scholarly journals Reaction Processes and Characterization of ZrB2Powder Prepared by Boro/Carbothermal Reduction of ZrO2in Vacuum

2009 ◽  
Vol 92 (1) ◽  
pp. 264-267 ◽  
Author(s):  
Wei-Ming Guo ◽  
Guo-Jun Zhang
Keyword(s):  
Carbothermal Reduction ◽  
Reaction Processes

Fabrication and Characterization of Aluminum Nitride/Boron Nitride Nanocomposites by Carbothermal Reduction and Nitridation of Aluminum Borate Powders

2008 ◽  
Vol 8 (11) ◽  
pp. 5846-5853 ◽  
Author(s):  
Takafumi Kusunose ◽  
Nobuaki Sakayanagi ◽  
Tohru Sekino ◽  
Yoichi Ando
Keyword(s):  
Boron Nitride ◽  
Aluminum Nitride ◽  
Carbothermal Reduction ◽  
High Hardness ◽  
Carbon Powder ◽  
Pressureless Sintering ◽  
Aluminum Borate ◽  
Nitrogen Gas ◽  
Nanocomposite Powders

In order to fabricate aluminum nitride/boron nitride (AlN/BN) nanocomposites by pressureless sintering, the present study investigated the synthesis of AlN-BN nanocomposite powders by carbothermal reduction and nitridation of aluminum borate powders. Homogeneous mixtures of alumina (Al2O3), boric acid (H3BO3), and carbon powder were used to synthesize AlN/BN nanocomposite powders containing 10 and 20 vol% BN. Aluminum borate was produced by reacting Al2O3 and B2O3 above 800 °C, and AlN and turbostratic BN (t-BN) were produced by reacting aluminum borate with carbon powder and nitrogen gas at 1500 °C. Carbothermal reduction followed by nitridation yielded an AlN/BN nanocomposite powder composed of nanosized AlN and t-BN. By pressureless sintering nanocomposite AlN/BN powders containing 5 wt% Y2O3, AlN/BN nanocomposites were obtained without compromising the high thermal conductivity and high hardness.

Characterization of β-Silicon Carbide Powders Synthesized by the Carbothermal Reduction of Silicon Carbide Precursors

1998 ◽  
Vol 81 (12) ◽  
pp. 3173-3176 ◽  
Author(s):  
Daxiang Huang ◽  
Yuichi Ikuhara ◽  
Masaki Narisawa ◽  
Kiyohito Okamura
Keyword(s):  
Silicon Carbide ◽  
Carbothermal Reduction

Preparation and characterization of SiC nanowires and nanoparticles from filter paper by sol–gel and carbothermal reduction processing

2007 ◽  
Vol 42 (15) ◽  
pp. 6439-6445 ◽  
Author(s):  
Wei Wang ◽  
ZhiHao Jin ◽  
Tao Xue ◽  
GangBin Yang ◽  
GuanJun Qiao
Keyword(s):  
Filter Paper ◽  
Carbothermal Reduction ◽  
Sol Gel ◽  
Sic Nanowires
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