| Project/Area Number |
21K12901
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 01070:Theory of art practice-related
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| Research Institution | Saga University |
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Principal Investigator |
HAO DONG 佐賀大学, 肥前セラミック研究センター, 助教(2023上席研究員) (80868810)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Project Status |
Completed (Fiscal Year 2023)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | Strengthening porcelain / Pyroplastic deformation / Near zero shrinkage / Water absorption / Densification / Mullite / Anorthite / Arita-yaki / high precision ceramics / strengthening porcelain / pyroplastic deformation / sintering shrinkage / flexural strength / impact strength / near-zero / Al2O3/ZrO2 / Strengthened pottery / Wollastonite / Near-zero / Sintering shrinkage / Liquid sintering / Pytoplastic deformation / Porcelain / Material design / Wollatonite / Near-zero shrinkage |
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| Outline of Research at the Start |
This research aims to design and develop alumina-strengthened porcelain with high densification and low pyroplastic deformation so that the fine geometries porcelain with large, thin, and precise shape can be realized. The research will be performed as follows.
1) One-dimensional and/or high temperature expansion precursor for suppressing the sintering shrinkage;
2) high-temperature crystallization precursor for suppressing the bloating;
3) Fluxing agent for densifying the porcelain and tuning the viscosity.
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| Outline of Final Research Achievements |
In this study, we revealed the mechanism for suppressing pyroplastic deformation and liquid phase sintering shrinkage of alumina-strengthened porcelain. By adjusting the liquid viscosity at high temperatures, both pyroplastic deformation and liquid phase sintering shrinkage could be controlled using IA and IIA oxides or high-temperature crystal precursors. Based on these strategies, porcelain with both small pyroplastic deformation and low water absorption, or porcelain with near-zero sintering shrinkage, can be successfully fabricated. This allows for the creation of fine geometry porcelain with large, thin, and precise shapes. Additionally, to address the low strength and reliability of porcelain, we have improved its strength and toughness by controlling the macro- and micro-prestress introduced by the coating/glaze layer and the strengthening particles, respectively.
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| Academic Significance and Societal Importance of the Research Achievements |
With our control strategies, high-precision porcelain with large, thin, and the precise shapes. can be developed. This is particularly significant for enhancing the value of Hizen ceramics and for developing new high-value-added ceramics through additive manufacturing.
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