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耐熱セラミックス複合材料の照射試験,2; 第2次(98M-41A),第3次(99M-30A)予備照射試験中間報告

An Irradiation test of heat-resistant ceramic composite materials, 2; Interim report on post-irradiation examinations of the second and third preliminary test, 98M-41A, 99M-30A

馬場 信一; 根本 誠*; 相沢 静男; 山地 雅俊*; 石原 正博; 沢 和弘

Baba, Shinichi; Nemoto, Makoto*; Sozawa, Shizuo; Yamaji, Masatoshi*; Ishihara, Masahiro; Sawa, Kazuhiro

高温工学試験研究炉(HTTR)を用いた高温工学に関する先端的基礎研究の課題の1つとして「耐熱セラミックス複合材料の照射損傷効果に関する研究」のため、材料試験炉を用いて一連の予備照射試験を進めている。本報告は、このうちの第2次及び第3次の照射試験について記載したものである。両試験の照射温度は973K-1173K及び1273K-1473K,高速中性子照射量1$$times$$10$$^{25}$$m$$^{-2}$$( E$$>$$1MeV)の照射条件のもとで行った試料について、直径寸法の基本統計値,寸法変化及び熱膨張率の結果について報告する。

The Japan Atomic Energy Research Institute (JAERI) has been carrying out the research on radiation damage mechanism of heat-resistant ceramics composite materials, as one of the subjects of the innovative basic research on high temperature engineering using the High Temperature Engineering Test Reactor (HTTR). A series of preliminary irradiation tests is being made using the Japan Materials Testing Reactor (JMTR). The present report describes results of post-irradiation examinations so far on specimens irradiated in the second and third capsule, designated 98M-41A and 99M-30A, to fast neutron fluences of 1.0$$times$$10$$^{25}$$m$$^{-2}$$(E$$>$$1MeV) at temperatures of 973K-1173K and 1273K-1473K. The PIE were conducted as the fundamental statistics index of the diametral dimensions for irradiated specimen, irradiation induced dimensional change rate and thermal expansion rate.

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