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Article(id=1322943978722697284, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322943149844345666, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20210534, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1625068800000, receivedDateStr=2021-07-01, revisedDate=1631894400000, revisedDateStr=2021-09-18, acceptedDate=null, acceptedDateStr=null, onlineDate=1793344023637, onlineDateStr=2026-10-30, pubDate=1639929600000, pubDateStr=2021-12-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793344023637, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793344023637, creator=13701087609, updateTime=1793344023637, updator=13701087609, issue=Issue{id=1322943149844345666, tenantId=1146029695717560320, journalId=1263187385517883426, year='2021', volume='49', issue='12', pageStart='2549', pageEnd='2816', issueExtLink='null', onlineDate='null', pubDate='1639929600000', pubDateStr='2021-12-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343826018, creator='13701087609', updateTime=1793345974749, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322952162350859029, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322943149844345666, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322952162350859030, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1322943149844345666, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=2556, endPage=2562, ext={EN=ArticleExt(id=1322943978928218181, articleId=1322943978722697284, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Effect of MgSiN2-Y2O3 Sintering Aids on Mechanical Properties and Thermal Conductivity of Si3N4 Ceramics, columnId=1322943189916725340, journalTitle=Journal of the Chinese Ceramic Society, columnName=Special Topic on Engineering Ceramic Material, runingTitle=null, highlight=null, articleAbstract=

Si3N4 ceramics were prepared via gas pressure sintering under nitrogen pressure of 1.0 MPa at 1 850℃ for 3 h with Y2O3 and MgSiN2 as sintering aids. The effects of MgSiN2/Y2O3 mole ratio and their total amount on the porosity, microstructure, mechanical properties and thermal conductivity of Si3N4 ceramics were investigated. The results show that the growth of rod-like β-Si3N4 grains was more sufficient and the growth of abnormal grain decreased with the increase of Y2O3 content at the constant total content of MgSiN2 and Y2O3. Si3N4 ceramics with the optimal properties were prepared at a molar ratio of MgSiN2:Y2O3 of 5∶2 and the total amount of sintering aids of 10.5%, having the bending strength and thermal conductivity of 510 MPa and 67.01 W·m-1·K-1, respectively.

, authors=Cong LI1, Bo ZHANG1, Jiabin HU1, Shenghe WANG2, Zhongqi SHI1, authorsList=Cong LI, Bo ZHANG, Jiabin HU, Shenghe WANG, Zhongqi SHI, authorCompany=null, correspAuthors=Zhongqi SHI, authorNote=

LI Cong(1995-), male, Master candidate. E-mail:

, correspAuthorsNote=
SHI Zhongqi (1982-), male, Ph.D., Professor. E-mail:
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以MgSiN2和Y2O3为烧结助剂，通过气压烧结法在氮气压力1.0 MPa、1 850℃和保温3 h条件下制备出Si3N4陶瓷。研究了MgSiN2/Y2O3比例及添加量对Si3N4陶瓷气孔率、显微结构、力学性能和热导率的影响。结果表明：当MgSiN2和Y2O3复合烧结助剂总含量不变时，随着Y2O3含量的增加，β-Si3N4棒状晶的发育更为充分且异常长大情况明显减少。当MgSiN2：Y2O3的摩尔比为5∶2、烧结助剂总添加量为10.5%（摩尔分数）时，制备的Si3N4陶瓷综合性能最优，其抗弯强度为510 MPa、热导率为67.01 W·m-1·K-1。

, authors=李聪1, 张博1, 胡加斌1, 汪胜和2, 史忠旗1, authorsList=李聪, 张博, 胡加斌, 汪胜和, 史忠旗, authorCompany=null, correspAuthors=史忠旗, authorNote=

李聪（1995—），男，硕士研究生。

, correspAuthorsNote=
史忠旗（1982—），男，博士，教授。
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LI Cong(1995-), male, Master candidate. E-mail:

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LI Cong(1995-), male, Master candidate. E-mail:

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李聪（1995—），男，硕士研究生。

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李聪（1995—），男，硕士研究生。

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MgSiN2-Y2O3复合烧结助剂对Si3N4陶瓷力学及导热性能的影响
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李聪 1 , 张博 1 , 胡加斌 1 , 汪胜和 2 , 史忠旗 1
硅酸盐学报 | 工程陶瓷材料专题 2021,49(12): 2556-2562
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硅酸盐学报 |工程陶瓷材料专题 2021 , 49 (12) : 2556 -2562
MgSiN2-Y2O3复合烧结助剂对Si3N4陶瓷力学及导热性能的影响
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李聪1 , 张博1, 胡加斌1, 汪胜和2, 史忠旗1
作者信息
  • 1．西安交通大学材料科学与工程学院，金属材料强度国家重点实验室，西安 710049
  • 2．国网安徽省电力有限公司，合肥 230061
通讯作者:
史忠旗（1982—），男，博士，教授。
作者简介:

