Evaluation of corrosion resistance of Co-33Cr-5Mo-0.3N alloy using electrochemical impedance technique
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- MANAKA Tomoyo
- Department of Metallic Biomaterials, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- KODAMA Haruna
- Department of Metallic Biomaterials, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
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- TSUTSUMI Yusuke
- Corrosion Property Group, Research Center for Structural Materials, National Institute for Materials Science
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- HANAWA Takao
- Department of Metallic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University Center for Advanced Medical Engineering Research & Development, Kobe University
Bibliographic Information
- Other Title
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- Co-33Cr-5Mo-0.3N 合金の電気化学インピーダンス法による耐食性評価
- Co-33Cr-5Mo-0.3N ゴウキン ノ デンキ カガク インピーダンスホウ ニ ヨル タイショクセイ ヒョウカ
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Abstract
<p>The corrosion resistance of a Co-Cr-Mo alloy containing higher levels of N and Cr than conventional Co-Cr-Mo alloys was evaluated with electrochemical impedance and anodic polarization techniques in a lactic-acid-containing NaCl solution, and the results were compared with those from conventional and commercial Co-Cr-Mo alloys. In addition, surfaces of the alloys after anodic polarization were observed using an optical microscope. The resistance to corrosion until 72 h of Co-33Cr-5Mo-0.3N alloy was the strongest among Co-Cr-Mo alloys employed in this study. The corrosion resistance of Co-31.3Cr-6Mo until about 10 h was the strongest, while that at 72 h was moderate. Therefore, Co-33Cr-5Mo-0.3N alloy shows sufficient corrosion resistance, especially after 40-50 h. Elements C, Si, and Mn decrease the corrosion resistance of Co-Cr-Mo alloys;high concentrations of Cr and N increase it. The significance of evaluation using electrochemical impedance was clearly revealed by this study.</p>
Journal
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- THE JOURNAL OF JAPANESE SOCIETY FOR DENTAL MATERIALS AND DEVICES
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THE JOURNAL OF JAPANESE SOCIETY FOR DENTAL MATERIALS AND DEVICES 40 (1), 75-84, 2021-01-25
The Japanese Society for Dental Materials and Devices
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Details 詳細情報について
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- CRID
- 1390006120727766272
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- NII Article ID
- 130008021897
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- NII Book ID
- AA12452694
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- ISSN
- 2188417X
- 18844421
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- NDL BIB ID
- 031298859
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed