Evaluation of the corrosion resistance of stainless steel ISO 5832-9 and F138 implants removed from patients

Química Nova

Oliveira, Luiz Fernando Cappa de¹  Silva, Elison da Fonseca e¹  Instituto Federal de Educação Ciência e Tecnologia Sudeste de Minas Gerais, Juiz de Fora, Brasil¹  Universidade Federal de Juiz de Fora, Juiz de Fora, Brasil¹ 

关键词: stain steel;    orthopedic implant;    corrosion.;   

DOI  :  10.1590/S0100-40422012000100012

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This work has compared the surfaces of two different steel samples used as orthopedical implants, classified as ASTM F138 and ISO5832-9, through optical emission spectroscopy, by means of SEM and EDS. The samples (implants) were also submitted to potentiodynamic cyclic polarization in Ringer lactate and NaCl 0.9 M L-1 solutions; ISO5832-9 sample did not show any kind of localized corrosion, but in the case of F138 steel was observed a pit localized corrosion in both solutions. In Ringer lactate solution it was observed a loss of about 63% for nickel and 26% for iron for F138 stell, compared to the initial composition.

【 授权许可】

Unknown