李聪（1995—），男，硕士研究生。

Effect of MgSiN2-Y2O3 Sintering Aids on Mechanical Properties and Thermal Conductivity of Si3N4 Ceramics
Cong LI1 , Bo ZHANG1, Jiabin HU1, Shenghe WANG2, Zhongqi SHI1
Affiliations
  • 1.State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China
  • 2.State Grid Anhui Electric Power Co., LTD, Hefei 230061, China
    • Corresponding Author:
    SHI Zhongqi (1982-), male, Ph.D., Professor. E-mail:

    LI Cong(1995-), male, Master candidate. E-mail:

出版时间: 2021-12-20 doi: 10.14062/j.issn.0454-5648.20210534
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以MgSiN2和Y2O3为烧结助剂，通过气压烧结法在氮气压力1.0 MPa、1 850℃和保温3 h条件下制备出Si3N4陶瓷。研究了MgSiN2/Y2O3比例及添加量对Si3N4陶瓷气孔率、显微结构、力学性能和热导率的影响。结果表明：当MgSiN2和Y2O3复合烧结助剂总含量不变时，随着Y2O3含量的增加，β-Si3N4棒状晶的发育更为充分且异常长大情况明显减少。当MgSiN2：Y2O3的摩尔比为5∶2、烧结助剂总添加量为10.5%（摩尔分数）时，制备的Si3N4陶瓷综合性能最优，其抗弯强度为510 MPa、热导率为67.01 W·m-1·K-1。

氮化硅  /  烧结助剂  /  抗弯强度  /  热导率

Si3N4 ceramics were prepared via gas pressure sintering under nitrogen pressure of 1.0 MPa at 1 850℃ for 3 h with Y2O3 and MgSiN2 as sintering aids. The effects of MgSiN2/Y2O3 mole ratio and their total amount on the porosity, microstructure, mechanical properties and thermal conductivity of Si3N4 ceramics were investigated. The results show that the growth of rod-like β-Si3N4 grains was more sufficient and the growth of abnormal grain decreased with the increase of Y2O3 content at the constant total content of MgSiN2 and Y2O3. Si3N4 ceramics with the optimal properties were prepared at a molar ratio of MgSiN2:Y2O3 of 5∶2 and the total amount of sintering aids of 10.5%, having the bending strength and thermal conductivity of 510 MPa and 67.01 W·m-1·K-1, respectively.

silicon nitride  /  sintering aids  /  fracture strength  /  thermal conductivity
李聪, 张博, 胡加斌, 汪胜和, 史忠旗. MgSiN2-Y2O3复合烧结助剂对Si3N4陶瓷力学及导热性能的影响. 硅酸盐学报, 2021 , 49 (12) : 2556 -2562 . DOI: 10.14062/j.issn.0454-5648.20210534
Cong LI, Bo ZHANG, Jiabin HU, Shenghe WANG, Zhongqi SHI. Effect of MgSiN2-Y2O3 Sintering Aids on Mechanical Properties and Thermal Conductivity of Si3N4 Ceramics[J]. Journal of the Chinese Ceramic Society, 2021 , 49 (12) : 2556 -2562 . DOI: 10.14062/j.issn.0454-5648.20210534
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  • 国家重点研发计划项目(2018YFB0905600)
  • 国家电网有限公司总部科技项目(SGAH0000KJJS1900437)
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doi: 10.14062/j.issn.0454-5648.20210534
  • 接收时间：2021-07-01
  • 首发时间：2026-10-30
  • 出版时间：2021-12-20
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  • 收稿日期：2021-07-01
  • 修回日期：2021-09-18
基金
国家重点研发计划项目(2018YFB0905600)
国家电网有限公司总部科技项目(SGAH0000KJJS1900437)
作者信息
    1．西安交通大学材料科学与工程学院，金属材料强度国家重点实验室，西安 710049
    2．国网安徽省电力有限公司，合肥 230061

通讯作者:

史忠旗（1982—），男，博士，教授。
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https://castjournals.cast.org.cn/joweb/gsyxb/CN/10.14062/j.issn.0454-5648.20210534
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2种不同金属材料的力学参数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
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