Effects of TiO2 coating on microstructure and mechanical properties of magnesium matrix composite reinforced with Mg2B2O5w |
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| Affiliation: | 1. Western Norway University of Applied Sciences, Department of Computing, Mathematics and Physics, Inndalsveien 28, Box 5063, Bergen, Norway;2. Center for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, Box 1033, Blindern, N-0315 Oslo, Norway;1. Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, and College of Materials Science and Engineering, Jilin University, Changchun 130012, China;2. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130012, China;3. Department of Material Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180, United States;4. Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211-7010, United States;5. College of Materials Science and Engineering, Jilin University, Changchun 130012, China;1. School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;2. Information Center, Second Military Medical University, Shanghai 200433, China;3. Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, China;4. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China |
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| Abstract: | The interface between the reinforcement and the matrix is very important for metal matrix composites. The effects of TiO2 coating on microstructure and mechanical properties of Mg2B2O5w-reinforced AZ91D magnesium matrix composite fabricated by squeeze casting technique were studied. The results indicate the flexural strength and flexural modulus of Mg2B2O5w/TiO2/AZ91D composite is 40% and 35% up on that of Mg2B2O5w/AZ91D composite. The reason is that the MgO interfacial product resulting from the reaction between the TiO2 coating and the liquid Mg can enhance the interfacial bonding strength and increase the load transfer from the matrix to the reinforcement, which leads to higher mechanical properties of Mg2B2O5w/TiO2/AZ91D composite. |
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