Preparation and properties of Al2O3/Ni composite from NiAl2O4 spinel by in situ reaction sintering method

2007 ◽  
Vol 33 (7) ◽  
pp. 1211-1215 ◽  
Author(s):  
Toshihiro Isobe ◽  
Keiji Daimon ◽  
Kazunori Ito ◽  
Takashi Matsubara ◽  
Yasuo Hikichi ◽  
...  
Keyword(s):  
Reaction Sintering ◽  
In Situ Reaction ◽  
Sintering Method

Mechanism of Silicon/Carbon Reaction for β-SiC Bonded SiC Materials

2011 ◽  
Vol 335-336 ◽  
pp. 12-17 ◽  
Author(s):  
Chun Jiang Lv ◽  
Yang Yang ◽  
Zhen Liu ◽  
Long Fei Li ◽  
Cheng Chang ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Carbon Black ◽  
Gas Phase ◽  
Reaction Sintering ◽  
In Situ Reaction ◽  
Sic Nanowires ◽  
Silicon Carbon ◽  
Mechanism Of Reaction

Based on industrial silicon and carbon black as starting materials,β-SiC bonded SiC materials were prepared. The microstructure of such material and the silicon/carbon reaction were analyzed and investigated by XRD, SEM and other tools. The results indicate that the synthesis of β-SiC at 1400°C can be achieved through gas-phase mass transfer, liquid dissolution as well as in-situ reaction. While gas-phase mass transfer is the dominant reaction during the sintering of the material, in which β-SiC exists mainly as nanowhisker. The formation of β-SiC nanowires is believed to be the mechanism of reaction sintering.

scholarly journals "Zirconium Carbide?Tungsten Cermets Prepared by In Situ Reaction Sintering"

2007 ◽  
Vol 90 (7) ◽  
pp. 2296-2296 ◽  
Author(s):  
S. C. Zhang ◽  
G. E. Hilmas ◽  
W. G. Fahrenholtz
Keyword(s):  
Zirconium Carbide ◽  
Reaction Sintering ◽  
In Situ Reaction

In Situ Fabrication of Particles Reinforced Al-Si-Al2O3 Composites by Hot Isostatic Pressing

2011 ◽  
Vol 284-286 ◽  
pp. 38-42 ◽  
Author(s):  
Ying Gao ◽  
Dei Gui Zhu ◽  
Ling Cheng ◽  
Hong Liang Sun ◽  
Qing Wang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Hot Isostatic Pressing ◽  
Reaction Sintering ◽  
Test Results ◽  
Isostatic Pressing ◽  
In Situ Reaction ◽  
Heating Up ◽  
Sintering Processes

Particles reinforced Al-xwt.%Si-Al2O3(x=10,20) composites are fabricated through in situ reaction sintering of Al and SiO2powder by hot isostatic pressing. Outgassing process and the microstructure of composites under different sintering processes are studied.XRD analysis confirms that the best hot outgassing temperature is 500°C,in situ reaction achieves completely and samples A2 and B2 have better microstructure at 550°C then heating-up to 700°C only for 1h.The microstructure analysis indicates that the reinforcement particulates distribute uniformly in the aluminum matrix.The mechanical properties test results show that the tensile strength of A2 is higher than B2. whenx=10,the Al-Si-Al2O3composites have better performance.

Mo-Si-C-N Multi-Layer Anti-Oxidation Coating on C/C Composites

2007 ◽  
Vol 353-358 ◽  
pp. 1899-1902
Author(s):  
Zhong Hong Lai ◽  
Jae Ho Jeon ◽  
Jing Chuan Zhu ◽  
Zhong Da Yin
Keyword(s):  
Photoelectron Spectroscopy ◽  
Middle Layer ◽  
Nitrogen Atmosphere ◽  
Reaction Sintering ◽  
X Ray ◽  
Dipping Process ◽  
Main Portion ◽  
Sintering Method ◽  
Layer Coating

A Mo-Si-C-N multi-layer anti-oxidation coating was in situ fabricated on C/C composites by fused slurry and reaction-sintering method in nitrogen atmosphere using Mo and Si element powders, and characterized by X-ray diffractometry, optical microscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy with energy dispersive spectroscopy. It is shown that the coating contains three distinctive layers, namely, SiC inner-layer, MoSi2/Si middle-layer and Si3N4/SiC/Si thin surface-layer. The MoSi2/Si middle-layer, whose thickness could be controlled by dipping process, is the main portion of coating. Oxidation test reveals that the Mo-Si-C-N multi-layer coating significantly improves the oxidation resistance of the C/C composites. Compared with the Mo-Si-C coating, the oxidation temperature is extended up to 1450°C. After oxidation pre-treating at 1400°C, the anti-oxidizing temperature of the Mo-Si-C-N multi-layer coated C/C composites can be raised to 1500°C and the weight loss is less than 1wt% after 12-hour oxidizing test.

Direct preparation of macroporous mullite supports for membranes by in situ reaction sintering

2008 ◽  
Vol 318 (1-2) ◽  
pp. 38-44 ◽  
Author(s):  
Gangling Chen ◽  
Hong Qi ◽  
Weihong Xing ◽  
Nanping Xu
Keyword(s):  
Reaction Sintering ◽  
In Situ Reaction ◽  
Direct Preparation
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