Model development for estimating stress generation during sintering of ceramics laminates

2016 Fiscal Year Final Research Report

• Project/Area Number: 25420706
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Inorganic materials/Physical properties
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: YASUDA Kouichi 東京工業大学, 物質理工学院, 准教授 (20191306)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: セラミックス / 積層材 / 焼結 / 成形体 / 均質性 / 欠陥 / 顆粒の崩壊 / 確率論

Outline of Final Research Achievements

Based on the changes in thermo-elastic properties of several ceramic materials from powder compact state to sintered body state, formulation was done on a generalized model for estimating stress generation during sintering of ceramics laminates, including several combinations of constitutive equations such as elastic, elasto-plastic, and visco-elastic materials. Form the collaborative researcher’s latest output, the priority of this project moved to homogeneity of powder compact because it was also strongly related to the cracking during sintering. The stochastic model was developed to express granule collapse probability in a powder compact, and homogeneity improvement was discussed with the model. Finally, accomplishment of this project was summarized.

Free Research Field

固体力学，材料強度学，統計力学，複合材料