Influence of Andalusite Addition and Particle Size on Properties of Bauxite-Silicon Carbide Brick

2014 ◽  
pp. 221-223
Author(s):  
Jinxing Ding ◽  
Guotian Ye ◽  
Yaozheng Li ◽  
Lin Yuan ◽  
Anping Fu
Keyword(s):  
Silicon Carbide ◽  
Particle Size

Microwave Synthesis of Silicon Carbide Nano Powders with Silicon and Carbon

2014 ◽  
Vol 602-603 ◽  
pp. 118-121
Author(s):  
You Jun Lu ◽  
Hong Fang Shen ◽  
Sheng Wei Guo
Keyword(s):  
Silicon Carbide ◽  
Particle Size ◽  
Microwave Heating ◽  
Chemical Reaction ◽  
Crystalline Phase ◽  
Microwave Synthesis ◽  
Time Effects ◽  
Xrd Patterns

Nanosized silicon carbide powders were synthesized from a mixture of silicon and carbon by microwave heating methods. The Result Indicates SiC can be formed at lower temperatures by using the Si-C reaction at 1200°C for 30min. XRD patterns shows that SiC peaks appeared as the only crystalline phase. SEM photo shows the particle size was 100～200 nanometer. At the same time, Effects of chemical reaction of silicon and carbon was researched by mechanical activated microwave synthesis.

Fabrication of silicon carbide nanoceramics

1996 ◽  
Vol 11 (7) ◽  
pp. 1601-1604 ◽  
Author(s):  
Mamoru Mitomo ◽  
Young-Wook Kim ◽  
Hideki Hirotsuru
Keyword(s):  
Silicon Carbide ◽  
Particle Size ◽  
Deformation Behavior ◽  
Superplastic Deformation ◽  
Average Particle Size ◽  
Liquid Phase Sintering ◽  
Carbide Powder ◽  
Average Particle ◽  
Average Grain Size ◽  
Silicon Carbide Powder

Ultrafine silicon carbide powder with an average particle size of 90 nm was densified by hot-processing with the addition of Al2O3, Y2O3, and CaO at 1750 °C. Silicon carbide nanoceramics with an average grain size of 110 nm were prepared by liquid phase sintering at low temperature. The materials showed superplastic deformation at a strain rate of 5.0 × 10-4/s at 1700 °C, which is the lowest temperature published. The microstructure and deformation behavior of materials from a submicrometer powder were also investigated as a reference.

Effect of particle size on oxidation of silicon carbide powders

2007 ◽  
Vol 33 (2) ◽  
pp. 309-313 ◽  
Author(s):  
Jia Quanli ◽  
Zhang Haijun ◽  
Li Suping ◽  
Jia Xiaolin
Keyword(s):  
Silicon Carbide ◽  
Particle Size ◽  
Effect Of Particle Size

The Influence of Different Particle Size of Carbon Powders on the Preparation of Porous Silicon Carbide Ceramic

2011 ◽  
Vol 284-286 ◽  
pp. 1370-1374
Author(s):  
Fei Han ◽  
Yu Hong Chen ◽  
Sheng Wei Guo ◽  
Jian Jun Ma
Keyword(s):  
Silicon Carbide ◽  
Particle Size ◽  
Porous Silicon ◽  
Fracture Morphology ◽  
Porous Ceramics ◽  
Main Ingredient ◽  
Porous Silicon Carbide ◽  
Silicon Carbide Ceramic ◽  
Powdered Carbon ◽  
Mechanics Performance

On the preparation of porous ceramics with composite sintering auxiliaries Y2O3-Al2O3 , the main ingredient of SIC , and CMC as the porous agent . Having studied the C content of composite structure and mechanical properties , And analysised the composite fracture morphology with SEM . The results show that, when using different particle size of carbon powders mixed the porous silicon carbide ceramic sample size powdered carbon than a single sample of micro skeleton intact, the shapes of holes, and more rules are uniformly distributed, comprehensive mechanics performance is better.

The effect of the modification by ultrafine silicon carbide powder on the structure and properties of the Al-Si alloy

2020 ◽  
Vol 2 (101) ◽  
pp. 57-62
Author(s):  
T.M. Kovbasiuk ◽  
V.Yu. Selivorstov ◽  
Yu.V. Dotsenko ◽  
Z.A. Duriagina ◽  
V.V. Kulyk ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Particle Size ◽  
Volume Fraction ◽  
Cast Alloy ◽  
Metallographic Analysis ◽  
Carbide Powder ◽  
Surface Layers ◽  
First Time ◽  
Alloys Of The Al ◽  
Practical Implications

Purpose: Determine the possibility of modifying aluminium alloys of the Al-Si system with an ultrafine SiC modifier with a particle size of 3-5 μm. Design/methodology/approach: Processing of the Al-Si alloy was carried out by introducing an ultrafine modifier in the amount of 0.1, 0.2, or 0.3 wt.%. Silicon carbide (SiC) with a particle size in the range of 3-5 μm was used as a modifier. To study the microstructure of the formed surface layers, a metallographic analysis was performed according to the standard method on a microscope MIKPOTEX® MMT-14C using TopView software. Microhardness studies of the samples were carried out on a Vickers microhardness tester NOVOTEST TC-MKV1. The microstructure of castings of the AlSi12 grade was studied at magnification from 100 to 400 times on the horizontal and vertical surfaces of the samples after etching with a 2% NaOH aqueous solution. Findings: Aluminium cast alloy of Al-Si system has been synthesized with the addition of 0.1, 0.2, and 0.3 wt.% ultrafine SiC modifier. It was found that the modification of the AlSi12 alloy by SiC particles of 3-5 μm in size led to an improvement of its microstructure due to the reduction of the volume fraction of micropores and primary Si crystals. It was shown that the AlSi12 aluminium alloy due to the modification by 0.2 wt.% SiC has the best micromechanical properties and macrostructure density. Research limitations/implications: The obtained research results are relevant for cast specimens of the indicated sizes and shapes. The studies did not take into account the influence of the scale factor of the castings. Practical implications: The developed modification technology was recommended for use in the conditions of the foundry "Dnipropetrovsk Aggregate Plant" (Dnipro, Ukraine). Originality/value: The technology of AlSi12 alloy modification of ultrafine SIC modifier with a particle size of 3-5 μm was used for the first time.

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