Oxidation of zirconium alloyed with chromium atoms by means of compression plasma flows impact

Physics and Chemistry of Materials Treatment Pub Date : 1900-01-01 DOI:10.30791/0015-3214-2023-3-18-32

V. Shymanski, V. V. Sheveleva, V. Uglov, V. Astashynski, A. Kuzmitski

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Abstract

The results of investigation of the zirconium structure on the first stage of oxidation at temperature 700 °C in the air atmosphere after 15 minutes are presented. The commercial pure zirconium alloy as well as zirconium alloyed with chromium atoms by means of compression plasma flows impact are investigated. The results showed the possibility to form the top layer in zirconium alloyed with chromium when a thin chromium coating (1 mm) was deposited on the surface and the compression plasma flow with the absorbed energy density 25 – 43 J/cm2 influenced. Due to alloying with chromium, the high-temperature β-phase of zirconium is stabilized at room temperature as β-Zr(Cr) solid solution and martensite α′-Zr phase is formed. The oxidation at temperature 700 °C demonstrated the higher oxidation resistance of the zirconium samples treated with compression plasma flows at the highest absorbed energy density 43 J/cm2. This regime modified the top layer of the zirconium sample without β-Zr(Cr) solid solution formation which enhances the oxygen diffusion.

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用压缩等离子体流冲击氧化铬原子锆合金

本文介绍了在700℃空气气氛中氧化15分钟后第一阶段锆结构的研究结果。用压缩等离子体流冲击的方法对工业纯锆合金和铬原子锆合金进行了研究。结果表明，在铬锆合金表面沉积1 mm的薄铬层，影响吸收能量密度为25 ~ 43 J/cm2的压缩等离子体流，有可能形成顶层。由于与铬的合金化作用，锆的高温β相在室温下稳定为β-Zr(Cr)固溶体，形成马氏体α′-Zr相。在700℃的氧化条件下，压缩等离子体流处理的锆样品具有较高的抗氧化性，吸收能量密度最高为43 J/cm2。这一机制修饰了锆样品的顶层，没有形成β-Zr(Cr)固溶体，增强了氧的扩散。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Physics and Chemistry of Materials Treatment

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