Influence of Ni additions on the microstructures and properties of laser clad CuAl10 coatings - Details

Author：

Yang, Jiaoxi (Yang, Jiaoxi.) (Scholars：杨胶溪) | Wen, Qiang (Wen, Qiang.) | Li, Ziyang (Li, Ziyang.) | Xiao, Zhiyong (Xiao, Zhiyong.)

Indexed by：

EI Scopus PKU CSCD

Abstract：

To　further　improve　the　corrosion　resistance　performance　of　CuAl10　alloy　laser　cladding　coating,　the　influence　of　Ni　additions　on　the　microstructures　and　properties　of　CuAl10　coatings　produced　by　laser　cladding　is　investigated.　Laser　cladding　is　performed　on　316L　stainless　steel　surface　by　a　HPDL-D30　diode　laser　with　direct　injection　powders.　Laser　cladding　coatings　are　characterized　by　scanning　electron　microscopy　(SEM),　energy　dispersive　X-ray　spectroscopy　(EDS),　X-ray　diffraction　(XRD)　and　microhardness　tester.　The　electrochemical　corrosion　behavior　of　cladding　layers　is　evaluated.　The　results　show　that　the　coating　have　an　excellent　metallurgical　bonding　with　the　substrate　and　homogeneous　microstructure.　The　addition　of　Ni　element　can　significantly　improve　the　corrosion　resistance　performance　of　laser　cladding　coatings.　The　corrosion　resistance　of　claddings　increase　with　increasing　the　mass　fraction　of　Ni,　reaching　a　maximum　at　6.0%.　The　cladding　without　Ni　mainly　consists　of　α-Cu,　α-Fe,　AlFe3　and　Cu9Al4,　while　the　addition　of　Ni　element　cladding　mainly　consists　of　α-Cu,　α-(Cu,Ni),　AlCu3　and　Cu9Al4.　©,　2015,　Science　Press.　All　right　reserved.

Keyword：

Aluminum alloys Iron alloys Corrosive effects Laser cladding Cladding (coating) Scanning electron microscopy Energy dispersive spectroscopy Corrosion resistance Binary alloys Corrosion resistant alloys Direct injection Corrosion resistant coatings Copper alloys Aluminum corrosion Microstructure Copper corrosion Electrochemical corrosion

Author Community：

[ 1 ] [Yang, Jiaoxi]Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Wen, Qiang]Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Li, Ziyang]Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Xiao, Zhiyong]Institute of Laser Engineering, Beijing University of Technology, Beijing; 100124, China