Influence of feedstock and spraying parameters on the depositing efficiency and microhardness of plasma-sprayed zirconia coatings |
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| Affiliation: | 1. Interface Engineering Laboratory, Division of Materials and Chemical Engineering, Sun Moon University, Asan, ChungNam 336708, South Korea;2. Plasma Spraying Laboratory, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People''s Republic of China;1. Institute of Solid State Physics, Russian Academy of Science, Moscow District, 2 Academician Ossipyan str., 142432 Chernogolovka, Russia;2. Georg-August-Universität Göttingen, IV. Physikalisches Institut, Friedrich-Hund-Platz 1, D-37077 Göttingen, Germany;1. Université Paris 13, Sorbonne Paris Cité, LSPM CNRS, 99 avenue Jean Baptiste Clément, 93430 Villetaneuse, France;2. Department of Materials Physics, Eötvös Loránd University, Budapest, P.O.B. 32, H-1518, Hungary;3. Nexter-Munitions, 7 route de Guerry, 18000 Bourges, France;4. Université Paul Sabatier, CEMES-CNRS, 29 rue Jeanne Marvig, 31055 Toulouse, France;1. Institute of Materials Science and Engineering, National Taipei University of Technology, Taipei 106, Taiwan;2. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;3. Aerospace Industrial Department Corporation, Taichung 407, Taiwan;1. Centro Atómico Bariloche (CAB) – Comisión Nacional de Energía Atómica (CNEA), Av. Bustillo 9500 S.C. de Bariloche, CP 8400, Argentina;2. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917 (C1033AAJ), Buenos Aires, Argentina |
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| Abstract: | In this work, nanostructured and conventional zirconia coatings were deposited by atmospheric air plasma spraying (APS) under different spraying conditions using spray-dried nanostructured powders and conventional powders as feedstocks, respectively. The microstructures of the feedstocks were characterized by TEM and SEM. The depositing efficiencies for both nanostructured and conventional zirconia coatings deposited under different spraying parameters were comparatively measured. The obtained results revealed that the spray-dried nanostructured powders possessed higher deposition efficiency than that of conventional powders. It is significant from economic view of reducing cost. In addition, the influence of spraying parameters on microstructure and microhardness of zirconia coatings were discussed also. It was found that the microhardness of nanostructured zirconia coatings was larger than that of its counterparts. |
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