RECOVERY OF NEUTRON-IRRADIATION-INDUCED DEFECTS AND GAS REREASE OBSERVED BY DALATOMETRY-MASS SPECTROMETRY SYSTEM

测厚仪-质谱系统观测到的中子辐照缺陷和气体再释放的恢复

• 批准号: 23360424
• 负责人: YANO TOYOHIKO
• 金额: $ 12.15万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23360424/
• 关键词: 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; 原子力材料・核燃料; 中性子照射; 長さ測定; 質量分析計; 質量分析; SiAlON; SiAl0N

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.

有几种陶瓷是核聚变和裂变核反应堆所必需的。并且认识到各种陶瓷的辐照响应受其晶体结构和原子成键性质的影响。然而，对辐照诱导晶体缺陷及其热稳定性的识别还没有充分的了解，也没有得到统一的机制。此外，转化氦的近期效应可能与结构缺陷有关，然后会发生更复杂的现象。本研究采用高精度膨胀法和质谱联用技术，对几种陶瓷的宏观长度恢复进行了精确观测，并确定了碳化硅、氮化硅和SiAlON多晶的辐照诱导晶体缺陷种类和热稳定性。

项目成果

Change in XRD peak-shift of 3C-SiC due to Neutron Irradiation and Post-Irradiation Isochronal Annealing

中子辐照和辐照后等时退火引起的 3C-SiC XRD 峰移变化

• 发表时间: 2011
• 期刊: J. Nucl. Mater
• 作者: T. Sawabe;K. Yoshida and T. Yano
• 通讯作者: K. Yoshida and T. Yano

Recovery behavior of points defects after low-dose neutron irradiation of sintered α- and β-SiC by macroscopic length and XRD measurements

通过宏观长度和 XRD 测量烧结 α-和 β-SiC 低剂量中子辐照后点缺陷的恢复行为

• 发表时间: 2011
• 作者: T. Yano;Y. Futamura;S. Yamazaki;T. Sawabe and K. Yoshida
• 通讯作者: T. Sawabe and K. Yoshida

Analysis of recovery process of low-dose neutron irradiation-induced defects in silicon nitride-based ceramics by thermal annealing

• DOI: 10.1016/j.jnucmat.2014.07.066
• 发表时间: 2014-12
• 期刊: Journal of Nuclear Materials
• 影响因子: 3.1
• 作者: Areerak Rueanngoen;K. Kanazawa;M. Imai;Katsumi Yoshida;T. Yano

Recovery behavior of point defects after low-dose neutron irradiation at ∼423 K of sintered 6H–SiC by lattice parameter and macroscopic length measurements

• DOI: 10.1016/j.jnucmat.2013.01.296
• 发表时间: 2013-11
• 期刊: Journal of Nuclear Materials
• 影响因子: 3.1
• 作者: T. Yano;Yusuke Futamura;Saishun Yamazaki;T. Sawabe;Katsumi Yoshida

Annealing behavior of SiAlON ceramics neutron-irradiated in JMTR up to a fluence of 8.5x1024 n/m2

SiAlON 陶瓷在 JMTR 中中子辐照高达 8.5x1024 n/m2 的注量下的退火行为

• 作者: Areerak Rueanngoen;Masamitsu Imai;Katsumi Yoshida and Toyohiko Yano
• 通讯作者: Katsumi Yoshida and Toyohiko Yano