TY - JOUR
T1 - Galvanic corrosion of ferritic stainless steels used for dental magnetic attachments in contact with an iron-platinum magnet
AU - Nakamura, Keisuke
AU - Takada, Yukyo
AU - Yoda, Masanobu
AU - Kimura, Kohei
AU - Okuno, Osamu
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2008
Y1 - 2008
N2 - This study was an examination of the galvanic corrosion of ferritic stainless steels, namely SUS 444, SUS XM27, and SUS 447J1, in contact with a Fe-Pt magnet. The surface area ratio of each stainless steel to the Fe-Pt magnet was set at 1/1 or 1/10. Galvanic corrosion between the stainless steels and the magnet was evaluated by the amount of released ions and the electrochemical properties in 0.9% NaCl solution. Although each stainless steel showed sufficient corrosion resistance for clinical use, the amount of ions released from each tended to increase when the stainless steel was in contact with the magnet. When the surface area ratio was reduced to 1/10, the amount of Fe ions released from the stainless steels increased significantly more than when there was no contact. Since contact with the magnet which possessed an extremely noble potential created a very corrosive environment for the stainless steels, 447J1 was thus the recommended choice against a corrosion exposure as such.
AB - This study was an examination of the galvanic corrosion of ferritic stainless steels, namely SUS 444, SUS XM27, and SUS 447J1, in contact with a Fe-Pt magnet. The surface area ratio of each stainless steel to the Fe-Pt magnet was set at 1/1 or 1/10. Galvanic corrosion between the stainless steels and the magnet was evaluated by the amount of released ions and the electrochemical properties in 0.9% NaCl solution. Although each stainless steel showed sufficient corrosion resistance for clinical use, the amount of ions released from each tended to increase when the stainless steel was in contact with the magnet. When the surface area ratio was reduced to 1/10, the amount of Fe ions released from the stainless steels increased significantly more than when there was no contact. Since contact with the magnet which possessed an extremely noble potential created a very corrosive environment for the stainless steels, 447J1 was thus the recommended choice against a corrosion exposure as such.
KW - Ferritic stainless steel
KW - Galvanic corrosion
KW - Iron-platinum magnet alloy
UR - http://www.scopus.com/inward/record.url?scp=46249100681&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=46249100681&partnerID=8YFLogxK
U2 - 10.4012/dmj.27.203
DO - 10.4012/dmj.27.203
M3 - Article
C2 - 18540393
AN - SCOPUS:46249100681
VL - 27
SP - 203
EP - 210
JO - Dental Materials Journal
JF - Dental Materials Journal
SN - 0287-4547
IS - 2
ER -