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Article(id=1319222580960146220, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319222570398888648, articleNumber=null, orderNo=null, doi=10.14062/j.issn.0454-5648.20220871, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1665676800000, receivedDateStr=2022-10-14, revisedDate=1667577600000, revisedDateStr=2022-11-05, acceptedDate=null, acceptedDateStr=null, onlineDate=1792456773270, onlineDateStr=2026-10-20, pubDate=1679241600000, pubDateStr=2023-03-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792456773270, onlineIssueDateStr=2026-10-20, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792456773270, creator=13701087609, updateTime=1792456773270, updator=13701087609, issue=Issue{id=1319222570398888648, tenantId=1146029695717560320, journalId=1263187385517883426, year='2023', volume='51', issue='3', pageStart='561', pageEnd='830', issueExtLink='null', onlineDate='null', pubDate='1679241600000', pubDateStr='2023-03-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1792456770752, creator='13701087609', updateTime=1792456924637, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1319223215889699377, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319222570398888648, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1319223215889699378, tenantId=1146029695717560320, journalId=1263187385517883426, issueId=1319222570398888648, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=635, endPage=640, ext={EN=ArticleExt(id=1319222582730142509, articleId=1319222580960146220, tenantId=1146029695717560320, journalId=1263187385517883426, language=EN, title=Preparation of Core-Shell SiC@C Powder via Modified Molten Salt Shielding Technique, columnId=1321891096775472081, journalTitle=Journal of the Chinese Ceramic Society, columnName=Special Issue on Advances in Basic Research on Refractories Related—Research Articles, runingTitle=null, highlight=null, articleAbstract=

The application of graphite flakes in refractory castables was inhibited by their poor water-wettability, and carbides modified graphite was considered as the best way to solve this problem. Aimed to solve the high cost, difficulty in scalable fabrication, and unclear synthesis mechanism in the preparation process of carbide-modified graphite, a core-shell SiC@graphite powder was fabricated in air by a modified molten salt shielding technique in this work. Influence of encapsulation method on the phase composition and microstructure of as-obtained SiC@C powders was investigated. The results show that SiC@C powders can be fabricated via modified molten salt shielding method. The as-prepared SiC@C powders possess better water-wettability, dispersibility and oxidation resistance. The microstructural characteristic of SiC@C powders is indicated a core-shell structure, SiC layer is formed on graphite flake. The template-growth mechanism is dominant in molten salt synthesis process, i.e., a small amount of Si is dissolved in the molten salt, diffused onto the graphite surfaces via a molten salt medium, and then reacted to form in-situ SiC coating layer on graphite flake, which is controlled due to the external diffusion of element Si.

, authors=Li ZHAO1, Yicheng YIN1, Niu YAO1, Haoxuan MA1, Shaowei ZHANG2, Guowei LIU3, Quanli JIA1, authorsList=Li ZHAO, Yicheng YIN, Niu YAO, Haoxuan MA, Shaowei ZHANG, Guowei LIU, Quanli JIA, authorCompany=null, correspAuthors=Quanli JIA, authorNote=

ZHAO Li (1998-), female, Master candidate. E-mail:

, correspAuthorsNote=
JIA Qianli (1972-), male, Ph.D., Professor. E-mail:
, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1319222583023743790, articleId=1319222580960146220, tenantId=1146029695717560320, journalId=1263187385517883426, language=CN, title=改进熔盐隔离法制备核壳结构SiC@C粉体及其合成机制, columnId=1321891096976798674, journalTitle=硅酸盐学报, columnName=耐火材料相关基础研究进展专题—研究论文, runingTitle=null, highlight=null, articleAbstract=

鳞片石墨的水润湿性掣肘了其在耐火浇注料中的应用，用碳化物对石墨改性是解决该问题的较佳方法。针对碳化物改性石墨制备过程中成本高、规模化困难，合成机制不清楚等问题入手，本工作采用改进的熔盐屏蔽技术，在空气中制备了核壳型SiC@石墨粉体，研究了坯体封装工艺对熔盐隔离法合成核壳结构SiC@石墨粉的物相组成及显微形貌的影响。结果表明：以Si粉和鳞片石墨粉为原料，用熔盐封装和无盐封装隔离法合成的核壳结构SiC@C粉体具有较好的水润湿性、分散性和抗氧化性。SiC@C粉体是基于熔盐法的“模板机制”生成，主要由Si经熔盐液相层扩散至SiC层表面，即Si外扩散过程控制。

, authors=赵莉1, 尹艺程1, 姚妞1, 马浩轩1, 张少伟2, 刘国威3, 贾全利1, authorsList=赵莉, 尹艺程, 姚妞, 马浩轩, 张少伟, 刘国威, 贾全利, authorCompany=null, correspAuthors=贾全利, authorNote=

赵莉（1998—），女，硕士研究生。

, correspAuthorsNote=
贾全利（1972—），男，博士，教授。
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ZHAO Li (1998-), female, Master candidate. E-mail:

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赵莉（1998—），女，硕士研究生。

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赵莉（1998—），女，硕士研究生。

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改进熔盐隔离法制备核壳结构SiC@C粉体及其合成机制
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赵莉 1 , 尹艺程 1 , 姚妞 1 , 马浩轩 1 , 张少伟 2 , 刘国威 3 , 贾全利 1
硅酸盐学报 | 耐火材料相关基础研究进展专题—研究论文 2023,51(3): 635-640
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硅酸盐学报 |耐火材料相关基础研究进展专题—研究论文 2023 , 51 (3) : 635 -640
改进熔盐隔离法制备核壳结构SiC@C粉体及其合成机制
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赵莉（1998—），女，硕士研究生。

