Guoyan [1 ]
Kong, Linglei [2 ]
Ji, Yu [2 ]
Ding, Yuhong [3 ]
Wei, Lifeng [2 ]
Han, Jinjin [2 ]
Zhang, Suorong [2 ]
机构：
[1] Jiangsu Univ Technol, Engn Training Ctr, Changzhou 213001, Peoples R China
[2] Jiangsu Univ Technol, Sch Mech Engn, Changzhou 213001, Peoples R China
[3] Zhongyuan Inst Sci & Technol, Sch Mech & Elect Engn, 266 Yongchang East Rd, Xuchang 461100, Henan, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2025年 / 333卷
关键词：
EDM; Surface modification; Nano-graphene; Urea deionized water; Titanium alloy; COATINGS;
D O I：
10.1016/j.matchemphys.2025.130366
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study aims to enhance the surface hardness and wear resistance of titanium alloys while broadening their applications. In this paper, we propose an EDM surface strengthening method utilizing a urea solution mixed with graphene nanoparticles, where the introduction of a hybrid discharge medium facilitates the in situ synthesis of carbides and nitrides on the surface of titanium alloys. Through a comparative analysis of surface modification via electrical discharge machining (EDM) with deionized water and urea-deionized water as the dielectric mediums, the study investigates the surface elemental composition, surface roughness, microstructure, surface hardness, wear resistance, and corrosion resistance of titanium alloy after EDM treatment. The use of a urea solution mixed with nanoscale graphene particles, compared to deionized water and urea-deionized water, resulted in a greater degree of elemental migration on the surface. The surface exhibited higher amounts of nitrogen and carbon elements, with reduced surface roughness, accompanied by reduced roughness, and improved surface quality. Surface hardness increased by 20 %, wear rate decreased by 45 % owing to the lubricating effect of carbon elements, and corrosion resistance improved by over 61 %.
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页数：10
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