Influence of B4C Particle Size on the Synthesis of ZrB2 by Boro/Carbothermal Reduction Method

2017 ◽  
Vol 71 (1) ◽  
pp. 57-65 ◽  
Author(s):  
S. S. N. Murthy ◽  
Manish Patel ◽  
J. J. Reddy ◽  
V. V. Bhanu Prasad
2018 ◽  
pp. 101-107
Author(s):  
Bingying Xie ◽  
Jincheng Yu ◽  
Yujun Zhang ◽  
Hongyu Gong ◽  
Xiao Lin ◽  
...  

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 1811 ◽  
Author(s):  
Yuan Zeng ◽  
Feng Liang ◽  
Jianghao Liu ◽  
Jun Zhang ◽  
Haijun Zhang ◽  
...  

To address the various shortcomings of a high material cost, energy-intensive temperature conditions and ultra-low efficiency of the conventional boro/carbothermal reduction method for the industrial preparation of ZrB2-SiC powders, a novel molten-salt and microwave-modified boro/carbothermal reduction method (MSM-BCTR) was developed to synthesize ZrB2-SiC powders. As a result, phase pure ZrB2-SiC powders can be obtained by firing low-cost zircon (ZrSiO4), amorphous carbon (C), and boron carbide (B4C) at a reduced temperature of 1200 °C for only 20 min. Such processing conditions are remarkably milder than not only that required for conventional boro/carbothermal reduction method to prepare phase pure ZrB2 or ZrB2-SiC powders (firing temperature of above 1500 °C and dwelling time of at least several hours), but also that even with costly active metals (e.g., Mg and Al). More importantly, the as-obtained ZrB2 particles had a single crystalline nature and well-defined plate-like morphology, which is believed to be favorable for enhancing the mechanical properties, especially toughness of their bulk counterpart. The achievement of a highly-efficient preparation of such high-quality ZrB2-SiC powders at a reduced temperature should be mainly attributed to the specific molten-salt and microwave-modified boro/carbothermal reduction method.


2007 ◽  
Vol 12 (7-8) ◽  
pp. 1011-1015 ◽  
Author(s):  
H. Liu ◽  
P. Zhang ◽  
G. C. Li ◽  
Q. Wu ◽  
Y. P. Wu

2012 ◽  
Vol 22 (3) ◽  
pp. 621-626 ◽  
Author(s):  
Yan-hong YIN ◽  
Shao-yu LI ◽  
Lin-lin YAN ◽  
Hui-shuang ZHANG ◽  
Shu-ting YANG

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