{"title":"载荷对含有 N-GQD 的 Si3N4 基复合材料摩擦学特性的影响","authors":"Wei Chen, Yucheng Ma, Xingyu Liu, Enguang Xu, Wenlong Yang, Junhong Jia, Rui Lou, Chaolong Zhu, Chenjing Wu, Ziqiang Zhao","doi":"10.1108/ilt-05-2024-0161","DOIUrl":null,"url":null,"abstract":"<h3>Purpose</h3>\n<p>The purpose of this paper is to improve the mechanical and tribological properties of Si<sub>3</sub>N<sub>4</sub> ceramics and to make the application of Si<sub>3</sub>N<sub>4</sub> ceramics as tribological materials more extensive.</p><!--/ Abstract__block -->\n<h3>Design/methodology/approach</h3>\n<p>Si<sub>3</sub>N<sub>4</sub>-based composite ceramics (SN-2L) containing nitrogen-doped graphene quantum dots (N-GQDs) were prepared by hot press sintering process through adding 2 Wt.% nanolignin as precursor to the Si<sub>3</sub>N<sub>4</sub> matrix, and the dry friction and wear behaviors of Si<sub>3</sub>N<sub>4</sub>-based composite against TC4 disc were performed at the different loads by using pin-on-disc tester.</p><!--/ Abstract__block -->\n<h3>Findings</h3>\n<p>The friction coefficients and wear rates of SN-2L composite against TC4 were significantly lower than those of the single-phase Si<sub>3</sub>N<sub>4</sub> against TC4 at the load range from 15 to 45 N. At higher load of 45 N, SN-2L/TC4 pair presented the lowest friction coefficient of 0.25, and the wear rates of the pins and discs were as low as 1.76 × 10<sup>−6</sup> and 2.59 × 10<sup>−4</sup>mm<sup>3</sup>/N·m. The low friction and wear behavior could be attributed to the detachment of N-GQDs from the ceramic matrix to the worn surface at the load of 30 N or higher, and then an effective lubricating film containing N-GQDs, SiO<sub>2</sub>, TiO<sub>2</sub> and Al<sub>2</sub>SiO<sub>5</sub> formed in the worn surface. While, at the same test condition, the friction coefficient of the single-phase Si<sub>3</sub>N<sub>4</sub> against TC4 was at a range from 0.45 to 0.58. The spalling and cracking morphology formed on the worn surface of single-phase Si3N4, and the wear mechanism was mainly dominated by adhesive and abrasive wear.</p><!--/ Abstract__block -->\n<h3>Originality/value</h3>\n<p>Overall, a high-performance green ceramic composite was prepared, and the composite had a good potential for application in engineering tribology fields (such as aerospace bearings).</p><!--/ Abstract__block -->\n<h3>Peer review</h3>\n<p>The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-05-2024-0161/</p><!--/ Abstract__block -->","PeriodicalId":13523,"journal":{"name":"Industrial Lubrication and Tribology","volume":null,"pages":null},"PeriodicalIF":1.5000,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of load on the tribological properties of Si3N4-based composite with N-GQDs\",\"authors\":\"Wei Chen, Yucheng Ma, Xingyu Liu, Enguang Xu, Wenlong Yang, Junhong Jia, Rui Lou, Chaolong Zhu, Chenjing Wu, Ziqiang Zhao\",\"doi\":\"10.1108/ilt-05-2024-0161\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3>Purpose</h3>\\n<p>The purpose of this paper is to improve the mechanical and tribological properties of Si<sub>3</sub>N<sub>4</sub> ceramics and to make the application of Si<sub>3</sub>N<sub>4</sub> ceramics as tribological materials more extensive.</p><!--/ Abstract__block -->\\n<h3>Design/methodology/approach</h3>\\n<p>Si<sub>3</sub>N<sub>4</sub>-based composite ceramics (SN-2L) containing nitrogen-doped graphene quantum dots (N-GQDs) were prepared by hot press sintering process through adding 2 Wt.% nanolignin as precursor to the Si<sub>3</sub>N<sub>4</sub> matrix, and the dry friction and wear behaviors of Si<sub>3</sub>N<sub>4</sub>-based composite against TC4 disc were performed at the different loads by using pin-on-disc tester.</p><!