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Role of alloying elements on the cytotoxic behavior and corrosion of austenitic stainless steels

Authors
 Young Sik Kim  ;  Y.R. Yoo  ;  H.S. Kim  ;  Jae Hong Yoon  ;  Kyoung Nam Kim  ;  Keun Taek Oh  ;  C.G. Sohn 
Citation
 Materials Science Forum, Vol.475~479 : 2295-2298, 2005 
Journal Title
Materials Science Forum
ISSN
 1662-9752 
Issue Date
2005
MeSH
Austenitic Stainless Steel ; Biocompatibility ; Bio-Metal ; Corrosion ; Cytotoxic ; EDTA ; High Mo ; High Ni ; Ion Selective Dissolution ; Passive Films ; Pitting
Keywords
Austenitic Stainless Steel ; Biocompatibility ; Bio-Metal ; Corrosion ; Cytotoxic ; EDTA ; High Mo ; High Ni ; Ion Selective Dissolution ; Passive Films ; Pitting
Abstract
Super stainless steel has been used to solve corrosion problems of biomaterials because it shows the excellent corrosion resistance as like Ti and Ti alloys and has better mechanical properties than Ti and Ti alloys. We designed high Mo and Ni bearing super austenitic stainless steel. To obtain desirable microstructure, Cr, Ni, Mo, N contents were controlled. This work focused on the role of alloying elements on cytotoxic behavior and corrosion of stainless steel. In acidic chloride solution, when the alloys had high PRE values, the alloys showed high pitting resistance and low critical current density. However, in Hanks’ solution, the higher PRE’s alloys showed high critical passive current density. Namely, it was revealed that EDTA among Hanks’ solution played an important role to increase the critical passive current density of high Mo and Ni bearing super stainless steels, regardless of PRE’s value of the alloys. Therefore, even if the PRE values of the alloys were higher, high Ni and Mo bearing alloys would reveal more cytotoxic and high metal ion release rate than 316L stainless steel.
Full Text
http://www.scientific.net/MSF.475-479.2295
DOI
10.4028/www.scientific.net/MSF.475-479.2295
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/22282913/114849
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