{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1362825895463757184.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1111/j.1151-2916.1994.tb09771.x"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1151-2916.1994.tb09771.x"}},{"identifier":{"@type":"URI","@value":"https://ceramics.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1151-2916.1994.tb09771.x"}}],"dc:title":[{"@value":"Effects of α‐Sic versus β‐Sic Starting Powders on Microstructure and Fracture Toughness of Sic Sintered with Al\n                    <sub>2</sub>\n                    O\n                    <sub>3</sub>\n                    ‐Y\n                    <sub>2</sub>\n                    O\n                    <sub>3</sub>\n                    Additives"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>\n                    Dense Sic ceramics were obtained by pressureless sintering of β‐Sic and α‐Sic powders as starting materials using Al\n                    <jats:sub>2</jats:sub>\n                    O\n                    <jats:sub>3</jats:sub>\n                    ‐Y\n                    <jats:sub>2</jats:sub>\n                    O\n                    <jats:sub>3</jats:sub>\n                    additives. The resulting microstructure depended highly on the polytypes of the starting SiC powders. The microstructure of SiC obtained from α‐SiC powder was composed of equiaxed grains, whereas SiC obtained from α‐SiC powder was composed of a platelike grain structure resulting from the grain growth associated with the β→α phase transformation of SiC during sintering. The fracture toughness for the sintered SiC using α‐SiC powder increased slightly from 4.4 to 5.7 MPa.m\n                    <jats:sup>1/2</jats:sup>\n                    with holding time, that is, increased grain size. In the case of the sintered SiC using β‐SiC powder, fracture toughness increased significantly from 4.5 to 8.3 MPa.m\n                    <jats:sup>1/2</jats:sup>\n                    with holding time. This improved fracture toughness was attributed to crack bridging and crack deflection by the platelike grains.\n                  </jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1382825895463757185","@type":"Researcher","foaf:name":[{"@value":"Seung Kun Lee"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895463757184","@type":"Researcher","foaf:name":[{"@value":"Chong Hee Kim"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00027820"},{"@type":"EISSN","@value":"15512916"},{"@type":"PISSN","@value":"https://id.crossref.org/issn/00027820"},{"@type":"PISSN","@value":"http://id.crossref.org/issn/00027820"}],"prism:publicationName":[{"@value":"Journal of the American Ceramic Society"}],"dc:publisher":[{"@value":"Wiley"}],"prism:publicationDate":"1994-06","prism:volume":"77","prism:number":"6","prism:startingPage":"1655","prism:endingPage":"1658"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1151-2916.1994.tb09771.x"},{"@id":"https://ceramics.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1151-2916.1994.tb09771.x"}],"createdAt":"2005-10-10","modifiedAt":"2025-11-02","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1390001205248429952","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Aqueous Processing, Hot-Pressing and Mechanical Properties of Silicon Carbide with Al2O3 and Y2O3"},{"@language":"ja","@value":"アルミナとイットリアを添加した炭化ケイ素の水系プロセッシング，加圧焼結及び力学特性"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001205249279616","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Colloidal Processing and Mechanical Properties of SiC with Al2O3 and Y2O3"},{"@language":"ja","@value":"アルミナとイットリアを伴った炭化ケイ素のコロイドプロセッシングと力学特性"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001205279182464","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Mixing Effect of Nanometer-Sized SiC Powder on Processing and Mechanical Properties of SiC Using Submicrometer-Sized Powder"},{"@language":"ja","@value":"サブマイクロメーターサイズ粉体を用いた SiC のプロセッシングと力学特性へ及ぼすナノメーターサイズ SiC 粉体の混合効果"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1111/j.1151-2916.1994.tb09771.x"},{"@type":"CROSSREF","@value":"10.2109/jcersj.112.22_references_DOI_KH9EwCf1wWV92b9POyncUp2u84O"},{"@type":"CROSSREF","@value":"10.2109/jcersj.113.143_references_DOI_KH9EwCf1wWV92b9POyncUp2u84O"},{"@type":"CROSSREF","@value":"10.2109/jcersj.113.466_references_DOI_KH9EwCf1wWV92b9POyncUp2u84O"}]}