Microstructure, corrosion resistance and adhesive strength of calcium phosphate coatings formed on pure magnesium by a simple immersion method

M. Tomozawa, S. Hiromoto

研究成果: Conference contribution

6 被引用数 (Scopus)

抄録

Octa-calcium-phosphate (OCP) coatings were formed at weak acid on pure magnesium by a hydrothermal treatment. The microstructure of the coatings was investigated with XRD, SEM and TEM. At initial stage of treatment, a dual-layer coating consisting of an inner dense layer and an outer layer composed of plate-like crystals was formed. Both the layers grew with an increase in the treatment time up to 7.2 ks. Further increase in the treatment time caused the following change in the coating; (1) suppression of the coating growth, (2) partial change of OCP in the inner layer into hydroxyapatite (HAp) and (3) growth of a Mg(OH)2 layer at the interface between the coating and the Mg substrate. The adhesive strength of the coatings decreased with the growth of the Mg(OII) layer. The corrosion resistance of the specimens in a 3.5wt% NaCl solution increased with the growth of the coating.

本文言語English
ホスト出版物のタイトルCorrosion Posters (General) - 218th ECS Meeting
出版社Electrochemical Society Inc.
ページ31-37
ページ数7
30
ISBN(電子版)9781566778886
ISBN(印刷版)9781607682400
DOI
出版ステータスPublished - 2010
外部発表はい
イベントCorrosion General Poster Session - 218th ECS Meeting - Las Vegas, NV, United States
継続期間: 2010 10月 102010 10月 15

出版物シリーズ

名前ECS Transactions
番号30
33
ISSN(印刷版)1938-5862
ISSN(電子版)1938-6737

Conference

ConferenceCorrosion General Poster Session - 218th ECS Meeting
国/地域United States
CityLas Vegas, NV
Period10/10/1010/10/15

ASJC Scopus subject areas

  • 工学(全般)

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