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OALib Journal期刊
ISSN: 2333-9721
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模拟核素固化体SrZrxTi1?xO3的化学稳定性
DOI: 10.11889/j.0253-3219.2015.hjs.38.090301, PP. 90301-90301
Keywords: 钙钛矿,固化体,抗浸出性能,辐照
Abstract:
为研究90Sr衰变子体对90SrTiO3固化体结构稳定性的影响，以C4H6O4Sr?0.5H2O、TiO2及ZrOCl2?8H2O粉体作为原料，按照化学计量比SrZrxTi1?xO3(0≤x<1)设计配方，采用高温固相法制备一系列固化体。利用X射线衍射光谱(X-rayDiffraction,XRD)、扫描电镜(ScanningElectronMicroscope,SEM)及红外(FourierTransformInfrared,FT-IR)谱仪对制备固化体的物相、结构和微观形貌进行分析表征，并对其抗浸出性能和辐照性能进行了研究。结果表明，当x<0.5时，固化体为单一物相；当x≥0.5时，固化体中出现第二相。固化体中的Sr2+、Zr4+的浸出浓度随浸泡时间而增大，在浸泡42d时，Sr2+的最大浸出浓度为0.0065?g?mL?1，Zr4+的最大浸出浓度为0.01?g?mL?1。
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