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Alkali resistance,microstructural and mechanical performance of zirconia-coated basalt fibers
Affiliation:1. Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Straße 6, 01069 Dresden, Germany;2. Institute of Material Science, Technische Universität Dresden, 01062 Dresden, Germany;3. Surrey Materials Institute, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, United Kingdom;1. Shanxi Province Key Laboratory of Functional Nanocomposites, North University of China, Taiyuan, 030051, China;2. School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China;1. Polymer Processing Division, Institute of Materials Technology, Faculty of Mechanical Engineering and Management, Poznan University of Technology, Piotrowo 3, 61-138 Poznań, Poland;2. Faculty of Chemical Technology and Engineering, University of Science and Technology in Bydgoszcz, Seminaryjna 3, 85-326 Bydgoszcz, Poland;1. Laboratory of Environmental Science and Technology, The Xinjiang Technical Institute of Physics and Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, Dresden 01069, Germany;1. Department of Chemistry, Inha University, 100 Inharo, Incheon, Republic of Korea;2. Department of Chemistry, Chungbuk National University, Cheongju, 360-764, Republic of Korea;3. Department of Mechanical Engineering, Kyung Hee University, Yongin, 446-701, Republic of Korea
Abstract:Sol–gel approach was developed to apply zirconia coatings on basalt fibers. Dense or porous ZrO2 coatings were obtained, depending on the process parameters. The alkali resistance of uncoated and ZrO2-coated basalt fibers in alkali solution was studied. The morphology, elemental and phase composition of etched fibers as a function of etching time were studied by means of a set of analytical methods. A scheme of etching of as-received and coated basalt fiber was proposed. Zirconia coating slows down the corrosion of basalt fiber in alkali solution. The denser zirconia coating slows down the corrosion to a higher extent than the porous coating. The uncoated and coated basalt fibers were tested in mini composites with cement matrix. It was shown that the surface of the coated fiber is affected by the alkaline medium of the cement matrix to a smaller extent than the surface of as-received basalt fiber.
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