Boronation reaction between molybdenum or tungsten powder and boron carbide in aluminium melt

被引：3
|
作者：
Wang, Yu [1 ,2 ]
Wu, Yue-Dong [1 ,3 ,4 ,5 ]
Zhang, Guo-Hua [1 ,2 ]
机构：
[1] Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China
[2] Univ Sci & Technol Beijing, Beijing Key Lab Green Recovery & Extract Rare & P, Beijing 100083, Peoples R China
[3] State Key Lab Iron & Steel Ind Environm Protect, Beijing 100088, Peoples R China
[4] Energy Conservat & Environm Protect Co Ltd, MCC Grp, Beijing 100088, Peoples R China
[5] Cent Res Inst Bldg & Construct Co Ltd, MCC Grp, Beijing 100088, Peoples R China
来源：
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2022年 / 105卷
基金：
中国博士后科学基金;
关键词：
Borides; Boronation; Decarbonization; Al melt; MECHANICAL-PROPERTIES; BORIDE; COMPOSITE; WB; MICROSTRUCTURE; TETRABORIDE; PRESSURE; BEHAVIOR;
D O I：
10.1016/j.ijrmhm.2022.105813
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Molybdenum or tungsten borides are excellent high-temperature ceramics or electrocatalysis materials. In this paper, Mo or W borides were prepared by boronizing Mo or W powder in Al melt with B4C as boron source. By thermodynamic calculation, the feasibility of preparing various borides and the stability of borides in Al melt were evaluated. Through high temperature reaction at 1523 K and the following acidic leaching, single phase MoAlB, W2B5, WB, and W2B5 powders were successfully synthesized. Owing to the decarburizing function of Al melt, C contents of various boride products were below 1 wt%. In addition, the phase transition processes of various products in the synthesis stage were revealed.
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页数：7
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