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对磨削加工后的纳米结构陶瓷涂层进行磨损性能试验.磨损试验首先对纳米结构陶瓷涂层Al2O3/13TiO2的圆柱形工件进行外圆磨削加工,然后将各种不同条件下磨削加工后的圆柱工件装夹到立式铣床的主轴上,进行定速、定载荷的磨损性能试验.磨损性能试验时,圆柱工件在旋转的同时与往复运动的长方形氮化硅陶瓷棒进行滑擦,在其圆柱表面形成磨损沟槽.使用扫描电子显微镜和表面轮廓仪对纳米陶瓷涂层的磨损沟槽进行观察与评定,并与传统陶瓷涂层的磨损沟槽进行对比与分析.为进一步揭示纳米陶瓷涂层的磨损机理,使用有限元法对接触区的应力场进行模拟,并分析纳米陶瓷涂层裂纹的形成与扩展.讨论了磨削工艺参数以及涂层晶粒大小对纳米结构陶瓷涂层耐磨损性能的影响.
The abrasion test of the nanostructured ceramic coating after grinding was carried out.The wear test was carried out on the cylindrical workpiece of nanostructured ceramic coating Al2O3 / 13TiO2 by cylindrical grinding, and then grinding under different conditions Of the cylindrical workpiece is clamped to the spindle of a vertical milling machine for constant speed, constant load of the wear performance test wear performance test, the cylindrical workpiece while rotating with reciprocating rectangular silicon carbide ceramic rod sliding in the The wear grooves were formed on the cylindrical surface.The wear grooves of the nano-ceramic coating were observed and evaluated by scanning electron microscope and surface profiler, and compared with the wear grooves of the traditional ceramic coating.To further reveal the nano-ceramic The wear mechanism of the coating and the finite element method were used to simulate the stress field in the contact zone and to analyze the formation and expansion of the cracks in the nano-ceramic coating.The parameters of the grinding process and the influence of the coating grain size on the nano-ceramic coating resistance Impact of wear properties.