分类： 物理学 >> 核物理学 提交时间： 2025-02-13
摘要： The thin window of a gas detector is crucial for allowing X-rays or other radiation to penetrate the detector. Today, the thin window at the entrance of the gas detector relies mainly on imports. The penetration performance of polyester films as incident windows for thin-window gas detectors was improved through the combination of plasma treatment and an organic-inorganic hybrid coating. Plasma modification provides an efficient way to achieve surface etching and polar group formation, therefore, the organic-inorganic hybrid coating fastness on the film could be efficiently increased. Scanning electron microscopy (SEM), Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray spectroscopy (EDS), and contact angle measurements were employed to analyze the surface morphology, chemical composition, and hydrophilicity of the modified films. Experimental results revealed that increased plasma treatment power and duration improved surface roughness and hydrophilicity, and significantly improved coating adhesion and uniformity. X-ray fluorescence spectroscopy confirmed a marked reduction in particle loss, demonstrating the coating films’ improved suitability for high-sensitivity particle detection applications. This approach shows potential for further optimization, offering a viable pathway to advance thin-window gas detector technologies.
分类： 材料科学 >> 材料科学（综合） 提交时间： 2023-03-31 合作期刊: 《腐蚀科学与防护技术》
摘要： 结合腐蚀增重和腐蚀失重变化并利用SEM、XRD和XPS等手段，研究了国产核级E308L不锈钢焊条熔敷金属在模拟核电一回路水环境中的均匀腐蚀性能。结果显示，随着腐蚀周期的增加，腐蚀增重和腐蚀失重均为先迅速增加，随后增加趋缓，而试样表面氧化物颗粒数量和尺寸逐渐增大，氧化膜的主要成分为Fe和Cr的氧化物。3000h内国产核级E308L不锈钢焊条具有良好的抗均匀腐蚀性能。
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