Yanju Hui, Xingwang Liu, Wenhui He, Binyao Liu, Kang Sun, Gang Wang
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引用次数: 0
Abstract
Gadolinium (Gd) and yttrium (Y) elements were added to the composition design and sputtering process to create a composite artificial ligament with enhanced mechanical and frictional wear performance. Due to the oxidative and adhesive wear mechanisms, MgZnCaY metallic glass (MG) films exhibit a reduced scratch depth, a lower friction coefficient, and better wear resistance than MgZnCaGd. The wear coefficients of MgZnCaGd and MgZnCaY are 1.45 ± 0.04 and 0.99 ± 0.068, respectively. MgZnCaY MG coating has a higher hardness (8.64 ± 0.01 GPa) and Young's modulus (144.67 ± 1.57 GPa) than MgZnCaGd MG coating (4.90 ± 1.86 GPa, 110.4 ± 23.2 GPa). The MgZnCaY composite-coated artificial ligament has 49.02 MPa and 18.54% elongation at break, compared to 49.86 MPa and 15.19% for the MgZnCaGd coating. The results of the mechanical test shows that the coated composite artificial ligament allows for greater fracture elongation and appropriate stiffness during the stretching process. Because of the formation of Y2O3, which can strengthen the interfacial bonding strength between the adhesive layer and the ligament matrix, increase the adherence of oxides, and reduce the likelihood of oxide delamination, artificial ligaments coated with MgZnGaY also perform exceptionally well mechanically. The current research findings provide new insights for the design of composite artificial ligaments and present promising materials for applications in the field of artificial ligaments.
期刊介绍:
The Journal of Magnesium and Alloys serves as a global platform for both theoretical and experimental studies in magnesium science and engineering. It welcomes submissions investigating various scientific and engineering factors impacting the metallurgy, processing, microstructure, properties, and applications of magnesium and alloys. The journal covers all aspects of magnesium and alloy research, including raw materials, alloy casting, extrusion and deformation, corrosion and surface treatment, joining and machining, simulation and modeling, microstructure evolution and mechanical properties, new alloy development, magnesium-based composites, bio-materials and energy materials, applications, and recycling.