Study of the temperature dependence of a carbidized layer formation on the tungsten surface under plasma irradiation
Study of the temperature dependence of a carbidized layer formation on the tungsten surface under plasma irradiation
复制标题
DOI：
10.1088/2053-1591/ac4626
复制
发表时间：
2022-01-01
影响因子：
2.3
通讯作者：
Orazgaliev, Nurkhat
中科院分区：
文献类型：
--
作者：
Baklanov, Victor;Zhanbolatova, Gainiya;Orazgaliev, Nurkhat
本文研究了一种在等离子束装置（PBI）上实现的束-等离子体放电（BPD）钨表面渗碳的方法。这种方法的优点是为化学反应和物理过程创造尽可能接近热核装置中可能的条件。BPD使得使用不同的工作气体产生等离子体成为可能。甲烷被用作等离子体形成气体。腔室中的工作气体压力为（1.3 - 1.4）中心点10（-1）Pa。在700 ℃ ~ 1700 ℃的温度范围内，测定了等离子体照射下钨表面碳化层形成的温度依赖性。通过扫描电镜和X射线衍射分析证实了表面层中碳化钨的形成。结果表明，在较宽的温度范围内，甲烷与钨的相互作用可以同时或相继形成W2 C和WC相。
The paper considers a method of tungsten surface carbidization using a beam-plasma discharge (BPD), which was implemented in a plasma-beam installation (PBI). The advantage of this method is to create conditions for chemical reactions and physical processes as close as possible to those possible in thermonuclear installations. The BPD makes it possible to generate plasma using different working gases. Methane was used as a plasma-forming gas. The working gas pressure in a chamber was (1,3-1,4)center dot 10(-1) Pa. The temperature dependence of the carbidized layer formation on the tungsten surface under plasma irradiation was determined in the temperature range of 700 degrees C-1700 degrees C. The formation of tungsten carbides in surface layers was confirmed by SEM and x-ray diffraction analysis. It was found that interaction between tungsten and methane in a wide temperature range can proceed with simultaneous or sequential formation of the carbide phases W2C and WC.