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赵莉1 , 尹艺程1, 姚妞1, 马浩轩1, 张少伟2, 刘国威3, 贾全利1
作者信息
  • 1．郑州大学材料科学与工程学院，河南省高温功能材料重点实验室 中国 郑州 450052
  • 2．College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, UK
  • 3．濮阳濮耐高温材料（集团）股份有限公司，中国 河南 濮阳 457100
通讯作者:
贾全利（1972—），男，博士，教授。
作者简介:

赵莉（1998—），女，硕士研究生。

Preparation of Core-Shell SiC@C Powder via Modified Molten Salt Shielding Technique
Li ZHAO1 , Yicheng YIN1, Niu YAO1, Haoxuan MA1, Shaowei ZHANG2, Guowei LIU3, Quanli JIA1
Affiliations
  • 1.College of Materials Science and Engineering, Henan Key Laboratory of High Temperature Functional Materials, Zhengzhou University, Zhengzhou 450052, China
  • 2.College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, UK
  • 3.Puyang Refractories Group Co., Ltd., Puyang 457100, Henan, China
    • Corresponding Author:
    JIA Qianli (1972-), male, Ph.D., Professor. E-mail:

    ZHAO Li (1998-), female, Master candidate. E-mail:

出版时间: 2023-03-20 doi: 10.14062/j.issn.0454-5648.20220871
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鳞片石墨的水润湿性掣肘了其在耐火浇注料中的应用，用碳化物对石墨改性是解决该问题的较佳方法。针对碳化物改性石墨制备过程中成本高、规模化困难，合成机制不清楚等问题入手，本工作采用改进的熔盐屏蔽技术，在空气中制备了核壳型SiC@石墨粉体，研究了坯体封装工艺对熔盐隔离法合成核壳结构SiC@石墨粉的物相组成及显微形貌的影响。结果表明：以Si粉和鳞片石墨粉为原料，用熔盐封装和无盐封装隔离法合成的核壳结构SiC@C粉体具有较好的水润湿性、分散性和抗氧化性。SiC@C粉体是基于熔盐法的“模板机制”生成，主要由Si经熔盐液相层扩散至SiC层表面，即Si外扩散过程控制。

碳化硅包覆石墨  /  改进熔盐隔离法  /  核壳结构  /  水润湿性  /  铝镁浇注料

The application of graphite flakes in refractory castables was inhibited by their poor water-wettability, and carbides modified graphite was considered as the best way to solve this problem. Aimed to solve the high cost, difficulty in scalable fabrication, and unclear synthesis mechanism in the preparation process of carbide-modified graphite, a core-shell SiC@graphite powder was fabricated in air by a modified molten salt shielding technique in this work. Influence of encapsulation method on the phase composition and microstructure of as-obtained SiC@C powders was investigated. The results show that SiC@C powders can be fabricated via modified molten salt shielding method. The as-prepared SiC@C powders possess better water-wettability, dispersibility and oxidation resistance. The microstructural characteristic of SiC@C powders is indicated a core-shell structure, SiC layer is formed on graphite flake. The template-growth mechanism is dominant in molten salt synthesis process, i.e., a small amount of Si is dissolved in the molten salt, diffused onto the graphite surfaces via a molten salt medium, and then reacted to form in-situ SiC coating layer on graphite flake, which is controlled due to the external diffusion of element Si.

silicon carbide coated graphite flake  /  modified molten salt shielding route  /  core-shell  /  water-wettability  /  aluminium oxide-magnesium oxide castables
赵莉, 尹艺程, 姚妞, 马浩轩, 张少伟, 刘国威, 贾全利. 改进熔盐隔离法制备核壳结构SiC@C粉体及其合成机制. 硅酸盐学报, 2023 , 51 (3) : 635 -640 . DOI: 10.14062/j.issn.0454-5648.20220871
Li ZHAO, Yicheng YIN, Niu YAO, Haoxuan MA, Shaowei ZHANG, Guowei LIU, Quanli JIA. Preparation of Core-Shell SiC@C Powder via Modified Molten Salt Shielding Technique[J]. Journal of the Chinese Ceramic Society, 2023 , 51 (3) : 635 -640 . DOI: 10.14062/j.issn.0454-5648.20220871
基金
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  • 国家自然科学基金(52172029)
  • 郑州市协同创新专项(20XTZX12025)
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doi: 10.14062/j.issn.0454-5648.20220871
  • 接收时间：2022-10-14
  • 首发时间：2026-10-20
  • 出版时间：2023-03-20
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  • 收稿日期：2022-10-14
  • 修回日期：2022-11-05
基金
国家自然科学基金(52172029)
郑州市协同创新专项(20XTZX12025)
作者信息
    1．郑州大学材料科学与工程学院，河南省高温功能材料重点实验室 中国 郑州 450052
    2．College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter, UK
    3．濮阳濮耐高温材料（集团）股份有限公司，中国 河南 濮阳 457100

通讯作者:

贾全利（1972—），男，博士，教授。
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2种不同金属材料的力学参数
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Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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