Effect of Square Texture on Tribological Properties of Nano-SiO2/POB-PTFE Composites

doi:10.1088/1742-6596/2160/1/012013

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	Effect of Square Texture on Tribological Properties of Nano-SiO2/POB-PTFE Composites
	Yang, Dongya; Xue, Wei; Xiong, Xinwen; Li, Weitao; Sun, Rongtuo; Li, Jiajun
	2022-01-10
会议日期	November 26, 2021 - November 28, 2021
会议地点	Nanjing, Virtual, China
关键词	Engine pistons Friction Piston rings Scanning electron microscopy Silica Silicon Stirling engines Tribology Wear of materials Wear resistance Composite transfer film Contact surface Design problems In situ observations Laser marking machines Nano SiO 2 Piston rings Seal design Tribological properties Wear tester
卷号	2160
期号	1
DOI	10.1088/1742-6596/2160/1/012013
英文摘要	In order to study the seal design problem of piston rings in Stirling engine, on the basis of filling PTFE with Nano-SiO2 and POB and preparing the GCr15 contact surface with square texture by HM20-I laser marking machine, experiments were carried out on LSR-2M wear tester by indirect weighing and in-situ observation methods. Optical microscope (OM) and scanning electron microscope (SEM) were used to observe the evolution of Nano-SiO2/POB-PTFE composites' transfer film on contact surface. The results showed that the square texture would shorten the running-in and transitionary periods of the composites' tribological process, accelerate into the stationary period. The formation process of the composites' transfer film on the square textured contact surface was also different from smooth contact surface. Although the square texture would increase wear rate, its ability to store wear debris is more conducive to the formation of reliable, uniform and continuous transfer film with a same friction direction. Obviously, reasonable design of surface texture can effectively improve the wear resistance of sealing parts made of filling modified PTFE composites, thus providing theoretical guidance for the seal design of Stirling engine piston ring. © 2022 Institute of Physics Publishing. All rights reserved.
会议录	Journal of Physics: Conference Series
会议录出版者	IOP Publishing Ltd
语种	英语
ISSN号	1742-6588
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158072]
专题	机电工程学院
作者单位	School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Yang, Dongya,Xue, Wei,Xiong, Xinwen,et al. Effect of Square Texture on Tribological Properties of Nano-SiO2/POB-PTFE Composites[C]. 见:. Nanjing, Virtual, China. November 26, 2021 - November 28, 2021.