Effects of particle size, particle loading and sliding distance on the friction and wear properties of cenosphere particulate filled vinylester composites
Effects of particle size, particle loading and sliding distance on the friction and wear properties of cenosphere particulate filled vinylester composites
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DOI：
10.1016/j.matdes.2013.03.071
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发表时间：
2013-10-01
影响因子：
8.4
通讯作者：
Thakur, Sunil
中科院分区：
文献类型：
--
作者：
Chauhan, S. R.;Thakur, Sunil
在销-盘摩擦磨损试验机上研究了颗粒尺寸、颗粒载荷和滑动距离对乙烯基酯复合材料与淬硬钢摩擦磨损性能的影响。重点研究了在10 N、70 N两种不同法向载荷和1.9 m/s、5.7 m/s滑动速度下，磨损率和摩擦系数随滑动距离（5000-25,000 m）等参数的变化规律。在实验室中制备了三种不同尺寸的空心微珠颗粒（2 μ m、900 nm和400 nm）用于制备颗粒填充的乙烯基酯复合材料。在万能材料试验机上测定了空心微珠颗粒填充乙烯基酯复合材料的拉伸强度、弯曲强度和压缩强度。结果表明，亚微米级的空心微珠颗粒作为填料对提高复合材料的力学性能有显著的作用。还发现，所有乙烯基酯复合材料的比磨损率随滑动距离的增加而减小，并在一定时间后达到近似稳态值。据观察，在稳态区域，乙烯基酯复合材料的比磨损率变化不大。扫描电子显微镜（SEM）分析也已进行，以确定乙烯基酯复合材料的磨损表面的磨损机制。(c)2013爱思唯尔有限公司保留所有权利。
The present investigations evaluate the effects of particle size, particle loading and sliding distance on the friction and wear behavior of vinylester composites sliding against hardened ground steel on a pin-on-disc wear testing machine. The emphasis are given on the wear rate and coefficient of friction as a function of parameters such as sliding distance (5000-25,000 m) at two different applied normal loads of 10 N, 70 N and at sliding speeds of 1.9 m/s and 5.7 m/s. Three distinct sizes of cenosphere particles (2 mu m, 900 nm and 400 nm) were prepared in the laboratory for preparing the particulates filled vinylester composites. The tensile strength, flexural and compressive strength of the cenosphere particulate filled vinylester composites were determined on a universal materials testing machine. It was found that the submicron size cenosphere particles as fillers contributed significantly to improve the mechanical properties. It was also found that the specific wear rate for all the vinylester composites decreases with sliding distance and after certain duration attains approximately a steady state value. It was observed that in the steady state region, the specific wear rates of vinylester composites vary only marginally. Scanning Electron Microscopy (SEM) analysis also has been carried to identify the wear mechanisms for the worn surfaces of vinylester composites. (c) 2013 Elsevier Ltd. All rights reserved.