High-intensity chromium ion implantation into Zr-1Nb alloy / A. I. Ryabchikov [et al.]
Уровень набора: Surface and Coatings TechnologyЯзык: английский.Резюме или реферат: High-intensity low energy chromium ions implantation was used for surface modification of zirconium Zr-1Nb alloy. The Cr ions were extracted from cathodic arc plasma and focused ballistically using a negatively biased hemispherical grid electrode immersed in plasma. The microstructure, phase composition and elemental distribution of Cr-implanted alloy were studied by scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDX), respectively. The results revealed the formation of ZrCr2 Laves phase of C15 polytype after Cr ions implantation. The content of Laves phase increases with implantation temperature up to 22 vol% (at 900 °C). The Laves phase precipitations are nucleated and grew alternately inside the a-Zr solid solution matrix. The high-temperature (HT) oxidation resistance of Cr-implanted samples was analyzed during HT oxidation test in steam at 1000 and 1200 °C for 10 min..Примечания о наличии в документе библиографии/указателя: [References: 39 tit.].Аудитория: .Тематика: электронный ресурс | труды учёных ТПУ | high-intensity ion implantation | chromium | zirconium alloy | Laves phase | high-temperature oxidation | microstructure | ионная имплантация | хром | сплавы циркония | высокотемпературное окисление | микроструктура Ресурсы он-лайн:Щелкните здесь для доступа в онлайнTitle screen
[References: 39 tit.]
High-intensity low energy chromium ions implantation was used for surface modification of zirconium Zr-1Nb alloy. The Cr ions were extracted from cathodic arc plasma and focused ballistically using a negatively biased hemispherical grid electrode immersed in plasma. The microstructure, phase composition and elemental distribution of Cr-implanted alloy were studied by scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDX), respectively. The results revealed the formation of ZrCr2 Laves phase of C15 polytype after Cr ions implantation. The content of Laves phase increases with implantation temperature up to 22 vol% (at 900 °C). The Laves phase precipitations are nucleated and grew alternately inside the a-Zr solid solution matrix. The high-temperature (HT) oxidation resistance of Cr-implanted samples was analyzed during HT oxidation test in steam at 1000 and 1200 °C for 10 min.
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