{"created":"2023-06-19T07:37:25.626859+00:00","id":447,"links":{},"metadata":{"_buckets":{"deposit":"4cfb888d-b298-4e07-a54a-527a4701b4fa"},"_deposit":{"created_by":3,"id":"447","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"447"},"status":"published"},"_oai":{"id":"oai:mdu.repo.nii.ac.jp:00000447","sets":["1:29:128"]},"author_link":["0"],"item_2_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_2_biblio_info_7":{"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_2_description_19":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_2_description_5":{"attribute_name":"抄録","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":"Abstract"}]},"item_2_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"松本歯科大学学会"}]},"item_2_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00232590","subitem_source_identifier_type":"NCID"}]},"item_2_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0385-1613","subitem_source_identifier_type":"ISSN"}]},"item_2_version_type_20":{"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":"坂井原, 巌"},{"creatorName":"山添, 正稔"},{"creatorName":"安楽, 照男"},{"creatorName":"吉田, 貴光"},{"creatorName":"田村, 郁"},{"creatorName":"永沢, 栄"},{"creatorName":"伊藤, 充雄"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2012-05-24"}],"displaytype":"detail","filename":"matsumoto_shigaku_33-02-05.pdf","filesize":[{"value":"700.9 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"matsumoto_shigaku_33-02-05.pdf","url":"https://mdu.repo.nii.ac.jp/record/447/files/matsumoto_shigaku_33-02-05.pdf"},"version_id":"03d7be94-ccd0-45c5-b96c-b8e3fa1d864b"}]},"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":"2","owner":"3","path":["128"],"pubdate":{"attribute_name":"公開日","attribute_value":"2012-05-24"},"publish_date":"2012-05-24","publish_status":"0","recid":"447","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":"2023-06-19T08:38:12.640974+00:00"}