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Corrosion-wear of high molybdenum and nitrogen stainless steel for biomedical applications

Authors
 Keun Taek Oh  ;  Kyoung Nam Kim  ;  Min Lee  ;  Yong Soo Park 
Citation
 JOURNAL OF THE ELECTROCHEMICAL SOCIETY, Vol.149(4) : 146-153, 2002 
Journal Title
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
ISSN
 0013-4651 
Issue Date
2002
Keywords
stainless steel ; corrosion resistance ; wear resistance ; biomedical materials
Abstract
The corrosion-wear property of high molybdenum and nitrogen stainless steel (UNS no. S32050) was investigated and compared with that of Ti, Ti6Al4V, CoCrMo, and 316L stainless steel used conventionally for biomedical applications. The corrosion resistance and corrosion-wear resistance of S32050 were examined using electrochemical methods. The stability of the passive film in a corrosion-wear system was evaluated. The corrosion-resistance of S32050 is as good as Ti alloys, because its passive film was enhanced due to the synergistic effect of the large amount of Mo and N addition. Therefore, it is predicted that S32050 can minimize the toxic effects by the released ions. The wear loss of UHMWPE (ultrahigh molecular weight polyethylene) to S32050 was less than that to Ti6Al4V and 316L stainless steel, and similar to the CoCrMo. There were no scratches on the S32050 surface after the corrosion-wear test. S32050 had a low current density and high pitting potential under wear and had corrosion-wear properties superior to Ti6Al4V and similar to the CoCrMo in Hank’s solution. S32050 with good corrosion-wear resistance could supplement the deficiencies of Ti alloys and CoCrMo. Thus, S32050 is considered to have the probability to be good metallic material for biomedical applications.
Full Text
http://jes.ecsdl.org/content/149/4/B146.short
DOI
10.1149/1.1457984
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyoung Nam(김경남)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/143732
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