{"title":"硬陶瓷的划痕试验:粘弹性的表现","authors":"W. Brostow, N. Hnatchuk, J. Prazuch","doi":"10.5539/JMSR.V8N3P18","DOIUrl":null,"url":null,"abstract":"Viscoelasticity is studied extensively in polymers and polymer-based composites-but hardly in ceramics. We have studied viscoelastic behavior of three ceramics as manifested in scratching tests: 98 weight % B4C + 2% hexagonal boron nitride (h-BN), 92% B4C and 8% h-BN, 91% B4C + 5% CrSi2 + 2% h-BN. Clear viscoelastic recovery (the groove depth becoming shallower within 2 minutes) is seen in all three materials, the recovery in each case of at least 90%. Taking into account viscoelasticity and introducing appropriate additives, one could significantly improve the scratch resistance of the boron carbides, and possibly of other hard ceramics as well.","PeriodicalId":16111,"journal":{"name":"Journal of Materials Science Research","volume":"74 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2019-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Scratch Testing of Hard Ceramics: Manifestation of Viscoelasticity\",\"authors\":\"W. Brostow, N. Hnatchuk, J. Prazuch\",\"doi\":\"10.5539/JMSR.V8N3P18\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Viscoelasticity is studied extensively in polymers and polymer-based composites-but hardly in ceramics. We have studied viscoelastic behavior of three ceramics as manifested in scratching tests: 98 weight % B4C + 2% hexagonal boron nitride (h-BN), 92% B4C and 8% h-BN, 91% B4C + 5% CrSi2 + 2% h-BN. Clear viscoelastic recovery (the groove depth becoming shallower within 2 minutes) is seen in all three materials, the recovery in each case of at least 90%. Taking into account viscoelasticity and introducing appropriate additives, one could significantly improve the scratch resistance of the boron carbides, and possibly of other hard ceramics as well.\",\"PeriodicalId\":16111,\"journal\":{\"name\":\"Journal of Materials Science Research\",\"volume\":\"74 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-07-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Science Research\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.5539/JMSR.V8N3P18\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science Research","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5539/JMSR.V8N3P18","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Scratch Testing of Hard Ceramics: Manifestation of Viscoelasticity
Viscoelasticity is studied extensively in polymers and polymer-based composites-but hardly in ceramics. We have studied viscoelastic behavior of three ceramics as manifested in scratching tests: 98 weight % B4C + 2% hexagonal boron nitride (h-BN), 92% B4C and 8% h-BN, 91% B4C + 5% CrSi2 + 2% h-BN. Clear viscoelastic recovery (the groove depth becoming shallower within 2 minutes) is seen in all three materials, the recovery in each case of at least 90%. Taking into account viscoelasticity and introducing appropriate additives, one could significantly improve the scratch resistance of the boron carbides, and possibly of other hard ceramics as well.
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