1988 Fiscal Year Final Research Report Summary
Emphanced effect in toughness of ceramics using nuclear transition by reactor thermal neutron irradiation.
| Project/Area Number |
62580181
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Nuclear engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
HIROYUKI YOSHIDA Kyoto University, 原子炉実験所, 助教授 (00027442)
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| Co-Investigator(Kenkyū-buntansha) |
KOZO ATOBE Naruto University of Education, 学校教育学部, 助教授 (90027467)
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| Project Period (FY) |
1987 – 1988
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| Keywords | reactor irradiation effect / ceramics / miniature-size piece / flexural strength / Vickers hardness / 破壊靱性値 |
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| Research Abstract |
The irradiation effect of reactor irradiated oxides(Al_2O_3 single and polycrystal (S,P),MGO.Al_2O_3(P) and Zro_2(P)) and non-oxides(SiC and Si_3N_4) were study by some mechanical testing methods. The specimens were irradiated up to a dose of 1 x 10^<19> fast neutron/cm^2(E 0.1 MeV) at 25 and 360 K, respectively.
Flexural strength of the specimen was measured at 77 and 300 K using the three-point bending test of miniture-size piece(12 x 2 x 0.5 mm<@D13@>D1). It was shown that this evaluation method was available to estimate the flexural strength of the irradiated ceramics. Vickers hardness(Hv) and fracture toughness(K<@D21c@>D1)for the specimen were also evalutaed by the indenter and the indentation micro-fracture(IM) technique. The mechanical properties of Al<@D22@>D2O<@D23@>D2(P), MgO.Al<@D22@>D2O<@D23@>D2(P), SiC and Si<@D23@>D2N<@D24@>D2 exhibited no significantly change even after the irradiation up to a dose of 1 x 10<@D119@>D1fast neutron/cm<@D12@>D1 at 360 K.
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