Effect of Irradiation on Interfacial Bonding Properties of Cr-Zr Coating Cladding Materials
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摘要: 为研究辐照对Cr-Zr涂层界面结合性能的影响，本文开展了Cr-Zr涂层包壳材料在1 、5 、20 dpa下的常温Kr离子辐照试验，通过纳米压痕测试技术和透射电子显微镜表征技术对不同离子辐照剂量的Cr-Zr涂层材料进行显微硬度和微观组织研究。结果表明，随着辐照剂量的增大，基体、界面以及涂层的硬度均增大，材料发生了辐照硬化现象；辐照样品中涂层-基体界面处存在大量Kr离子辐照引入的Kr气泡，Kr泡浓度随着辐照剂量的增大而增大，最终使得Cr-Zr涂层界面结合强度随着辐照剂量的增大而下降。Abstract: To study the effect of irradiation on the interfacial bonding properties of Cr-Zr coating, the room temperature Kr ion irradiation tests of Cr-Zr coating materials at 1, 5 DPa and 20 DPa were carried out in this paper. The microhardness and microstructure of Cr-Zr coating materials with different ion irradiation doses were studied by nanoindentation and TEM characterization technology. The results show that with the increase of irradiation dose, the hardness of the matrix, Cr-Zr interface and coating all increases, indicating irradiation hardening occurs to the materials; There are a large number of Kr bubbles introduced by Kr ion irradiation at the coating-matrix interface in the irradiated samples. The concentration of Kr bubbles increases with the increase of the irradiation dose, and finally the interface bonding strength decreases with the increase of the irradiation dose.
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Key words:
- Cr-Zr coating /
- Ion irradiation /
- Interfacial bonding properties /
- Microstructure
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图 1 200×未辐照样品的光学显微镜截面形貌
Figure 1. Optical Microscope Cross-sectional Morphology of 200× Unirradiated Sample
图 2 Kr离子注入的SRIM模拟损伤20 dpa结果
Figure 2. SRIM Simulation Results of Kr Ion-Induced Damage at 20 dpa
图 6 Cr-Zr样品不同区域硬度随辐照剂量增大的变化
Figure 6. Variation of Hardness in Different Regions of Cr-Zr Sample with Increasing Irradiation Dose
图 7 涂层-基体弹塑性能匹配程度随辐照剂量增大的变化
Figure 7. Variation of Matching Degree of Coating-Matrix Elastoplastic Properties with Increasing Irradiation Dose
图 8 压入深度随辐照剂量增大的变化
Figure 8. Variation of Indentation Depth with Increasing Irradiation Dose
图 9 不同辐照剂量样品的形貌以及EDS能谱
Figure 9. Morphology and EDS Spectra of Samples Irradiated at Different Doses
图 10 未辐照样品的1200 nm深度范围TEM形貌图
Figure 10. TEM Morphology of Unirradiated Sample within 1200 nm Depth Range
图 11 未辐照样品中部气泡形貌
Figure 11. Morphology of Bubbles in the Middle of the Unirradiated Sample
图 12 不同辐照剂量1200 nm深度的界面Kr气泡形貌图
Figure 12. Interfacial Kr Bubble Morphology at 1200 nm Depth for Different Irradiation Doses
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