Granule performance of zirconia/alumina composite powders spray-dried using polyvinyl pyrrolidone binder |
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| Affiliation: | 1. Department of Advanced Materials Engineering, Sejong University, 98 Kunja-dong, Seoul 143-747, South Korea;2. Department of Chemical Engineering, Inha University, Inchon, South Korea;1. Department of Materials Engineering, Isfahan University of Technology, Isfahan, P. O. Box. 84156-83111, Islamic Republic of Iran;2. Department of Material Engineering, Malek Ashtar University of Technology, Isfahan, Shahin-shahr, Islamic Republic of Iran;1. School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China;2. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, Xuzhou 221116, China;3. College of Materials Science and Engineering, Nanjing Technological University, Nanjing 210009, China;1. School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China;2. Jiangsu Key Laboratory of Advanced Laser Materials and Devices, Jiangsu Normal University, Xuzhou 221116, China;3. College of Materials Science and Engineering, Nanjing Technological University, Nanjing 210009, China;1. Research Center for New Energy Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;2. University of Chinese Academy of Sciences, Beijing 110049, China;3. Shanghai Nanotechnology Promotion Center, Shanghai 200237, China;1. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China;2. Institute of New Materials, Guangzhou Research Institute of Non-ferrous Metals, Guangzhou 510650, China;3. School of Public Health, Shandong University, Jinan 250012, China;1. Department of Materials Engineering, Isfahan University of Technology, P.O. Box. 84156-83111, Isfahan, Islamic Republic of Iran;2. Department of Materials Engineering, Malek Ashtar University of Technology, Isfahan, Shahin-shahr, Islamic Republic of Iran;3. Young Researchers and Elite Club, Kashan Branch, Islamic Azad University, Kashan, Iran |
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| Abstract: | Polyvinyl pyrrolidone (PVP) was used as a binder in spray-drying a slurry containing zirconia/alumina composite powder and its influence on granulation and granule deformability was compared with those of polyvinyl alcohol (PVA) and polyethylene glycol–hydroxyethyl cellulose cobinder (PEG–HEC). Although the most spherical solid granules were obtained from the slurry containing PEG–HEC, the granules containing PVP were the most deformable during compaction. It was apparent that a high-viscosity organic additive mixture added to the slurry resulted in highly spherical solid granules, and a low Tg of the mixture led to a high deformability. The flexural strengths of composites prepared from granules containing PVP, PEG–HEC, and PVA were 634, 578, and 468 MPa, respectively, which corresponds to the ascending order of Tg of the binders mixed with plasticizers. |
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