In situ fabrication of ZrB2-SiC composite powders with controllable morphology by a two-step calcination method
In situ fabrication of ZrB2-SiC composite powders with controllable morphology by a two-step calcination method
复制标题
两步煅烧法原位制备形貌可控的ZrB2-SiC复合粉末
DOI:
10.1016/j.jssc.2019.02.042
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发表时间:
2019-05
影响因子:
3.3
通讯作者:
Qiang Zhen
中科院分区:
文献类型:
--
作者:
Shaolei Song;Yuehua Lin;Yongli Fan;Rong Li;Pengfei Hu;Qiang Zhen
In order to obtain controllable morphology ZrB2-SiC composite powders, a two-step calcination method (TSC) was designed to separate the formation process of ZrB2(1300 °C) and SiC (1400 °C), which is beneficial to the growth and self-assembly of ZrB2rods. Besides the Si content also affected the morphology of final product. The results show that in ZrB2-SiC with lower Si content, ZrB2rods with a diameter of 1–2 μm and aspect ratios of ∼8 are randomly distributed, but with increasing Si addition, ZrB2rods started to be oriented arrange and assembled to clusters. The ZrB2-SiC with 30 vol% SiC obtained by TSC had the ZrB2with clusters, and spherical SiC particles well dispersed among rods.
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