Microdissolution of calcium ions from calcium-ion-implanted titanium

被引：48

作者：

Hanawa, T ^{[1
]}

Asami, K ^{[1
]}

Asaoka, K ^{[1
]}

机构：

[1] TOHOKU UNIV,INST MAT RES,LAB DEV RES ADV MAT,AOBA KU,SENDAI,MIYAGI 980,JAPAN

来源：

CORROSION SCIENCE | 1996年 / 38卷 / 09期

关键词：

D O I：

10.1016/0010-938X(96)00053-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microdissolution of calcium ions from calcium-ion-implanted titanium into nitric acid solutions (pH-0.99, 0, 1 and 2) and phosphate-citric acid buffers (pH 5.2 and 7.2) at 310 K for 10(3)-5 x 10(6) s was characterized using X-ray photo-electron spectroscopy. As a result, the surface oxides with calcium were found to dissolve in the solutions. Oxygen decreased and titanium increased in the surface oxide according to the dissolution. In addition, hydroxyl radicals decreased in number and the proportion of Ti4+ in titanium increased. Core-level binding energies of calcium, and titanium originating from Ti4+, decreased with the dissolution. These changes were caused by the transformation of surface oxide according to the dissolution. Calcium dissolved and, consequently, the surface oxide became titanium oxide. It is feasible to estimate the microdissolution of an element from materials using surface analysis techniques. Copyright (C) 1996 Elsevier Science Ltd

引用

页码：1579 / 1594

页数：16

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