Wear resistance of Zr/WC composite coatings on Cr12MoV steel surface by electric spark deposition
|
摘要
Zr/WC composite coating was prepared on the surface of Cr12MoV steel by electric spark deposition technology to change its surface properties. The surface and worn surface morphology of the coating were observed using scanning electron microscope. Dry friction and wear tests of the coatings were carried out at room temperature. The results show that the coating is continuous and uniform, and the thickness was about 50-60 μm. The microhardness of the coating surface was highest at 1140 HV_(200g), which was significantly higher than that of the substrate. The ear tests results show that the wear weight loss, wear volume and wear rate follow the following rules: Cr12MoV>WC coating> Zr/WC composite coating.
Zr/WC composite coating was prepared on the surface of Cr12MoV steel by electric spark deposition technology to change its surface properties. The surface and worn surface morphology of the coating were observed using scanning electron microscope. Dry friction and wear tests of the coatings were carried out at room temperature. The results show that the coating is continuous and uniform, and the thickness was about 50-60 μm. The microhardness of the coating surface was highest at 1140 HV_(200g), which was significantly higher than that of the substrate. The ear tests results show that the wear weight loss, wear volume and wear rate follow the following rules: Cr12MoV>WC coating> Zr/WC composite coating.
Zr/WC composite coating was prepared on the surface of Cr12MoV steel by electric spark deposition technology to change its surface properties. The surface and worn surface morphology of the coating were observed using scanning electron microscope. Dry friction and wear tests of the coatings were carried out at room temperature. The results show that the coating is continuous and uniform, and the thickness was about 50-60 μm. The microhardness of the coating surface was highest at 1140 HV_(200g), which was significantly higher than that of the substrate. The ear tests results show that the wear weight loss, wear volume and wear rate follow the following rules: Cr12MoV>WC coating> Zr/WC composite coating.
引文
[1] Dong S J,Xiong C,Luo C.Recent progress in the research of EDM deposition surface technology.Introduction,2008,22(11):66-68.
[2] Wang R J,Qian Y Y,Huang X O,et al.TC1 alloy surface EDM deposition WC-8Co coating interface behavior.Journal of Welding,2003,24(5):88-90.
[3] Zhang F J,Ma L Q,Zhang G D,et al.Interface behavior and microstructure transformation of welded joint of 35CrMo steel by electro-spark deposition.China Welding,2005,14(1):15-l8
[4] Wang Y L,Yu H,Shi H X,et al.Interface behavior of WC deposited by EDS on 40Cr steel surface.Journal of Materials Heat Treatment,2013,34(8):173-176.
[5] Wang M C,Wang W F,Xie Y J.Electro-spark epitaxial deposition of NiCoCrAlYTa alloy on directionally solidified nickel-based superalloy.Transactions of Nonferrous Metals Society of China,2010,20(5):795-801.
[6] Lin N M,Li M L,Zou J J,et al.Study on fabrication and corrosion resistance of Ni-based alloy coating on P110 steel by electrospark deposition.Journal of Materials Engineering and Performance,2013,22(5):1365-1370.
[7] Burkoy A A,Pyachin S A.Investigation of WC-Co electrospark coatings with various carbon contents.Journal of Materials Engineering and Performance,2014,23(6):2034-2042.
[8] Jamnapara N I,Avtani D U,Nayak V S.Microstructural studies of electrospark deposited aluminide coatings on 9Cr steels.Surface Engineering,2012,28(9):700-704.
[9] Wang J S,Zhang Z Z,Yan Z W,et al.Interface behavior of WC-4Co composite layer deposited by EDS.Chinese Journal of Nonferrous Metals,2014,24(11):2850-2854.
[10] Lin C,Huang X B,Lin H C,et al.Study on wear resistance of Co-based alloy-WC composite coating by vacuum melting.Mechanical engineering materials,2003,27(6):40-45.
[11] Wang J S,Lu H X,Yan Z W,et al.Friction and wear properties of electrospark deposits on cast steel surface.Journal of Material Heat Treatment,2015,36(1):169-172.
[12] Leng C Y,Zhang X,Zhou R,et al.Study on wear resistance of Ti6Al4V alloy implanted with Ta ion.Rare Metal Materials and Engineering,2008,37(3):557-560.
[13] Suh N P.The dilamination theory of wear.Wear,1973,125(1):248-25.
[2] Wang R J,Qian Y Y,Huang X O,et al.TC1 alloy surface EDM deposition WC-8Co coating interface behavior.Journal of Welding,2003,24(5):88-90.
[3] Zhang F J,Ma L Q,Zhang G D,et al.Interface behavior and microstructure transformation of welded joint of 35CrMo steel by electro-spark deposition.China Welding,2005,14(1):15-l8
[4] Wang Y L,Yu H,Shi H X,et al.Interface behavior of WC deposited by EDS on 40Cr steel surface.Journal of Materials Heat Treatment,2013,34(8):173-176.
[5] Wang M C,Wang W F,Xie Y J.Electro-spark epitaxial deposition of NiCoCrAlYTa alloy on directionally solidified nickel-based superalloy.Transactions of Nonferrous Metals Society of China,2010,20(5):795-801.
[6] Lin N M,Li M L,Zou J J,et al.Study on fabrication and corrosion resistance of Ni-based alloy coating on P110 steel by electrospark deposition.Journal of Materials Engineering and Performance,2013,22(5):1365-1370.
[7] Burkoy A A,Pyachin S A.Investigation of WC-Co electrospark coatings with various carbon contents.Journal of Materials Engineering and Performance,2014,23(6):2034-2042.
[8] Jamnapara N I,Avtani D U,Nayak V S.Microstructural studies of electrospark deposited aluminide coatings on 9Cr steels.Surface Engineering,2012,28(9):700-704.
[9] Wang J S,Zhang Z Z,Yan Z W,et al.Interface behavior of WC-4Co composite layer deposited by EDS.Chinese Journal of Nonferrous Metals,2014,24(11):2850-2854.
[10] Lin C,Huang X B,Lin H C,et al.Study on wear resistance of Co-based alloy-WC composite coating by vacuum melting.Mechanical engineering materials,2003,27(6):40-45.
[11] Wang J S,Lu H X,Yan Z W,et al.Friction and wear properties of electrospark deposits on cast steel surface.Journal of Material Heat Treatment,2015,36(1):169-172.
[12] Leng C Y,Zhang X,Zhou R,et al.Study on wear resistance of Ti6Al4V alloy implanted with Ta ion.Rare Metal Materials and Engineering,2008,37(3):557-560.
[13] Suh N P.The dilamination theory of wear.Wear,1973,125(1):248-25.