{"title":"等离子氮化时间对化学镍-硼还原石墨烯氧化物（Ni-B-rGO）纳米复合涂层摩擦学和力学性能的影响","authors":"Zainab Wetwet, Farzad Mahboubi","doi":"10.1007/s12666-024-03262-7","DOIUrl":null,"url":null,"abstract":"<p>In this research, the effect of plasma nitriding (PN) time on wear properties and hardness of Ni–B-20.5rGO electroless composite coatings was investigated. The PN process was performed in three different times (60, 120 and 180 min) at 400 °C under N<sub>2</sub>-H<sub>2</sub> atmosphere on AISI 4140 steel. The results showed that adding 20.5 mg/L of rGO to the coating composition transformed its structure from an amorphous state to a quasi-crystalline. It also increased the hardness and improved the wear resistance of the coating. In contrast with heat treatment, PN significantly changes the surface morphology of electroless Ni–B coatings. Moreover, plasma nitriding affected the grain size and reduced the boron content due to the formation of hBN phase. NiB/20.5G/120PN sample had the highest hardness (1496 HV<sub>0.1</sub>) and wear resistance (0.24 × 10<sup>−9</sup> kg/N.m). It also showed a low friction coefficient and the most uniform crack-free worn surface.</p>","PeriodicalId":23224,"journal":{"name":"Transactions of The Indian Institute of Metals","volume":null,"pages":null},"PeriodicalIF":1.6000,"publicationDate":"2024-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The Effect of Plasma Nitriding Time on the Tribological and Mechanical Properties of Electroless Nickel–Boron-Reduced Graphene Oxide (Ni–B-rGO) Nano-Composite Coatings\",\"authors\":\"Zainab Wetwet, Farzad Mahboubi\",\"doi\":\"10.1007/s12666-024-03262-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>In this research, the effect of plasma nitriding (PN) time on wear properties and hardness of Ni–B-20.5rGO electroless composite coatings was investigated. The PN process was performed in three different times (60, 120 and 180 min) at 400 °C under N<sub>2</sub>-H<sub>2</sub> atmosphere on AISI 4140 steel. The results showed that adding 20.5 mg/L of rGO to the coating composition transformed its structure from an amorphous state to a quasi-crystalline. It also increased the hardness and improved the wear resistance of the coating. In contrast with heat treatment, PN significantly changes the surface morphology of electroless Ni–B coatings. Moreover, plasma nitriding affected the grain size and reduced the boron content due to the formation of hBN phase. NiB/20.5G/120PN sample had the highest hardness (1496 HV<sub>0.1</sub>) and wear resistance (0.24 × 10<sup>−9</sup> kg/N.m). It also showed a low friction coefficient and the most uniform crack-free worn surface.</p>\",\"PeriodicalId\":23224,\"journal\":{\"name\":\"Transactions of The Indian Institute of Metals\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2024-06-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Transactions of The Indian Institute of Metals\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1007/s12666-024-03262-7\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"Materials Science\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transactions of The Indian Institute of Metals","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s12666-024-03262-7","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Materials Science","Score":null,"Total":0}
The Effect of Plasma Nitriding Time on the Tribological and Mechanical Properties of Electroless Nickel–Boron-Reduced Graphene Oxide (Ni–B-rGO) Nano-Composite Coatings
In this research, the effect of plasma nitriding (PN) time on wear properties and hardness of Ni–B-20.5rGO electroless composite coatings was investigated. The PN process was performed in three different times (60, 120 and 180 min) at 400 °C under N2-H2 atmosphere on AISI 4140 steel. The results showed that adding 20.5 mg/L of rGO to the coating composition transformed its structure from an amorphous state to a quasi-crystalline. It also increased the hardness and improved the wear resistance of the coating. In contrast with heat treatment, PN significantly changes the surface morphology of electroless Ni–B coatings. Moreover, plasma nitriding affected the grain size and reduced the boron content due to the formation of hBN phase. NiB/20.5G/120PN sample had the highest hardness (1496 HV0.1) and wear resistance (0.24 × 10−9 kg/N.m). It also showed a low friction coefficient and the most uniform crack-free worn surface.
期刊介绍：
Transactions of the Indian Institute of Metals publishes original research articles and reviews on ferrous and non-ferrous process metallurgy, structural and functional materials development, physical, chemical and mechanical metallurgy, welding science and technology, metal forming, particulate technologies, surface engineering, characterization of materials, thermodynamics and kinetics, materials modelling and other allied branches of Metallurgy and Materials Engineering.
Transactions of the Indian Institute of Metals also serves as a forum for rapid publication of recent advances in all the branches of Metallurgy and Materials Engineering. The technical content of the journal is scrutinized by the Editorial Board composed of experts from various disciplines of Metallurgy and Materials Engineering. Editorial Advisory Board provides valuable advice on technical matters related to the publication of Transactions.
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