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歯科用貴金属合金の擬似口腔内環境における腐食挙動
https://mdu.repo.nii.ac.jp/records/447
https://mdu.repo.nii.ac.jp/records/4478e54cd97-80a3-4e80-a31f-f42bd29e1f89
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
matsumoto_shigaku_33-02-05.pdf (700.9 kB)
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| Item type | Journal Article(1) | |||||||
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| 公開日 | 2012-05-24 | |||||||
| タイトル | ||||||||
| タイトル | 歯科用貴金属合金の擬似口腔内環境における腐食挙動 | |||||||
| 言語 | ||||||||
| 言語 | jpn | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | 歯科用貴金属合金 | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | チタン | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | 自然浸漬電位 | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | アノード分極曲線 | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | 積算電流密度の常用対数値 | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
| 資源タイプ | journal article | |||||||
| その他（別言語等）のタイトル | ||||||||
| その他のタイトル | Corrosion resistance of dental precious metal alloys in pseudo-oral environment | |||||||
| 著者 |
坂井原, 巌
× 坂井原, 巌
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | 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. | |||||||
| 書誌情報 |
松本歯学 巻 33, 号 2, p. 200-209, 発行日 2007-08-31 |
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| 出版者 | ||||||||
| 出版者 | 松本歯科大学学会 | |||||||
| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 0385-1613 | |||||||
| 書誌レコードID | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AN00232590 | |||||||
| フォーマット | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | application/pdf | |||||||
| 著者版フラグ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
