纯钛材与大变形纯钛材微弧氧化膜层的力学性能研究

发布时间：2018-02-23 18:07

本文关键词： 大变形纯钛材微弧氧化表面形貌膜-基结合力滚动磨损　出处：《稀有金属材料与工程》2017年02期 　论文类型：期刊论文

【摘要】：采用微弧氧化法在纯钛材及大变形纯钛材表面制备了含钙、磷的多孔氧化膜层,研究膜层的微观形貌、硬度、膜基结合力、滚动摩擦磨损性能等性能,探讨钛基材组织细化对其膜层结构及力学性能的影响。结果表明:与纯钛材微弧氧化膜层相比,大变形纯钛材微弧氧化膜层表面微纳米尺度的孔洞更多,孔隙率更高(10.84%vs.9.68%),孔洞孔径更小(8.67μm vs.9.68μm),表面更平坦,锐钦矿相含量更高(43.13%vs.37.74%),膜-基结合能力更强(17 N vs.8N),摩擦系数较低(0.338 vs.0.358),耐磨性能更优,以上的膜层结构及力学性能的改善归因于其钛基材大变形化提高了晶体缺陷。
[Abstract]:Porous oxide films containing calcium and phosphorus were prepared on the surface of pure titanium and large deformation pure titanium by micro-arc oxidation method. The microstructure, hardness, adhesion of film base, rolling friction and wear properties of the film were studied. The effect of microstructure refinement on the structure and mechanical properties of titanium substrate was investigated. The results showed that there were more pores on the surface of large deformation pure titanium micro-arc oxide film than pure titanium micro-arc oxide film. A higher porosity of 10.84 vs.9.68, a smaller pore diameter of 8.67 渭 m vs.9.68 渭 m, a flatter surface, a higher content of sharp minerals, a higher content of vs.37.74, a stronger membrane / substrate binding capacity of 17 N vs.8N, a lower friction coefficient of 0.338 vs.0.358 and a better wear resistance. The improvement of the structure and mechanical properties of the film is attributed to the large deformation of the titanium substrate and the increase of the crystal defect.
【作者单位】：江苏大学先进制造与现代装备技术工程研究院;江苏大学微纳米科学技术研究中心;常州大学;
【基金】：江苏省高校自然基金重大项目(11KJA430004);江苏省高校自然基金(12KJD460002) 江苏省优势学科资助
【分类号】：TG174.4

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