Direct observation of sintering mechanics of a single grain boundary
| Project/Area Number |
23360319
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
WAKAI Fumihiro 東京工業大学, 応用セラミックス研究所, 教授 (30293062)
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| Co-Investigator(Kenkyū-buntansha) |
AKATSU Takashi 東京工業大学, 応用セラミックス研究所, 准教授 (40231807)
SHINODA Yutaka 東京工業大学, 応用セラミックス研究所, 助教 (30323843)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥13,650,000 (Direct Cost: ¥10,500,000、Indirect Cost: ¥3,150,000)
Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2012: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2011: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
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| Keywords | 焼結 / セラミックス / 粒界拡散 / 粒界エネルギー / 異方性 / 表面拡散 / 連続体力学 / 緻密化 / 凝集体 / 体拡散 / 表面エネルギー / 金 / 集束イオンビーム |
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| Research Abstract |
Shrinkage in sintering is the result of the motion of many particles, which interact with their neighbors. A method to analyze the mechanics of sintering of a single grain boundary was developed by using specimens fabricated by focused ion beam micro-machining (FIB). This method determined the grain boundary energy and the grain boundary energy which are dependent on crystallographic orientation. The microscopic sintering force acting between two particles was used to develop the concept of sintering stress tensor in macroscopic continuum mechanics of sintering. This model predicted the effect of the local microstructure on anisotropic shrinkage, and the tensor virial equation of evolving surfaces in sintering of aggregates of particles was proposed.
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Report
(4 results)
Research Products
(48 results)
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[Presentation] 単一粒界の焼結機構の直接観察2012
Author(s)
若井史博, 福留寛隆, 小林範浩, 御崎智之, 篠田豊, 赤津隆, 曽根正人, 肥後矢吉
Organizer
日本金属学会 2012秋期講演大会
Place of Presentation
愛媛大学
Year and Date
2012-09-17
Related Report
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