Electron microscopy of γ-irradiated tungsten and molybdenum crystals

V. A. Mashtakova, A. A. Salomatin, B. B. Shishkin, A. P. Mamontov, N. N. Nikitenko, I. P. Chernov

Результат исследований: Материалы для журналаСтатья

Выдержка

Electron microscopy has been applied to surface structure and emissivity for polycrystalline tungsten carbide and molybdenum and tungsten single crystals irradiated by γ-rays. The scanning electron microscope showed that γ-irradiation produced microrelief substantially affected by annealing; on the whole, the surface appeared as though it had melted, and craters were formed on the W. Melted parts also appeared on WC. The emission microscope was used to examine the structural changes on annealing, including the emissivity. With polycrystalline Mo, recrystallization occurred. At 1800-1820 K for W, 1680-1850 K for Mo, and 1350-1450 K for WC, the surfaces showed processes related to exothermic reactions between point defects produced by the γ-rays.

Язык оригиналаАнглийский
Страницы (с-по)95-96
Число страниц2
ЖурналMoscow University Physics Bulletin (English Translation of Vestnik Moskovskogo Universiteta, Fizika)
Том43
Номер выпуска5
СостояниеОпубликовано - 1988

Отпечаток

Electron microscopy
Molybdenum
molybdenum
Tungsten
electron microscopy
tungsten
Annealing
emissivity
Crystals
Exothermic reactions
Tungsten carbide
rays
Point defects
Surface structure
crystals
Microscopes
annealing
tungsten carbides
Electron microscopes
exothermic reactions

ASJC Scopus subject areas

  • Engineering(all)

Цитировать

Electron microscopy of γ-irradiated tungsten and molybdenum crystals. / Mashtakova, V. A.; Salomatin, A. A.; Shishkin, B. B.; Mamontov, A. P.; Nikitenko, N. N.; Chernov, I. P.

В: Moscow University Physics Bulletin (English Translation of Vestnik Moskovskogo Universiteta, Fizika), Том 43, № 5, 1988, стр. 95-96.

Результат исследований: Материалы для журналаСтатья

Mashtakova, V. A. ; Salomatin, A. A. ; Shishkin, B. B. ; Mamontov, A. P. ; Nikitenko, N. N. ; Chernov, I. P. / Electron microscopy of γ-irradiated tungsten and molybdenum crystals. В: Moscow University Physics Bulletin (English Translation of Vestnik Moskovskogo Universiteta, Fizika). 1988 ; Том 43, № 5. стр. 95-96.
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T1 - Electron microscopy of γ-irradiated tungsten and molybdenum crystals

AU - Mashtakova, V. A.

AU - Salomatin, A. A.

AU - Shishkin, B. B.

AU - Mamontov, A. P.

AU - Nikitenko, N. N.

AU - Chernov, I. P.

PY - 1988

Y1 - 1988

N2 - Electron microscopy has been applied to surface structure and emissivity for polycrystalline tungsten carbide and molybdenum and tungsten single crystals irradiated by γ-rays. The scanning electron microscope showed that γ-irradiation produced microrelief substantially affected by annealing; on the whole, the surface appeared as though it had melted, and craters were formed on the W. Melted parts also appeared on WC. The emission microscope was used to examine the structural changes on annealing, including the emissivity. With polycrystalline Mo, recrystallization occurred. At 1800-1820 K for W, 1680-1850 K for Mo, and 1350-1450 K for WC, the surfaces showed processes related to exothermic reactions between point defects produced by the γ-rays.

AB - Electron microscopy has been applied to surface structure and emissivity for polycrystalline tungsten carbide and molybdenum and tungsten single crystals irradiated by γ-rays. The scanning electron microscope showed that γ-irradiation produced microrelief substantially affected by annealing; on the whole, the surface appeared as though it had melted, and craters were formed on the W. Melted parts also appeared on WC. The emission microscope was used to examine the structural changes on annealing, including the emissivity. With polycrystalline Mo, recrystallization occurred. At 1800-1820 K for W, 1680-1850 K for Mo, and 1350-1450 K for WC, the surfaces showed processes related to exothermic reactions between point defects produced by the γ-rays.

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