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Synthesis of ultrafine beryllium powder of high purity by pyrolysis of di-t-butylberyllium etherate
Powder Technology ( IF 5.2 ) Pub Date : 2017-11-01 , DOI: 10.1016/j.powtec.2017.08.050
Jiqiang Zhang , Yudan He , Long Chen , Lei Jin , Kai Li , Bingchi Luo , Wenqi Li , Weidong Wu , Jiangshan Luo

Abstract Ultrafine beryllium (Be) powder of high purity was successfully synthesized by the pyrolysis of high-purity di-t-butylberyllium etherate (t-Bu2Be·Et2O) in elevated solvent. Scanning electron microscopy (SEM) shows that the powder is near-spherical. The most probable size of Be powder slightly decreases from 1.8 μm to 1.2 μm when the pyrolysis temperature increases from 202 °C to 214 °C and obviously decreases to 0.4 μm as further increases to 230 °C. X-ray diffraction (XRD) indicates that the powder has a single phase of α-Be with average crystallite size of 19.8 nm–21.5 nm. The total content of metal impurities in the powder is 6.8 ppm–94.0 ppm by inductively coupled plasma (ICP) determination.

中文翻译:

二叔丁基醚合铍热解合成高纯度铍超细粉

摘要 采用高纯二叔丁基醚合铍(t-Bu2Be·Et2O)在高溶剂中热解,成功合成了高纯度超细铍(Be)粉体。扫描电子显微镜 (SEM) 显示粉末接近球形。当热解温度从 202 °C 增加到 214 °C 时,Be 粉末的最可能尺寸从 1.8 μm 略微减小到 1.2 μm,并随着进一步升高到 230 °C 明显减小到 0.4 μm。X 射线衍射 (XRD) 表明粉末具有单相 α-Be,平均晶粒尺寸为 19.8 nm–21.5 nm。通过电感耦合等离子体 (ICP) 测定,粉末中金属杂质的总含量为 6.8 ppm–94.0 ppm。
更新日期:2017-11-01
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