Hydrolysis behavior of zirconium diboride during attrition milling
Hydrolysis behavior of zirconium diboride during attrition milling
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DOI：
10.1016/j.matchemphys.2011.11.004
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发表时间：
2012-03
影响因子：
4.6
通讯作者：
Jie Yin;Hui Zhang;Y. Yan;Zhengren Huang;Xue-jian Liu;Yong Yang;D. Jiang
中科院分区：
文献类型：
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作者：
Jie Yin;Hui Zhang;Y. Yan;Zhengren Huang;Xue-jian Liu;Yong Yang;D. Jiang
研究了ZrB2粉末在去离子水和乙醇中的研磨过程中的水解行为。采用表面表征、热分析、化学分析和电子显微镜等手段对球磨后粉末的表面性质进行了分析。结果表明，随着水解过程的进行，表面主要由Zr-O、B-O和B-OH键组成，在水中，表面B-O键的数量迅速增加，表明表面行为更接近于B_2O_3。结果还表明，在300rpm的水中球磨4h，64.45at%的B以B_2O_3的形式存在，厚度为∼3 nm。纳米级的表面氧化层(∼5 nm)有助于提高粉末在水介质中的分散性。
The hydrolysis behavior of ZrB2powder during attrition milling was studied in de-ionized water and ethanol. Surface characterization, thermal analysis, chemical analysis and electron microscopy were utilized to analyze the surface properties of as-milled powders. The results proved that the surface of ZrB2powder was mainly composed of Zr–O, B–O and B–OH bonds as hydrolysis proceeded, and the amount of surface B–O bond was found to increase rapidly in water, suggesting a more B2O3-like surface behavior were developed. Results also showed when milled at 300rpm for 4h in water, 64.45 at% of B was in the form of B2O3at a thickness of ∼3nm from the surface. The nano-sized surface Zr–B–O oxide layer (∼5nm in thickness) could help to improve the dispersion of powder in aqueous media.