Surface structure investigation of C/C composites by Ar ion irradiation

YANG Jingyi; YAN Long; HUAI Ping

doi:10.11889/j.0253-3219.2014.hjs.37.050202

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Surface structure investigation of C/C composites by Ar ion irradiation

更新时间：2021-03-03

- Surface structure investigation of C/C composites by Ar ion irradiation
- NUCLEAR TECHNIQUES Vol. 37, Issue 5, Article number: 050202(2014)
- 作者机构：
  
  1. 中国科学院上海应用物理研究所嘉定园区,上海,201800
  2. 中国科学院核辐射与核能技术重点实验室,上海,201800
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2014.hjs.37.050202
  CLC：
- Published：08 May 2014
- 稿件说明：
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YANG Jingyi, YAN Long, HUAI Ping. Surface structure investigation of C/C composites by Ar ion irradiation[J]. Nuclear techniques, 2014, 37(5): 050202
DOI：

YANG Jingyi, YAN Long, HUAI Ping. Surface structure investigation of C/C composites by Ar ion irradiation[J]. Nuclear techniques, 2014, 37(5): 050202 DOI： 10.11889/j.0253-3219.2014.hjs.37.050202.

摘要

C/C复合材料与熔盐的相容性好，而且具备优异的高温性能，在熔盐堆中将具有良好的应用前景。目前，国内外对于C/C复合材料在辐照下的表面结构研究尚少。文中采用0.5 MeV和1 MeV的Ar离子，利用扫描电子显微镜和拉曼光谱仪研究了辐照的C/C复合材料表面的形貌特征和显微结构变化。结果表明，随着辐照剂量的增大，C/C复合材料基体表面的损伤增加，并在其基体表面产生一定数量的裂纹和孔洞，裂纹和孔洞的尺寸最大可接近微米量级。能量为0.5 MeV、剂量为2.4×1016 ions?cm?2的Ar离子比能量为1 MeV、剂量为3×1016ions?cm?2的Ar离子对C/C复合材料基体表面的辐照损伤明显增加。

Abstract

Background: C/C composites are an attractive choice for components in nuclear reactors because of their excellent performance in high temperature resistance

corrosion resistance and radiation resistance. However

to the best of our knowledge

the radiation research on their morphology and microstructure are scant. Purpose: The aim is to investigate the morphology and microstructure of C/C composites induced by irradiation. Methods: The C/C composites were irradiated with 0.5MeV and 1 MeV Ar ions at room temperature. The samples prepared before and after irradiation have been characterized by Raman spectroscopy and scanning electron microscope (SEM). Results: With the increment of irradiation dose

the surface defects in the irradiated samples greatly increase. Moreover

some cracks and holes are found in the matrix surfaces

and the largest ones are even up to the size of one micrometer. Conclusion: The surface defects in the matrix caused by 0.5 MeV Ar ion with dose of 2.4×1016 ions?cm?2 are much more than those by 1 MeV Ar ion with dose of 3×1016 ions?cm?2.Cited

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