Effect of several inorganic additives on microstructure and properties of microarc oxidation coating on Aluminum alloy - Details

Author：

Zhang, C. (Zhang, C..) (Scholars：张弛) | Zhu, L. (Zhu, L..) | Zhang, Y. (Zhang, Y..) (Scholars：张勇) | Ma, J. (Ma, J..)

Indexed by：

Scopus PKU CSCD

Abstract：

Several　inorganic　additives　were　added　into　the　electrolyte　to　improve　surface　properties　of　the　ceramic　coating　produced　by　micro-arc　oxidation　process　on　aluminum　alloy.　The　phase　constituents　and　microstructure　of　the　prepared　MAO　coating　were　characterized　by　means　of　X-ray　diffractometer　(XRD)　and　scanning　electron　microscope　(SEM)　respectively.　The　abrasive　and　corrosion　resistance　of　the　MAO-coating　are　examined　by　miniature　wear　instrument　and　electrochemical　measurement.　As　adding　micro-powder　of　alumina,　potassium　hydroxide,　sodium　pyrophos-phate-.　sodium　tungstate　and　nano-particles　of　silicon　carbide　in　the　electrolyte,　the　holes　on　MAO-coating　become　less　and　smaller,　and　thereby　the　properties　of　wear-resistance　and　corrosion　resistance　of　the　MAO-coating　are　enhanced.

Keyword：

Abrasive resistance; Electrochemical corrosion resistance; Inorganic additive; Microarc oxidation; Microstructure

Author Community：

[ 1 ] [Zhang, C.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Zhu, L.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Zhang, Y.]Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Ma, J.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China