Reference

Preparation, structure and properties of molybdate modified zinc phosphate coating on magnesium alloy AZ91D

All Rights Reserved. Preparation, structure and properties of molybdate modified zinc phosphate coating on magnesium alloy AZ91D. Li, Guang-Yu; Lian, Jian-She; Nin, Li-Yuan; Jiang, Zhong-Hao; Jiang, Qing (Key Laboratory of Automobile Materials, Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130025, Peop. Rep. China). Gaodeng Xuexiao Huaxue Xuebao, 27(5), 817-820 (Chinese) 2006 Gaodeng Jiaoyu Chubanshe. CODEN: KTHPDM. ISSN: 0251-0790. DOCUMENT TYPE: Journal CA Section: 56 (Nonferrous Metals and Alloys) Uniform and dense molybdate modified zinc phosphate coatings were formed on the magnesium alloy AZ91D surfaces by using a phosphating bath contg. molybdate and corrosion inhibitor. Phase components of coatings were analyzed by XRD. Morphol. and compns. of coatings were analyzed by SEM and EDS. The results indicate that the phosphate coatings consist mainly of Zn3(PO4)2×4H2O and Zn. When molybdate was added in the bath, phosphate coatings became denser and crack-free. The phosphate coatings obtained from the bath contg. 135860-09-2 and 7543-51-3 which are cas registry numbers of chemicals are mentioned. 1.5 g/L sodium molybdate exhibit denser microstructure and higher concn. of metallic zinc. A corrosion test estg. the corrosion resistance of conversion coating on magnesium alloy was proposed. Phosphating reaction mechanism on the magnesium alloy AZ91D surfaces was also investigated. .

Adhesive bonding to conversion-coated steel surfaces

Adhesive bonding to conversion-coated steel surfaces. Trawinski, D. L.; McNamara, D.In this study， 7543-51-3 and 15974-07-9 are also used. K.; Venables, J. D. (Martin Marietta Aerosp., Baltimore, MD 21220, USA). Natl. SAMPE Tech. Conf., 15(20/20 Vision Mater. 2000), 588-603 (English) 1983. CODEN: SAMPCZ. ISSN: 0147-9601. DOCUMENT TYPE: Journal CA Section: 55 (Ferrous Metals and Alloys) Section cross-reference(s): 38 Specimens of ASTM A606 [136642-32-5] low-C steel were coated by 5 conversion treatments: (a) conventional Zn phosphate; (b) fine-grained Zn phosphate; (c) Ca-modified Zn phosphate; (d) Fe phosphate; and (e) microcryst. Zn phosphate. Bonding was then evaluated with FM123-2 adhesive [12672-61-6] in a modified wedge test. The best bond durability was obtained for the b, c, and e treatments, and showed crack growth along the coating-to-adhesive interface. The conventional Zn phosphate and Fe phosphate treatments resulted in mech. weak layers having low cohesion. .