| Corrosion resistance of plasma sprayed NiCrAl (ZrO_2 Y_2O_3) thermal barrier coating on 18-8 steel surface |
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| 作者姓名： | CHEN Fei LV Tao DING Hua-dong ZHOU Hai LIU Kai |
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| 作者单位： | School of Mechanical Engineering，Beijing Institute of Petrochemical Technology，Beijing 102617，China，School of Materials Science and Engineering，University of Science and Technology Beijing，Beijing 100083，China，School of Mechanical Engineering，Beijing Institute of Petrochemical Technology，Beijing 102617，China，Department of Material Science and Engineering，Academy of Armored Force Engineering，Beijing 100072，China，School of Mechanical Engineering，Beijing Institute of Petrochemical Technology，Beijing 102617，China，School of Mechanical Engineering，Beijing Institute of Petrochemical Technology，Beijing 102617，China |
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| 摘 要： | 1INTRODUCTION Austeniticstainlesssteelisdevelopedtocom pensateforpoorcorrosionresistanceofmartensite stainlesssteelandoverlargebrittlenessofferrite stainlesssteel.Basicconstituentsofitstypicalal loyare18%Crand8%Ni(massfraction),which isusuallycalledas188s…
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Corrosion resistance of plasma sprayed NiCrAl + (ZrO2 + Y2O3 ) thermal barrier coating on 18 -8 steel surface |
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| CHEN Fei,L Tao,DING Hua-dong,ZHOU Hai,LIU Kai.Corrosion resistance of plasma sprayed NiCrAl (ZrO_2 Y_2O_3) thermal barrier coating on 18-8 steel surface[J].Journal of Central South University of Technology,2005,12(Z2). |
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| Authors: | CHEN Fei L Tao DING Hua-dong ZHOU Hai LIU Kai |
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| Affiliation: | CHEN Fei,L(U) Tao,DING Hua-dong,ZHOU Hai,LIU Kai |
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| Abstract: | The corrosion resistance of NiCrAl (ZrO2 Y2 O3 )thermal barrier coating, formed with the plasma spraying technique, on the 18 - 8 steel surface was investigated. The phase structure and morphology of the coating were analyzed by means of X-ray diffraction(XRD) and scanning electron microscopy(SEM). The electrochemical corrosion behavior of the coating in 1.0 mol/L H2 SO4 solution was studied by using electrochemical measurement methods. The results show that the gradient plasma spraying coating is composed of the NiCrAlY primer coating and the (ZrO2 Y2O3 ) top coating, and the coating thickness is 360 μm. The microhardness of coating reaches 1 100 HV. The corrosion resistance of the plasma sprayed coating of the 18 - 8 steel surface is about 5 times as great as that of the original pattern. The corrosion resistance of the coating is enhanced notably. |
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| Keywords: | plasma spraying NiCrAl (ZrO2 Y2 O3 ) coating corrosion resistance |
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