@article{oai:hsuh.repo.nii.ac.jp:00007529,
 author = {遠藤, 一彦 and 荒木, 吉馬 and 川島, 功 and 山根, 由朗 and 大野, 弘機 and 松田, 浩一},
 issue = {2},
 journal = {東日本歯学雑誌},
 month = {Dec},
 note = {P(論文), リンゲル液および0.1%Na_2S液液中における三種の市販Ag-Pd-Cu-Au合金の腐食挙動を電気化学的手法と表面分析により評価した。リンゲル液中においては, いずれの合金も高い耐食性を示し, 合金間に顕著な耐食性の差は認められなかった。それに対して, 0.1%Na_2S溶液中では, 貴金属含有量(Au十Pd)の少ないAlloy Aが最も高いアノード反応性を示し, 合金表面に最も多い腐食生成物を生成した。腐食生成物は, X線回折によりAg_2Sと同定され, 合金表面のSEM観察から主にAg-rich相が選択的に腐食されることが確められた。分極抵抗の測定から, Alloy Aは0.1%Na_2S溶液中ではリンゲル液中に比液して, 500倍の速度で腐食することが明らかとなった。分極抵抗法により, 自然腐食状態にある合金の腐食速度を精度よく定量的に求めることができた。, The corrosion resistance of three commercial Ag-Pd-Cu-Au alloys was estimated in Ringer's and 0.1% Na2_S solutions by electrochemical techniques and surface analyses. In Ringer's solution,the three alloys showed high corrosion resistance and there was no significant difference in the anodic polarization characteristics of the three alloys. In the 0.1% Na2_S solution, the Alloy A which had the lowest noble metal content(Au + Pd) exhibited the highest anodic reactivity with the largest amount of corrosion product on the alloy surface. It was determined that the Ag-rich phase of Ag-Pd-Cu-Au alloy was preferentially attacked to form Ag_2S corrosion product. The polarization resistance data showed that the corrosion rate for Alloy A in 0.1% Na2_S solution was determined to be 500 times higher than that in Ringer's solution.The corrosion rate of the alloy in the freely corroded condition can be estimated quantitatively and precisely by measuring the polarization resistance.},
 pages = {155--163},
 title = {<Original>In Vitro Study on the Corrosion Behavior of Three Commercial Ag-Pd-Cu-Au Alloys in Ringer's and 0.1 % Na_2S Solutions},
 volume = {8},
 year = {1989}
}