Spark Plasma Sintering of Nano Silicon Carbide Reinforced Alumina Ceramic Composites

M. Gök
{"title":"Spark Plasma Sintering of Nano Silicon Carbide Reinforced Alumina Ceramic Composites","authors":"M. Gök","doi":"10.26701/EMS.841961","DOIUrl":null,"url":null,"abstract":"At this point, it is reported that the amount, size, morphology and distribution of SiC phase added into the alumina matrix has a great effect on the mechanical properties of Al 2 O 3 [11]. Razavi et al. [10] produced the Al 2 O 3 -SiC composite ceramics by using spark plasma sintering (SPS) method at temperatures of 1600 °C for 10 min holding time and they measured the hardness and fracture toughness values of the monolithic Al 2 O 3 as 1387 Hv and 250.4 MPa, respectively. Researchers showed that hardness of the composite containing 20 wt. % Abstract Although Al 2 O 3 has been commercially preferred material, it cannot be used in applications subject to variable and sudden loads due to its low fracture toughness. In this study, as the primary purpose, nano-SiC particles were used as reinforcement phase to improve the fracture toughness of the Al 2 O 3 ceramic. Ultrasonic dispersion was used to ensure good dispersion of the nano reinforcement phase in the matrix. Production was carried out by spark plasma sintering method at temperatures of 1325 °C for 5 min under 40 MPa pressure and vacuum atmosphere. Densification behavior, density, microstructure, phase analysis, hardness and fracture toughness of the sintered Al 2 O 3 /nano-SiC composites were investigated. The highest hardness and fracture toughness of 22.83 GPa and 6.09 MPa·m 1/2 were achieved, respectively.","PeriodicalId":373904,"journal":{"name":"European Mechanical Science","volume":"98 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Mechanical Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.26701/EMS.841961","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2

Abstract

At this point, it is reported that the amount, size, morphology and distribution of SiC phase added into the alumina matrix has a great effect on the mechanical properties of Al 2 O 3 [11]. Razavi et al. [10] produced the Al 2 O 3 -SiC composite ceramics by using spark plasma sintering (SPS) method at temperatures of 1600 °C for 10 min holding time and they measured the hardness and fracture toughness values of the monolithic Al 2 O 3 as 1387 Hv and 250.4 MPa, respectively. Researchers showed that hardness of the composite containing 20 wt. % Abstract Although Al 2 O 3 has been commercially preferred material, it cannot be used in applications subject to variable and sudden loads due to its low fracture toughness. In this study, as the primary purpose, nano-SiC particles were used as reinforcement phase to improve the fracture toughness of the Al 2 O 3 ceramic. Ultrasonic dispersion was used to ensure good dispersion of the nano reinforcement phase in the matrix. Production was carried out by spark plasma sintering method at temperatures of 1325 °C for 5 min under 40 MPa pressure and vacuum atmosphere. Densification behavior, density, microstructure, phase analysis, hardness and fracture toughness of the sintered Al 2 O 3 /nano-SiC composites were investigated. The highest hardness and fracture toughness of 22.83 GPa and 6.09 MPa·m 1/2 were achieved, respectively.
纳米碳化硅增强氧化铝陶瓷复合材料的放电等离子烧结
至此,有报道称,在氧化铝基体中加入SiC相的数量、尺寸、形貌和分布对al2o3的力学性能有很大影响[11]。Razavi等[10]采用火花等离子烧结(SPS)法制备了al 2o3 -SiC复合陶瓷,温度为1600℃,保温时间为10 min,测得单片al 2o3的硬度为1387 Hv,断裂韧性为250.4 MPa。摘要虽然al2o3已成为商业上的首选材料,但由于其低断裂韧性,它不能用于受可变和突然载荷影响的应用。在本研究中,以纳米sic颗粒作为增强相来提高Al 2o3陶瓷的断裂韧性为主要目的。采用超声分散技术保证纳米增强相在基体中的良好分散。采用火花等离子烧结法,在1325℃温度下,在40mpa压力和真空气氛下烧结5min。研究了烧结al2o3 /纳米sic复合材料的致密化行为、密度、显微组织、相分析、硬度和断裂韧性。硬度和断裂韧性最高,分别为22.83 GPa和6.09 MPa·m /2。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信