{"created":"2023-07-25T09:58:54.384468+00:00","id":2085,"links":{},"metadata":{"_buckets":{"deposit":"8e9c5451-fa95-4678-90d4-522f3a4996e2"},"_deposit":{"created_by":15,"id":"2085","owners":[15],"pid":{"revision_id":0,"type":"depid","value":"2085"},"status":"published"},"_oai":{"id":"oai:oacis.repo.nii.ac.jp:00002085","sets":["89:128:488"]},"author_link":["3313"],"item_6_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2021-03-01","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"56","bibliographicPageStart":"52","bibliographicVolumeNumber":"17","bibliographic_titles":[{"bibliographic_title":"東京海洋大学研究報告"},{"bibliographic_title":"Journal of the Tokyo University of Marine Science and Technology","bibliographic_titleLang":"en"}]}]},"item_6_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"海水中における流体機械材料と塗装材のキャビテーション壊食のメカニズムを調べた．耐食材料の壊食抵抗は硬くなると向上するが，オーステナイト系ステンレス鋼や銅合金は腐食の影響により低下する．流れのある場合の最大壊食速度と海水温度の相関は，圧力を考慮した相対温度で整理すると，流れの無い清水場合の相関とほぼ同じである．海水温30～60 ℃での壊食速度は，1 ℃で約１％の変化が見込まれた．また，流水が海水中から清水中に変わると壊食速度は腐食作用が僅少になるため急減し，さらに清水中から海水中に変わると逆に急増する．シリコーン樹脂の膜厚が臨界厚さより薄くなると最大壊食速度は急増し，この臨界膜厚は接着力を向上させる下塗材との音響インピーダンスの関係に依存する．","subitem_description_type":"Abstract"},{"subitem_description":"Cavitation erosion mechanisms of fluid materials and resins were studied in seawater. The cavitation erosion resistance of corrosion-resistant materials correlates with their hardness, but the resistance of austenitic stainless steel and copper alloys are lowered by the effects of corrosive action. When arranged by relative temperature based on the pressure, relationships are almost identical between the temperature and the maximum volume loss rate in seawater in a flow condition and in fresh water in a non-flow condition. With a volume loss rate at 1 °C, fluctuation of 1% is inferred for seawater of 30–60 °C. However, the volume loss rate decreases rapidly when fresh water is substituted for seawater. It increases rapidly by corrosive action when seawater is substituted for fresh water. Moreover, the maximum volume loss rate increases rapidly when the coating silicone-resin thickness becomes thinner than the critical thickness. Results show that the rate depends on the relationship of acoustic impedance between the coating resin and an undercoating resin with high adhesive strength.","subitem_description_type":"Abstract"}]},"item_6_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"東京海洋大学元教授","subitem_description_type":"Other"},{"subitem_description":"Formerly professor of Tokyo University of Marine Science and Technology(TUMSAT) ","subitem_description_type":"Other"}]},"item_6_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東京海洋大学"}]},"item_6_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA12066872","subitem_source_identifier_type":"NCID"}]},"item_6_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"2189-0951","subitem_source_identifier_type":"ISSN"}]},"item_6_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":"望月, 敬美"},{"creatorName":"モチヅキ, ヒロミ","creatorNameLang":"ja-Kana"},{"creatorName":"Mochizuki, Hiromi","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2021-03-01"}],"displaytype":"detail","filename":"AA12066872-17-5.pdf","filesize":[{"value":"742.8 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"AA12066872-17-5.pdf","url":"https://oacis.repo.nii.ac.jp/record/2085/files/AA12066872-17-5.pdf"},"version_id":"254e85f9-9dba-4b98-bfa0-063f2af21a67"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"キャビテーション壊食","subitem_subject_scheme":"Other"},{"subitem_subject":"海水","subitem_subject_scheme":"Other"},{"subitem_subject":"腐食","subitem_subject_scheme":"Other"},{"subitem_subject":"壊食抵抗","subitem_subject_scheme":"Other"},{"subitem_subject":"硬さ","subitem_subject_scheme":"Other"},{"subitem_subject":"壊食量","subitem_subject_scheme":"Other"},{"subitem_subject":"Cavitation erosion","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Seawater","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Corrosion","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Erosion resistance","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Hardness","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Mass loss","subitem_subject_language":"en","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":"departmental bulletin paper"}]},"item_title":"研究ノート：海水中のキャビテーション壊食","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"研究ノート：海水中のキャビテーション壊食"},{"subitem_title":"Research Note : Cavitation Erosion in Seawater","subitem_title_language":"en"}]},"item_type_id":"6","owner":"15","path":["488"],"pubdate":{"attribute_name":"公開日","attribute_value":"2021-03-01"},"publish_date":"2021-03-01","publish_status":"0","recid":"2085","relation_version_is_last":true,"title":["研究ノート：海水中のキャビテーション壊食"],"weko_creator_id":"15","weko_shared_id":-1},"updated":"2023-07-25T10:36:48.937641+00:00"}