Rapid synthesis of MoAlB ceramic via thermal explosion

Rapid synthesis of MoAlB ceramic via thermal explosion
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热爆炸快速合成MoAlB陶瓷

DOI:
10.1016/j.jmrt.2021.08.121
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发表时间:
2021-09
期刊:
Journal of Materials Research and Technology
影响因子:
--
通讯作者:
Xiaoyan Guan
Xiaoyan Guan
中科院分区:
其他
文献类型:
--
作者:
Baoyan Liang;Zhen Dai;Wangxi Zhang;Qisong Li;Dongming Niu;Mingli Jiao;Li Yang;Xiaoyan Guan

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以Mo/Al/B混合粉末为原料,采用热爆法制备了高MoAlB含量的陶瓷。利用DSC、X-射线多晶衍射仪和扫描电子显微镜研究了原料配比和加热方式对产物物相组成的影响。结果表明,以1.1Mo/1.2Al/1.05B为原料,在800℃下保温1h,可制得MoAlB含量较高的陶瓷。1.1Mo/1.1Al/1B粉末也可在1000℃放电等离子烧结而无需保温。最后,在热力学分析的基础上,提出了热爆合成MoAlB材料的反应机理。
Ceramics with high MoAlB content were rapidly synthesized via thermal explosion by using Mo/Al/B mixed powders as the raw materials. The effects of raw material ratio and heating mode on the phase composition of the products were studied through DSC, X-ray polycrystalline diffractometer, and SEM. Results showed that ceramics with high MoAlB contents could be prepared from 1.1Mo/1.2Al/1.05B powders by using a tubular furnace at 800 °C for 1 min. They could also be obtained from 1.1Mo/1.1Al/1B powders through spark plasma sintering at 1000 °C without holding. Finally, the reaction mechanism of MoAlB material synthesis via thermal explosion was proposed on the basis of thermodynamics analysis.
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