EFFECT OF PROTEINS AND PH ON FRETTING CORROSION AND METAL-ION RELEASE

被引：68

作者：

MERRITT, K

BROWN, SA

机构：

[1] Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, United States

来源：

JOURNAL OF BIOMEDICAL MATERIALS RESEARCH | 1988年 / 22卷 / 02期

关键词：

BIOMEDICAL ENGINEERING - Surgical Implants - CORROSION - Fretting - PROTEINS - Solutions;

D O I：

10.1002/jbm.820220204

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The objectives of this study were to determine the effect of proteins and protein charge on the corrosion of stainless steel. As Zwitter ions, proteins have a positive charge in solutions acidic to their isoelectric point (pI) and a negative charge in solutions basic to the pI. Fretting corrosion rates of stainless-steel plates and screws as determined by weight loss and metal ion release were studied in saline and protein solutions with the pH adjusted to 3, 5, and 8. Alterations in pH did not affect the corrosion rate in saline solutions. However, alterations of the pH in albumin solutions did affect the corrosion rate. The effect of proteins on fretting corrosion was dependent on the charge on the protein.

引用

页码：111 / 120

页数：10

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