Mechanism by which porous structure is formed on the surface of gold alloy containing only Cu as base metal.

Abstract:

:Gold alloys with Cu contents of 10 mass%, 20%, and 30% were used for morphological observation of porous surface structures after heating at 800 degrees C in air followed by pickling with acid solution. With increasing Cu content in the gold alloy, the internal oxidation zone became well-developed in the alloy matrix. The mechanism by which a porous structure was formed on the surface of a gold alloy containing only Cu as a base metal was thought to be as follows: Cu2O which formed along the grain boundaries acted as a diffusion path, permitting the penetration of O2- into the inner alloy matrix, and thereby resulting in internal oxidation occurring predominantly along the grain boundaries.

journal_name

Dent Mater J

journal_title

Dental materials journal

authors

Ohno H,Endo K,Haneda K,Tamura M,Hikita K

doi

10.4012/dmj.24.503

keywords:

subject

Has Abstract

pub_date

2005-12-01 00:00:00

pages

503-7

issue

4

eissn

0287-4547

issn

1881-1361

journal_volume

24

pub_type

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