In-situ hydrothermal crystallization Mg(OH)2 films on magnesium alloy AZ91 and their corrosion resistance properties
详细信息 查看全文
- 作者：Jing Feng ; Yan Chen ; Xiaohan Liu ; Ti ; i Liu ; Linyi Zou ; Yuting Wang ; Yueming Ren ; Zhuangjun Fan ; Yanzhuo Lv ; Milin Zhang
- 关键词：Alloys ; Thin films ; Coatings ; Adhesion ; Corrosion
- 刊名：Materials Chemistry and Physics
- 出版年：16 December, 2013
- 年：2013
- 卷：143
- 期：1
- 页码：322-329
- 全文大小：2569 K
文摘
Mg(OH)2 films have been fabricated on magnesium alloy AZ91 substrates by an in-situ hydrothermal method. AZ91 alloy substrates act as both the source of Mg2+ ion and the support for the Mg(OH)2 film in synthetic process. The effect of pH value and hydrothermal treatment time on the morphologies and corrosion resisting properties of Mg(OH)2 film is studied. The obtained Mg(OH)2 films are uniform and compact. The adhesion between the films and the substrate is strong due to the in-situ growth process, which enhances their potential for practical applications. Potentiodynamic polarization measurements showed that the Mg(OH)2 films obtained at pH 10, 3聽h exhibits the highest increase in corrosion potential at聽鈭?.7097聽V and lowest icorr, which suggests that it is the best effective film in improving the corrosion resistance of AZ91in all obtained films.