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

文献类型：期刊论文

作者Cheng, Hao1,2; Gao, Siyang1,2; Duan, Deli1,2; Yang, Shuai1,2; Xue, Weihai1,2; Wu, Bi1,2; Zhu, Zhenguo1,2
刊名MATERIALS
出版日期2023-05-04
卷号16期号:9页码:19
关键词impregnated graphite zinc phosphate high-temperature wear oxidation inert site
DOI10.3390/ma16093517
通讯作者Gao, Siyang(sygao@imr.ac.cn) ; Duan, Deli(duandl@imr.ac.cn)
英文摘要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.
资助项目Liaoning Key Laboratory of Aero Engine Material Tribology
WOS研究方向Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
语种英语
WOS记录号WOS:000987661400001
出版者MDPI
资助机构Liaoning Key Laboratory of Aero Engine Material Tribology
源URL[http://ir.imr.ac.cn/handle/321006/177915]  
专题金属研究所_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.

入库方式： OAI收割

来源：金属研究所

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