2013 Fiscal Year Final Research Report
RECOVERY OF NEUTRON-IRRADIATION-INDUCED DEFECTS AND GAS REREASE OBSERVED BY DALATOMETRY-MASS SPECTROMETRY SYSTEM
| Project/Area Number |
23360424
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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 |
Nuclear engineering
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
YANO TOYOHIKO 東京工業大学, 原子炉工学研究所, 教授 (80158039)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHIDA Katsumi 東京工業大学, 原子炉工学研究所, 助教 (20337710)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | 中性子照射欠陥 / セラミックス / 熱膨張計 / 回復過程 / 核変換ガス / 炭化ケイ素 / 窒化ケイ素 / サイアロン |
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| Research Abstract |
Several kinds of ceramics are necessary for fusion and fission nuclear reactors.and it is recognized that irradiation responses of various kinds of ceramics are influenced by their crystal structures and atomic bonding natures. However,identification of irradiation-induced crystalline defects and their thermal stabilities is not yet sufficientry understood, and unified mechnism is not obtained. Furthermore, recentry effects of transmuted He are suggested to be associated with structural defects then more complex phenomena occur. In this research, macroscopic length recovery for several kinds of ceramics were precisely observed by means of high-precision dilatometry coupled with mass spectroscopy, and then it was defined that the kinds of irradiation-induced crystalline defects and thermalstabilities, for silicon carbide, silicon nitride and SiAlON polymorphs.
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