--/ Abstract__block -->\\n<h3>Findings</h3>\\n<p>The friction coefficients and wear rates of SN-2L composite against TC4 were significantly lower than those of the single-phase Si<sub>3</sub>N<sub>4</sub> against TC4 at the load range from 15 to 45 N. At higher load of 45 N, SN-2L/TC4 pair presented the lowest friction coefficient of 0.25, and the wear rates of the pins and discs were as low as 1.76 × 10<sup>−6</sup> and 2.59 × 10<sup>−4</sup>mm<sup>3</sup>/N·m. The low friction and wear behavior could be attributed to the detachment of N-GQDs from the ceramic matrix to the worn surface at the load of 30 N or higher, and then an effective lubricating film containing N-GQDs, SiO<sub>2</sub>, TiO<sub>2</sub> and Al<sub>2</sub>SiO<sub>5</sub> formed in the worn surface. While, at the same test condition, the friction coefficient of the single-phase Si<sub>3</sub>N<sub>4</sub> against TC4 was at a range from 0.45 to 0.58. The spalling and cracking morphology formed on the worn surface of single-phase Si3N4, and the wear mechanism was mainly dominated by adhesive and abrasive wear.</p><!--/ Abstract__block -->\\n<h3>Originality/value</h3>\\n<p>Overall, a high-performance green ceramic composite was prepared, and the composite had a good potential for application in engineering tribology fields (such as aerospace bearings).</p><!--/ Abstract__block -->\\n<h3>Peer review</h3>\\n<p>The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-05-2024-0161/</p><!--/ Abstract__block -->\",\"PeriodicalId\":13523,\"journal\":{\"name\":\"Industrial Lubrication and Tribology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2024-08-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Industrial Lubrication and Tribology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1108/ilt-05-2024-0161\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Industrial Lubrication and Tribology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1108/ilt-05-2024-0161","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
Effect of load on the tribological properties of Si3N4-based composite with N-GQDs
Purpose
The purpose of this paper is to improve the mechanical and tribological properties of Si3N4 ceramics and to make the application of Si3N4 ceramics as tribological materials more extensive.
Design/methodology/approach
Si3N4-based composite ceramics (SN-2L) containing nitrogen-doped graphene quantum dots (N-GQDs) were prepared by hot press sintering process through adding 2 Wt.% nanolignin as precursor to the Si3N4 matrix, and the dry friction and wear behaviors of Si3N4-based composite against TC4 disc were performed at the different loads by using pin-on-disc tester.
Findings
The friction coefficients and wear rates of SN-2L composite against TC4 were significantly lower than those of the single-phase Si3N4 against TC4 at the load range from 15 to 45 N. At higher load of 45 N, SN-2L/TC4 pair presented the lowest friction coefficient of 0.25, and the wear rates of the pins and discs were as low as 1.76 × 10−6 and 2.59 × 10−4mm3/N·m. The low friction and wear behavior could be attributed to the detachment of N-GQDs from the ceramic matrix to the worn surface at the load of 30 N or higher, and then an effective lubricating film containing N-GQDs, SiO2, TiO2 and Al2SiO5 formed in the worn surface. While, at the same test condition, the friction coefficient of the single-phase Si3N4 against TC4 was at a range from 0.45 to 0.58. The spalling and cracking morphology formed on the worn surface of single-phase Si3N4, and the wear mechanism was mainly dominated by adhesive and abrasive wear.
Originality/value
Overall, a high-performance green ceramic composite was prepared, and the composite had a good potential for application in engineering tribology fields (such as aerospace bearings).
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-05-2024-0161/
期刊介绍：
Industrial Lubrication and Tribology provides a broad coverage of the materials and techniques employed in tribology. It contains a firm technical news element which brings together and promotes best practice in the three disciplines of tribology, which comprise lubrication, wear and friction. ILT also follows the progress of research into advanced lubricants, bearings, seals, gears and related machinery parts, as well as materials selection. A double-blind peer review process involving the editor and other subject experts ensures the content''s validity and relevance.
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