【摘 要】
：
The fretting wear tests of eight kind of tribo-pairs were conducted in different temperatures (room temperature - RT and 90℃) water for tube/plate contact configuration. Three tube materials were sele
【机 构】
：
Tribology Research Institute, Southwest Jiaotong University, Chengdu 610031, China
【出 处】
：
第十一届全国表面工程大会暨第八届全国青年表面工程学术会议
论文部分内容阅读
The fretting wear tests of eight kind of tribo-pairs were conducted in different temperatures (room temperature - RT and 90℃) water for tube/plate contact configuration. Three tube materials were selected: 690 alloy, 800 alloy and shot peening 800 alloy. The plate specimens used in this investigation were 405 stainless steel, chrome plated 600 alloy, annealed 405 stainless steel and 06Cr13. The worn surfaces and cross-sectional morphologies were observed through scanning electron microscopy (SEM), energy dispersive X-ray (EDX), X-ray photoelectron spectroscopy (XPS) and electron probe microanalysis (EPMA). The results indicated that the main wear mechanisms of tubes were delamination and abrasive wear in water. The pits of shot peening 800 alloy stored wear particles and then no wear debris accumulated at the edge of wear scars. Compared to other plate materials, it was more obvious to find delamination cracks on worn 06Cr13 surface. Under 20 μm, the chrome film of chrome plated 600 alloy protected the contacting surface better than under 100μm. Once the chrome film broken and transferred on tubes, the wear changed from slight to severe due to exposed roughness surfaces. The XPS results showed that Cr2O3, NiO and Ni2O3 were the main oxide existence form of chrome and nickel.
其他文献
由于环保意识的不断提高,无铬钝化是今后发展的必然趋势,硅酸盐具有钝化成本低、钝化膜耐腐蚀性好、钝化液稳定性好、使用方便、无毒、无污染等优点,已经成为钝化研究的重要方向之一.本文通过单因素实验对硅酸盐蓝白钝化工艺参数进行了优化,通过5％CuSO4点滴测试和中性盐雾腐蚀测试,研究了钝化工艺参数对钝化膜外观和耐蚀性的影响,确定最佳工艺：80 mL/L混合溶液,该溶液由24g/L氟化钾、120g/L硅酸钠
Laser cladding Ni-based composite coating was fabricated on the surface of 42CrMo steel by using 6 kW fiber laser. By the addition of Mo and WC powder, a well-formed and crack-free laser cladding comp
Iron oxide nanoparticles (IONPs) have been usually surface-modified by organic molecules with abundant hydroxyl groups to improve their morphology, structure and crystallization. While the effect of t
Janus particle, defined as colloidal particle consisting of two surfaces of different chemistries and/or polarities, have attracted great attention because of their anisotropic wettabilities and optic
与血液直接接触的介入材料存在血液相容性不足等问题,研究发现通过材料表面改性方法,可以有效提高传统材料的抗凝血性能。研究发现,Ti-O系薄膜是一种具有良好的生物相容性的新型材料,将其沉积在血管支架等心血管材料的表面,可以有效提高其血液相容性。铜离子可有效催化血管内皮细胞释放NO,进而抑制血小板的激活与聚集,改善抗凝血性能。在氧化钛薄膜具有较好的抑制血小板粘附的基础上,在不锈钢和硅片基体上沉积Ti-(
The material transfer behaviors of Al-hBN coating and NiAl-hBN coating rubbed by Ti6Al4V blade at different linear speeds and single pass depths were studied with a high-speed rub tester. According to
轴向柱塞泵是当代液压系统中非常重要的动力源，因其具有极高的功率重量比，而广泛应用于航空、航天、石油化工、工程机械等领域。为提升其工作效率和可靠性及环境友好性，当前主要研究领域集中在为压力波动、泄漏、润滑和控制。相应动态模型由简单的1D单体动态模型逐渐向3D多体动态(MBD)模型发展，动态模型技术自身在发展，其在柱塞泵动态特性研究中应用的范围和作用也日益扩展，本文对该发展历程和未来应用前景进行了展望
High quality films can be deposited by quarter torus cathodic arc deposition filter which is a double sword because it can produce high ionization rate plasma as well as the disadvantage of low produc
电弧离子镀所制备薄膜中的大颗粒缺陷是研究热点之一，本文利用尘埃等离子体的理论，以Ti大颗粒为研究对象，对电弧离子镀中大颗粒空间传输过程中的受力进行了分析，主要包括重力、离子拖曳力、热泳力、电场力等4种类型，对其影响规律、作用大小以及综合表现进行了总结，为有效避免大颗粒在薄膜表面的沉积概率提出。本论文通过大颗粒空间传输特征的理论分析，对大颗粒传输过程中的空间受力进行了计算，解释了大颗粒在薄膜表面数目
The cathode spot is crucial to vacuum arc technology[1], the cathode spot theories has been widely studied. However, Relevant theories are not perfect. The arc behavior, such as the erosion format and