The study of near-net shape lithium aluminosilicate glass-ceramics by direct ink writing |
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| Affiliation: | 1. School of Materials Science and Engineering, Shandong university of technology, Zibo 255000, China;2. Shandong Industrial Ceramics Research & Design Institute Co., Ltd., Zibo 255000, PR China;3. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China;1. School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610054, China;2. Tianjin Dagang Oilfield Shengda Technology Company Limited 300280, China;3. Mianyang Westmag Technology Corporation Limited 621000, China;1. School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China;2. School of Textile Science and Engineering, Xi’an Polytechnic University, Xi’an, Shaanxi 710048, China;3. State Key Laboratory for Manufacturing System Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China;1. Henan Key Laboratory of Utilization of Non-metallic Mineral in the South of Henan, Xinyang Normal University, Xinyang 464000, China;2. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China;3. Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China;1. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China;2. University of Chinese Academy of Sciences, Beijing 100049, PR China;1. School of Material Science and Engineering, Zhengzhou University, Henan 450001, China;2. School of Material Science and Engineering, Luoyang Institute of Science and Technology, Henan 471023, China;3. State Key Laboratory of Advanced Refractories, Sinosteel Luoyang Institute of Refractories Research Co., Ltd., Henan 471039, China |
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| Abstract: | 3D printing, a competitive manufacturing technology, has opened up new possibilities for fabricating complex structure ceramic components, but near-net forming is still difficult. This work presented a kind of near-net forming lithium aluminosilicate (LAS) glass-ceramics using direct ink writing (DIW) method by controlling thermal shrinkage. To achieve this goal, a high solid-loading ink was prepared using low thermal expansion LAS glass-ceramic powder containing β-spodumene as raw material. And we comprehensively evaluated the effects of the rheological properties of the slurry and sintering process on the thermal and mechanical performances. Attributed to the restricted sintering activity and thermal deformation of LAS glass-ceramic particles, the 3D-printed samples sintered at 1300 ?C for 2 h showed an average linear shrinkage of 0.84% with a flexural strength of 45.59 ± 2.82 MPa and a compressive strength of 65.58 ± 3.99 MPa, respectively. The results suggested that LAS glass-ceramics were excellent candidate materials for near-net forming 3D printing. |
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| Keywords: | Lithium aluminosilicate glass-ceramics Direct ink writing Near-net forming Low coefficiency of thermal expansion |
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