Tribological behavior of TZ4YS-MoSi2 composites obtained by Spark Plasma Sintering |
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| Affiliation: | 1. Instituto de Tecnología de Materiales (ITM), Universitat Politècnica de València, Camino de Vera, s/n, 46022, Valencia, Spain;2. Nanoker Research S.L., Polígono Industrial Olloniego, Parcela 22A, nave 5. 33660, Oviedo, Spain;3. Instituto de Cerámica y Vidrio (ICV), Consejo Superior de Investigaciones Científicas (CSIC), Kelsen 5, E-28049, Madrid, Spain;1. Department of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China;2. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, China;3. Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemical and Chemical Engineering, Liaocheng University, Liaocheng, 252059, China;4. Department of Chemistry and Bioscience, Aalborg University, Aalborg, DK-9220, Denmark;1. Federal University of São Carlos, Graduate Program in Materials Science and Engineering (PPGCEM), 13565-905, São Carlos, SP, Brazil;2. Federal University of São Carlos (UFSCar), Department of Materials Engineering (DEMa), 13565-905, São Carlos, SP, Brazil;3. Université Paris-Saclay, ENS Paris-Saclay, CNRS, LMT – Laboratoire de Mécanique et Technologie, 91190 Gif-sur-Yvette, France;1. Interdisciplinary Laboratory of Materials, Department of Mechanical Engineering, Graduate Program on Materials Science and Engineering, Universidade Federal de Santa Catarina, 88040-900, Florianopolis, SC, Brazil;2. Ceramic Materials Group, Graduate Program on Materials Science and Engineering, Universidade do Extremo Sul Catarinense, 88806-000, Criciuma, SC, Brazil |
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| Abstract: | The aim of this work was to evaluate the role of MoSi2 content (5, 10, 15 wt%) in the mechanical and tribological behavior of TZ4YS-MoSi2 composites obtained by colloidal processing and spark plasma sintering (SPS) at 1500 °C. Firstly, the densification of TZ4YS-MoSi2 composite and the shrinkage-rate curves by SPS applying 80 MPa from 1300 °C to 1500 °C is studied. The hardness and fracture toughness values confirmed that up to 99.9% densification is gradually reached with increasing MoSi2 percentage. Secondly, pin-on-disk tribological tests at different distances (1, 5, 15 and 2000 m) with Al2O3 as counterpart were performed to record the behavior of the materials in the initial and final stages of wear. The MoSi2 content was associated to the beginning of the transition from mild to severe wear, higher the amount of MoSi2 faster is the transition. This behavior was correlated with MoSi2 content, which aids the formation of a tribolayer. |
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| Keywords: | Zirconia Rheology Spark Plasma Sintering Wear |
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