H. Zhang, G. C. Yao, S. L. Wang, Y. H. Liu and H. J. Luo, “A Chrome-Free Conversion Coating for Magnesium— Lithium Alloy by a Phosphate-Permanganate Solution,” Surface and Coatings Technology, Vol. 202, No. 9, February 2008, pp. 1825-1830. doi:10.1016/j.surfcoat.2007.07.094

has been cited by the following article:

• TITLE: Formation Process and Properties of Phytic Acid Conversion Coatings on Magnesium

  AUTHORS: Jian-Rui Liu, Yi-Na Guo, Wei-Dong Huang

  KEYWORDS: Magnesium; Chemical Conversion Coatings; Phytic Acid; Formation Mechanism

  JOURNAL NAME: Journal of Surface Engineered Materials and Advanced Technology, Vol.1 No.1, March 16, 2011

  ABSTRACT: A chromium-free conversion coating treatment for magnesium by phytic acid solution was studied. The formation process of phytic acid conversion coating was studied through measuring the open circuit potential (OCP) and weight change of the pure magnesium in the different conversion treatment time. The morphologies and compositions of the coatings were determined by SEM and EDS respectively. The conversion coating has the multideck structure with netlike morphology which is similar to the chromate conversion coating, and is mainly composed of Mg, P, O and C. The contents of C and P and the size of the cracks in different layers decrease from the external layer to the inner layer. The hydroxyl groups and phosphate carboxyl groups in the coating which have the similar properties to organic paintcoat are beneficial to the combination of substrate and organic paintcoat. The formation mechanism and thickness variation of the conversion coatings are also discussed.