Metals 2014, 4(3), 322-334; doi:10.3390/met4030322
Article

Mineralogical Transformation and Electrochemical Nature of Magnesium-Rich Primers during Natural Weathering

email, email, email and * email
Received: 15 May 2014; in revised form: 14 June 2014 / Accepted: 23 June 2014 / Published: 3 July 2014
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Magnesium-rich primers (MgRP) have generated great interest as a promising alternative to chromium-based primers for the protection of aluminum substrates but their performance during exterior exposure has not been well documented. This paper focuses on the evaluation of MgRP during natural weathering to gain insight into its mineralogical phase transformation and electrochemical nature. Control studies were conducted on Mg and AA2024-T3 coupons. The results indicate that Mg particles in MgRP transform into a variety of hydroxide, carbonate, and hydroxy carbonates. During natural weathering, CO2 inhibited the dissolution of both Mg and AA2024-T3 as a result of protective carbonate layer formation in the coating.
Keywords: magnesium; corrosion; natural weathering
PDF Full-text Download PDF Full-Text [2627 KB, uploaded 3 July 2014 09:05 CEST]

Export to BibTeX |
EndNote


MDPI and ACS Style

Pathak, S.S.; Blanton, M.D.; Mendon, S.K.; Rawlins, J.W. Mineralogical Transformation and Electrochemical Nature of Magnesium-Rich Primers during Natural Weathering. Metals 2014, 4, 322-334.

AMA Style

Pathak SS, Blanton MD, Mendon SK, Rawlins JW. Mineralogical Transformation and Electrochemical Nature of Magnesium-Rich Primers during Natural Weathering. Metals. 2014; 4(3):322-334.

Chicago/Turabian Style

Pathak, Shashi S.; Blanton, Michael D.; Mendon, Sharathkumar K.; Rawlins, James W. 2014. "Mineralogical Transformation and Electrochemical Nature of Magnesium-Rich Primers during Natural Weathering." Metals 4, no. 3: 322-334.

Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert