{"created":"2023-05-15T15:25:22.529882+00:00","id":12981,"links":{},"metadata":{"_buckets":{"deposit":"f1cb2700-fb19-4687-aea2-820d3b0bc5e1"},"_deposit":{"created_by":3,"id":"12981","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"12981"},"status":"published"},"_oai":{"id":"oai:sucra.repo.nii.ac.jp:00012981","sets":["94:426"]},"author_link":["18337","20643","20642"],"item_119_alternative_title_1":{"attribute_name":"タイトル（別言語）","attribute_value_mlt":[{"subitem_alternative_title":"Preparation and Formation Process of HfB_2 Fine Powders by Mg-Thermite Method"}]},"item_119_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1993","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1172","bibliographicPageEnd":"460","bibliographicPageStart":"456","bibliographicVolumeNumber":"101","bibliographic_titles":[{"bibliographic_title":"日本セラミックス協会学術論文誌"}]}]},"item_119_date_31":{"attribute_name":"作成日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2008-01-09","subitem_date_issued_type":"Created"}]},"item_119_description_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_description":"http://ci.nii.ac.jp/naid/110002290337/ | http://ci.nii.ac.jp/naid/110002290337/","subitem_description_type":"Other"}]},"item_119_description_19":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Preparation conditions and formation process of HfB_2 fine powders from HfO_2, amorphous B and Mg under an argon flow were examined. Fine powders of single phase HfB_2 were prepared by heating powder mixtures of HfO_2: amorphous B: and Mg in molar ratios of 1:2:7-10 at 800℃ for 1 h. The HfB_2 powders had particle sizes of 0.03-0.3μm. The formation process of HfB_2 was composed of the following reactions: (1)650℃〜: HfO_2+2Mg→α-Hf+2MgO, (2)550-750℃: Mg+2B→MgB_2, (3)750℃〜: MgB_2→Mg+2B, (4)800℃〜: α-Hf+2B→HfB_2 and (5)850℃〜: 2MgB_2→MgB_4+Mg. MgB_2 did not interfere the formation of HfB_2 because it decomposed above 750℃, whereas MgB_4 interfered the boridation of α-Hf above 850℃ because it is thermally stable. For the preparation of single phase HfB_2 powders, it is most important to suppress the formation of MgB_4 by controlling the reaction temperature below 850℃.","subitem_description_type":"Abstract"}]},"item_119_description_21":{"attribute_name":"注記","attribute_value_mlt":[{"subitem_description":"rights: 社団法人日本セラミックス協会\nrights: 本文データは学協会の許諾に基づきCiNiiから複製したものである\nrelation: IsVersionOf: http://ci.nii.ac.jp/naid/110002290337/","subitem_description_type":"Other"}]},"item_119_description_29":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"text","subitem_description_type":"Other"}]},"item_119_description_30":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_119_publisher_11":{"attribute_name":"出版者名","attribute_value_mlt":[{"subitem_publisher":"社団法人日本セラミックス協会"}]},"item_119_source_id_14":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"09145400","subitem_source_identifier_type":"ISSN"}]},"item_119_text_27":{"attribute_name":"版","attribute_value_mlt":[{"subitem_text_value":"[出版社版]"}]},"item_119_text_3":{"attribute_name":"著者 ローマ字","attribute_value_mlt":[{"subitem_text_value":"KOBAYASHI, Hidehiko"},{"subitem_text_value":"SHIMOSAKA, Kenichi"},{"subitem_text_value":"MITAMURA, Takashi"}]},"item_119_text_32":{"attribute_name":"アイテムID","attribute_value_mlt":[{"subitem_text_value":"A1002231"}]},"item_119_text_4":{"attribute_name":"著者 所属","attribute_value_mlt":[{"subitem_text_value":"埼玉大学大学院理工学研究科物質科学部門"},{"subitem_text_value":"埼玉大学工学部応用化学科"},{"subitem_text_value":"埼玉大学工学部"}]},"item_119_text_5":{"attribute_name":"著者 所属(別言語)","attribute_value_mlt":[{"subitem_text_value":"Department of Applied Chemistry, Faculty of Engineering, Saitama University"},{"subitem_text_value":"Department of Applied Chemistry, Faculty of Engineering, Saitama University"},{"subitem_text_value":"Faculty of Engineering, Saitama University"}]},"item_119_text_9":{"attribute_name":"年月次","attribute_value_mlt":[{"subitem_text_value":"1993-4"}]},"item_119_version_type_28":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"小林, 秀彦"},{"creatorName":"コバヤシ, ヒデヒコ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"下坂, 建一"},{"creatorName":"シモサカ, ケンンイチ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"三田村, 孝"},{"creatorName":"ミタムラ, タカシ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2018-01-24"}],"displaytype":"detail","filename":"A1002231.pdf","filesize":[{"value":"649.8 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"A1002231.pdf","url":"https://sucra.repo.nii.ac.jp/record/12981/files/A1002231.pdf"},"version_id":"783391d5-17a3-4c44-94a6-3c39de81f314"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Preparation","subitem_subject_scheme":"Other"},{"subitem_subject":"HfB_2","subitem_subject_scheme":"Other"},{"subitem_subject":"Mg-thermite method","subitem_subject_scheme":"Other"},{"subitem_subject":"Amorphous B","subitem_subject_scheme":"Other"},{"subitem_subject":"HfO_2","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Mg還元テルミット法によるHfB_2の微粉末合成と生成過程","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Mg還元テルミット法によるHfB_2の微粉末合成と生成過程"}]},"item_type_id":"119","owner":"3","path":["426"],"pubdate":{"attribute_name":"公開日","attribute_value":"2008-01-09"},"publish_date":"2008-01-09","publish_status":"0","recid":"12981","relation_version_is_last":true,"title":["Mg還元テルミット法によるHfB_2の微粉末合成と生成過程"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-05-16T12:44:57.375957+00:00"}