Effect of Mg2+ on the microstructure and corrosion resistance of the phosphate conversion coating on hot-dip galvanized sheet steel

a-[ordm Mg2+ in the phosphate solution reduces pores in the phosphate coating on HDG steel. a-[ordm The phosphate coating with fewer pores display a better corrosion resistance. a-[ordm Mg2+ improves the corrosion resistance of phosphated HDG steel. a-[ordm Mg2+ distributes uniformly in Zn phosphate...

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Veröffentlicht in:Corrosion science 2010-12, Vol.52 (12), p.3907-3916
Hauptverfasser: TSAI, Cheng-Yang, LIU, Jen-Shou, CHEN, Pei-Li, LIN, Chao-Sung
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creator TSAI, Cheng-Yang
LIU, Jen-Shou
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description a-[ordm Mg2+ in the phosphate solution reduces pores in the phosphate coating on HDG steel. a-[ordm The phosphate coating with fewer pores display a better corrosion resistance. a-[ordm Mg2+ improves the corrosion resistance of phosphated HDG steel. a-[ordm Mg2+ distributes uniformly in Zn phosphate and (Zn, Mg) phosphate hydrate coating. a-[ordm Mg2+ accelerates the nucleation of (Zn, Mg) phosphate by enhanced impingements. The effect of Mg2+ in the phosphate solution on the microstructural evolution and corrosion resistance of the coating on hot-dip galvanized steel has been explored. Surface morphology observations reveal that increasing the solution Mg2+ concentration increases the population density and refines the grain size of the phosphate grains. In the presence of Mg2+, the phosphate coating is composed of mixed Zn phosphate hydrate and (Zn, Mg) phosphate hydrate. Furthermore, elevating Mg2+ in the solution reduces the porosity of the phosphate coating. As a result, the corrosion resistance of the phosphate coating is improved.
doi_str_mv 10.1016/j.corsci.2010.08.007
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Metallurgy</topic><topic>Phosphate coatings</topic><topic>Phosphates</topic><topic>Production techniques</topic><topic>Protective coatings</topic><topic>Steels</topic><topic>Surface treatment</topic><topic>Zinc</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>TSAI, Cheng-Yang</creatorcontrib><creatorcontrib>LIU, Jen-Shou</creatorcontrib><creatorcontrib>CHEN, Pei-Li</creatorcontrib><creatorcontrib>LIN, Chao-Sung</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Corrosion Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology &amp; Engineering</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><jtitle>Corrosion science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>TSAI, Cheng-Yang</au><au>LIU, Jen-Shou</au><au>CHEN, Pei-Li</au><au>LIN, Chao-Sung</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Mg2+ on the microstructure and corrosion resistance of the phosphate conversion coating on hot-dip galvanized sheet steel</atitle><jtitle>Corrosion science</jtitle><date>2010-12-01</date><risdate>2010</risdate><volume>52</volume><issue>12</issue><spage>3907</spage><epage>3916</epage><pages>3907-3916</pages><issn>0010-938X</issn><eissn>1879-0496</eissn><coden>CRRSAA</coden><abstract>a-[ordm Mg2+ in the phosphate solution reduces pores in the phosphate coating on HDG steel. a-[ordm The phosphate coating with fewer pores display a better corrosion resistance. a-[ordm Mg2+ improves the corrosion resistance of phosphated HDG steel. a-[ordm Mg2+ distributes uniformly in Zn phosphate and (Zn, Mg) phosphate hydrate coating. a-[ordm Mg2+ accelerates the nucleation of (Zn, Mg) phosphate by enhanced impingements. 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source ScienceDirect Journals (5 years ago - present)
subjects Applied sciences
Corrosion
Corrosion environments
Corrosion resistance
Exact sciences and technology
Hydrates
Magnesium
Metals. Metallurgy
Phosphate coatings
Phosphates
Production techniques
Protective coatings
Steels
Surface treatment
Zinc
title Effect of Mg2+ on the microstructure and corrosion resistance of the phosphate conversion coating on hot-dip galvanized sheet steel
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