Fabrication of titanium diboride–carbon core–shell structure particles and their application as high-efficiency grain refiners of wrought aluminum alloys
Fabrication of titanium diboride–carbon core–shell structure particles and their application as high-efficiency grain refiners of wrought aluminum alloys
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DOI：
10.1016/j.scriptamat.2013.01.026
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发表时间：
2013-05
影响因子：
6
通讯作者：
J. Nie;H. Ding;Yuying Wu;Xiangfa Liu
中科院分区：
文献类型：
--
作者：
J. Nie;H. Ding;Yuying Wu;Xiangfa Liu
利用铝液中TiC向TiB2的转化，提出了一种简便的合成TiB2@C核壳结构颗粒的方法。颗粒呈六方片状，长约800 nm，厚度约200 nm。4 nm厚的碳层均匀地覆盖在TiB_2上。对工业纯铝合金的细化试验表明，TiB_2@C颗粒具有比TiB_2更高的细化效率。
A facile method for the synthesis of titanium diboride core–shell structure particles (TiB2@C) was developed utilizing the transformation from TiC to TiB2in aluminum melt. The particles display hexagonal platelet morphology, with a length of about 800nm and a thickness of about 200nm. Carbon layers 4nm thick are homogeneously coated on the TiB2. Grain refining tests on commercial pure aluminum alloy indicate that TiB2@C particles display a higher grain refining efficiency than TiB2.