期刊
SCRIPTA MATERIALIA
卷 54, 期 8, 页码 1457-1462出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2005.12.053
关键词
shape memory alloys; hydroxyapatite; thin films; chemical treatment
A chemical treatment procedure was used to treat the acid-alkali treated NiTi samples. The accelerated formation of a dense and uniform calcium phosphate layer in simulated body fluid on the chemically treated NiTi alloy was observed within two days of immersion. The proposed chemical treatment procedure resulted in enhanced adsorption of Ca2+ and HPO42- ions onto the treated surface and consequent local Ca2+ and HPO42- ions supersaturation. The thickness of the adsorption layer, composed mainly of Ca2+ and HPO42- ions, was about 100 nm. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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