{"created":"2023-05-15T15:49:40.071999+00:00","id":1593,"links":{},"metadata":{"_buckets":{"deposit":"12cbf9e4-5174-49c9-b65c-0fac5716d4a1"},"_deposit":{"created_by":3,"id":"1593","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"1593"},"status":"published"},"_oai":{"id":"oai:shinshu.repo.nii.ac.jp:00001593","sets":[]},"author_link":["4251","4252","4253","4255","4254","4257","4258","4256"],"item_20002_alternative_title_1":{"attribute_name":"その他(別言語等)のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Corrosion resistance of dental precious metal alloys in pseudo-oral environment"}]},"item_20002_biblio_info_27":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2007-08-31","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"2","bibliographicPageEnd":"209","bibliographicPageStart":"200","bibliographicVolumeNumber":"33","bibliographic_titles":[{"bibliographic_title":"松本歯学"}]}]},"item_20002_creator_2":{"attribute_name":"作成者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"坂井原, 巌"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"山添, 正稔"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"安楽, 照男"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"吉田, 貴光"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"田村, 郁"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"永沢, 栄"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"伊藤, 充雄"}],"nameIdentifiers":[{}]}]},"item_20002_date_19":{"attribute_name":"日付","attribute_value_mlt":[{"subitem_date_issued_datetime":"2012-05-24","subitem_date_issued_type":"Created"}]},"item_20002_description_14":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"The corrosion resistance of twelve commercially available dental precious metal alloys, pure titanium and Ti6A14V alloy was investigated by measuring anodic polarization and open-circuit potential in de-aerated 1 mass%-lactic acid solution. The open-circuit potentials (E_<corr>) ranged from -0.8 to 0.3V vs. SCE and decreased as follows; porcelain-fused-to-metal dental alloys>gold alloys>gold-silver-palladium alloy>silver alloy>pure titanium>Ti6A14V alloy. Open-circuit potentials (E_<corr>) and zero-current potentials (E_z) of the porcelain-fused-to-metal dental alloys and the silver alloy were approximately equal. However, the zero-current potentials (E_z) of the gold alloys, the gold-silver-palladium alloy, the pure titanium and the Ti6A14V alloy were lower than each open-circuit potential (E_<corr>). The critical current densities for passivation (I_<crit>) were of the order of 10^<-3> to 10^1 A・m^<-2>. In the silver alloy, the critical current density sharply increased. The values of common logarithm (Log_<10>Q (E_z+E_<z+0.3>)) of the integrated corrosion values (Q(E_z+E_<z+0.3>)), corresponding to the integrated current density between the zero-current potential (E_z) and the potential of E_z+0.3V (E_z+E_<z+0.3>) vs. SCE, was calculated from the anodic polarization curve. Regression analysis was carried out for their values and nobility (Au+Pt+Pd) atomic% indicated that the values of the common logarithm (Log_<10>Q(E_z+E_<z+0.3>)) varied linearly with nobility (Au+Pt+Pd) atomic% for the twelve commercial dental precious metal alloys. Furthermore, the values of the common logarithm (Log_<10>Q(E_z+E_<z+0.3>)) of the integrated corrosion values (Q(E_z+E_<z+0.3>)) of the gold alloys and the gold-silver-palladium alloy were monotonically proportional to Ag/(Au+Ag+Cu) atomic ratio. Based on the findings of this study, it was suggested that dental precious metal alloys with high nobility and gold alloy with a lower Ag/(Au+Ag+Cu) atomic ratio have high corrosion resistance in the pseudo-oral environment.","subitem_description_type":"Other"}]},"item_20002_description_21":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_20002_full_name_16":{"attribute_name":"公開者(その他言語)","attribute_value_mlt":[{"nameIdentifiers":[{}],"names":[{"name":"松本歯科大学学会"}]}]},"item_20002_identifier_23":{"attribute_name":"資源識別子URI","attribute_value_mlt":[{"subitem_identifier_type":"URI","subitem_identifier_uri":"http://id.nii.ac.jp/1070/00000447/"}]},"item_20002_source_id_25":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0385-1613","subitem_source_identifier_type":"ISSN"}]},"item_20002_source_id_26":{"attribute_name":"処理レコードID(総合目録DB)","attribute_value_mlt":[{"subitem_source_identifier":"AN00232590","subitem_source_identifier_type":"NCID"}]},"item_20002_version_type_51":{"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_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"url":{"url":"https://mdu.repo.nii.ac.jp/?action=repository_action_common_download&item_id=447&item_no=1&attribute_id=22&file_no=1"}}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"歯科用貴金属合金","subitem_subject_scheme":"Other"},{"subitem_subject":"チタン","subitem_subject_scheme":"Other"},{"subitem_subject":"自然浸漬電位","subitem_subject_scheme":"Other"},{"subitem_subject":"アノード分極曲線","subitem_subject_scheme":"Other"},{"subitem_subject":"積算電流密度の常用対数値","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":"歯科用貴金属合金の擬似口腔内環境における腐食挙動","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"歯科用貴金属合金の擬似口腔内環境における腐食挙動"}]},"item_type_id":"20002","owner":"3","path":["2355"],"pubdate":{"attribute_name":"公開日","attribute_value":"2022-11-10"},"publish_date":"2022-11-10","publish_status":"0","recid":"1593","relation_version_is_last":true,"title":["歯科用貴金属合金の擬似口腔内環境における腐食挙動"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-05-15T19:50:45.091561+00:00"}