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Faculty of Dentistry
Document Details
Document Type
:
Article In Journal
Document Title
:
ELECTRO-CHEMICAL BEHA VIOR AND SURFACE HARDNESS OF SELECTED
ELECTRO-CHEMICAL BEHA VIOR AND SURFACE HARDNESS OF SELECTED
Document Language
:
English
Abstract
:
The aim of this study was to determine the corrosion behavior of commercial nickel-chromium and cobalt chromium alloys in different pH media. Also hardness tests were performed for surface mechanical properties evaluation. Two Ni-Cr (Ugirex-III and Wiron 88) and three Co-Cr alloys (Remanium 2000, Wironium & Wironit LA) were investigated by electrochemical technique (Potentiodynamic test) using potentiostat (HAG 5001) in o.g. mass % NaCI solutions of pHs 1.3, 4.4 & 7 at room temperature. Vickers hardness and Rockwell hardness were performed for these alloys. The three Co-Cr alloys revealed high corrosion resistance, especially, Remanium alloy at different pH solutions in comparison with Ni-Cl' alloys (Wiron 88, showed sever dissolution in any pH medium i.e it is the most corrodible alloy). The two Ni-Cr alloys showed lower hardness values than Co-Cr alloys. It was concluded that, harder Co-Cr alloys showed higher corrosion resistance than softer Ni-Cr alloys tested in this study. There may be a direct correlation between surface hardness property and corrosion resistance in general.
ISSN
:
0
Journal Name
:
Egyptian Dental Journal
Volume
:
47
Issue Number
:
3
Publishing Year
:
2001 AH
2001 AD
Article Type
:
Article
Added Date
:
Tuesday, May 20, 2008
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
محمد محمد
muhammad, Muhammad
Investigator
Doctorate
mmmuhammad@kau.edu.sa
Files
File Name
Type
Description
ELECTRO-CHEMICAL BEHA VIOR AND SURFACE HARDNESS OF SELECTED COMMERCIAL TYPES OF DENTAL CHROMIUM ALLOYS.pdf
pdf
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