DocumentCode :
1205005
Title :
An Evaluation of the Resistance to Electrolysis of Metals for Use in Biostimulation Microprobes
Author :
White, Riobert L. ; Gross, Thomas J.
Author_Institution :
Stanford Electronics Lab., Stanford, Calif. 94305.
Issue :
6
fYear :
1974
Firstpage :
487
Lastpage :
490
Abstract :
Electrolysis measurements have been made on electrodes of platinum, stainless steel, tungsten, iridium, palladium, rhodium, rhenium, gold, tantalum, titanium, zirconium, and some conducting oxides of the tungsten bronze family. Electrodes were immersed in physiologic saline solution and subjected to biphasic rectangular current pulses of various current densities at 50 pps, 24 hours per day for periods up to nine months. Weight loss was recorded at intervals during this time. We conclude that iridium,rhodium, platinum and palladium are extremely resistant to electrolysis under these conditions and electrolysis under 5¿ thick, made of such materials should have lifetimes on the order of decades. Gold is somewhat poorer but probably acceptable; all the other materials tested, including tungsten and stainless steel, are unacceptable as chronic microelectrode materials.
Keywords :
Building materials; Electrical resistance measurement; Electrochemical processes; Electrodes; Gold; Immune system; Palladium; Platinum; Steel; Tungsten;
fLanguage :
English
Journal_Title :
Biomedical Engineering, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9294
Type :
jour
DOI :
10.1109/TBME.1974.324339
Filename :
4120832
Link To Document :
بازگشت