Study on the Tribological Behavior and the Interaction between Friction and Oxidation of Graphite Reinforced by Impregnated Phosphate at High Temperatures

doi:10.3390/ma16093517

IMR OpenIR

	Study on the Tribological Behavior and the Interaction between Friction and Oxidation of Graphite Reinforced by Impregnated Phosphate at High Temperatures
	Cheng, Hao 1,2; Gao, Siyang 1,2; Duan, Deli 1,2; Yang, Shuai 1,2; Xue, Weihai 1,2; Wu, Bi 1,2; Zhu, Zhenguo 1,2
通讯作者	Gao, Siyang(sygao@imr.ac.cn) ; Duan, Deli(duandl@imr.ac.cn)
	2023-05-04
发表期刊	MATERIALS
卷号	16 期号:9 页码:19
摘要	The stability of the graphite seal device is a key factor for the normal operation of aero engines. However, conventional graphite exhibits poor comprehensive performance due to its porous structure, which limits its application at high temperatures. Therefore, in this paper, phosphate was used to impregnated graphite pores, and the interaction between the friction, wear, and oxidation of phosphate-impregnated graphite against superalloy at high temperatures was studied through pin-on-disk friction tests. The results revealed that the coefficient of friction (COF) of matrix graphite fluctuated greatly, from 0.07 to 0.17, in the range of 100 degrees C to 500 degrees C, while the COF of impregnated graphite was stable, at around 0.13, from 100 degrees C to 500 degrees C. The wear rates of the two types of graphite were close from 20 degrees C to 300 degrees C, while the wear rate of the impregnated graphite was significantly lower than that of the matrix graphite at higher temperatures, from 400 degrees C and 500 degrees C. The reason was that the impregnated phosphate reacted with graphite at a high temperature, forming the inert site which helped to inhibit the oxidation and maintain the mechanical properties of the impregnated graphite at high temperatures. In addition, the impregnated graphite could maintain better integrity of the contact surface and reduce the inclusion of large hard metal oxides, thus effectively reducing the abrasive wear of the disk. Therefore, the wear depth of the superalloy disk samples with impregnated graphite was significantly lower than that of the matrix graphite. The results promote the application of phosphate-impregnated graphite under the high temperature conditions of aero engines.
关键词	impregnated graphite zinc phosphate high-temperature wear oxidation inert site
资助者	Liaoning Key Laboratory of Aero Engine Material Tribology
DOI	10.3390/ma16093517
收录类别	SCI
语种	英语
资助项目	Liaoning Key Laboratory of Aero Engine Material Tribology
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000987661400001
出版者	MDPI
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/177916
专题	中国科学院金属研究所
通讯作者	Gao, Siyang; Duan, Deli
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Hao,Gao, Siyang,Duan, Deli,et al. Study on the Tribological Behavior and the Interaction between Friction and Oxidation of Graphite Reinforced by Impregnated Phosphate at High Temperatures[J]. MATERIALS,2023,16(9):19.
APA	Cheng, Hao.,Gao, Siyang.,Duan, Deli.,Yang, Shuai.,Xue, Weihai.,...&Zhu, Zhenguo.(2023).Study on the Tribological Behavior and the Interaction between Friction and Oxidation of Graphite Reinforced by Impregnated Phosphate at High Temperatures.MATERIALS,16(9),19.
MLA	Cheng, Hao,et al."Study on the Tribological Behavior and the Interaction between Friction and Oxidation of Graphite Reinforced by Impregnated Phosphate at High Temperatures".MATERIALS 16.9(2023):19.