@article {2007,
	title = {Microstructural effects on the formation and degradation of zinc phosphate coatings on 2024-Al alloy},
	journal = {Applied Surface Science},
	volume = {254},
	number = {15},
	year = {2008},
	note = {ISI Document Delivery No.: 295YWTimes Cited: 2Cited Reference Count: 26Akhtar, A. S. Wong, P. C. Wong, K. C. Mitchell, K. A. R.},
	month = {May},
	pages = {4813-4819},
	type = {Article},
	abstract = {The formation of zinc phosphate (ZPO) coatings on 2024-T3 aluminum alloy was studied using scanning electron microscopy (SEM), scanning Auger microscopy (SAM) and X-ray photoelectron spectroscopy (XPS), with an emphasis on microstructural effects involving second-phase particles and the alloy matrix. Surface polishing results in an Al-Cu-Mg particle surface that contains metallic Cu as well as an overlayer of aluminum and magnesium oxide, while larger amounts of aluminum oxide are present on the Al-Cu-Fe-Mn particle and matrix. When dipped in an acidic ZPO coating solution, the oxide covering the Al-Cu-Mg particle is etched most easily, and metallic Cu near the surface makes that region most cathodic, allowing more coating deposition compared with the other regions. The oxides on the Al-Cu-Fe-Mn and matrix regions are similar, thereby confirming that the observed differences in ZPO coating characteristics at these two regions arise from their underlying electrochemical characteristics. Immersion of a coated 2024-Al sample in corrosive NaCl solution for extended periods indicates that the ZPO provides better protection to the second-phase particles than to the matrix. (C) 2008 Elsevier B.V. All rights reserved.},
	keywords = {7075-T6, ALKALINE STABILITY, aluminum alloy, ALUMINUM-ALLOY, Auger electron spectroscopy, BEHAVIOR, corrosion, CORROSION PROTECTION, INITIATION, MICROSTRUCTURE, NI2+, PARTICLES, PHASE, surface oxide, zinc phosphating},
	isbn = {0169-4332},
	url = {<Go to ISI>://000255511700063},
	author = {Akhtar, A. S. and Wong, P. C. and Wong, K. C. and Mitchell, K. A. R.}
}
@article {513,
	title = {Some observations for effects of copper on zinc phosphate conversion coatings on aluminum surfaces},
	journal = {Surface \& Coatings Technology},
	volume = {155},
	number = {1},
	year = {2002},
	note = {ISI Document Delivery No.: 563RDTimes Cited: 13Cited Reference Count: 9},
	month = {Jun},
	pages = {46-50},
	type = {Article},
	abstract = {X-Ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and electrochemical measurements have been used to characterize zinc phosphate (ZPO) conversion coatings, formed on high-purity aluminum surfaces, after dipping in coating baths containing different concentrations of Cu2+ up to 50 ppm. Significant variations in the morphology, adhesion and corrosion protection afforded by the ZPO coatings are especially observed as the Cu2+ in the bath varies from 0 to 10 ppm. Comparisons are made with the effects of surface Cu segregation on ZPO coatings formed in a previous study made on Al-2024-T3 alloy. (C) 2002 Elsevier Science B.V. All rights reserved.},
	keywords = {ALLOY, aluminum, corrosion, photoetectron spectroscopy, scanning electron microscopy, zinc phosphating},
	isbn = {0257-8972},
	url = {<Go to ISI>://000176268600007},
	author = {Sun, X. and Susac, D. and Li, R. and Wong, K. C. and Foster, T. and Mitchell, K. A. R.}
}
