Material design to realize fine geometries porcelain with large, thin, and precise shape

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K12901
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 01070:Theory of art practice-related
• Research Institution: Saga University
• 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)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: Strengthening porcelain / Pyroplastic deformation / Near zero shrinkage / Water absorption / Densification / Mullite / Anorthite / Arita-yaki

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.

Free Research Field

セラミックス

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.