scholarly journals Structural Evolution of Silicon Carbide Nanopowders during the Sintering Process

2014 ◽  
Vol 2014 ◽  
pp. 1-5
Author(s):  
Galina Volkova ◽  
Oleksandr Doroshkevych ◽  
Artem Shylo ◽  
Tetyana Zelenyak ◽  
Valeriy Burkhovetskiy ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Silicon Carbide ◽  
Physical Properties ◽  
Anomalous Diffusion ◽  
Sintering Temperature ◽  
Structural Evolution ◽  
Temperature Evolution ◽  
Sintering Process ◽  
Temperature Characteristics ◽  
The Relationship

Processes of sintering of silicon carbide nanopowder were investigated. Values of density (ρ=3.17 g/cm3) and strength (σ=450 MPa) were obtained. Within the theory of dispersed systems, the temperature evolution of the materials structure was considered. The relationship between sintering temperature, characteristics of crystal structure and physical properties, in particular, density, and strength of aforementioned ceramics was established. It was concluded that it is necessary to suppress the anomalous diffusion at temperatures above 2080°C.

Effects of Sintering Process on the Properties of Ti3SiC2/Cu Composite

2012 ◽  
Vol 512-515 ◽  
pp. 377-381 ◽  
Author(s):  
Jin Rong Lu ◽  
Yang Zhou ◽  
Yong Zheng ◽  
Shi Bo Li ◽  
Zhen Ying Huang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Vickers Hardness ◽  
Hot Pressing ◽  
Sintering Temperature ◽  
Sintering Process ◽  
Vacuum Sintering ◽  
New Type ◽  
Sintering Conditions ◽  
The Relationship ◽  
Better Than

In this paper, a new type of Ti3SiC2/Cu composites with the volume fractions of 30% Ti3SiC2 particle was prepared by hot pressing and vacuum sintering respectively. The effects of sintering temperature and holding time on the density, resistance and Vickers hardness of Cu-30vol%Ti3SiC2 composite were investigated. The results show that the mechanical properties of the composites prepared by hot pressing are better than that prepared by vacuum sintering. The relative densities of Cu-30vol% Ti3SiC2 composites are rather high in suitable sintering conditions. It achieved 100% for the composites prepared by hot pressing at 930°C for 2h, and 98.4% for the composites prepared by vacuum sintering at 1250°C for 1h. At the same time, the maximum Vickers hardness reached 1735MPa at 900°C by hot pressing. The resistance and Vickers hardness of the composites decreased with an increase in sintering temperature, whereas the density increased. Scanning electron microscope (SEM) and energy-dispersive spectroscopy (EDS) were used to observe the microstructure of the composites. The relationship between microstructure and mechanical properties was discussed.

X-Ray Characterization and Crystal Structure of SBT Doped with V2O5

2011 ◽  
Vol 287-290 ◽  
pp. 608-612
Author(s):  
Su Hua Lv ◽  
Shu Lang Guo ◽  
Hua Ji
Keyword(s):  
Crystal Structure ◽  
Temperature Change ◽  
Sintering Temperature ◽  
Ferroelectric Materials ◽  
Reaction Sintering ◽  
Sintering Process ◽  
Solid Reaction ◽  
X Ray ◽  
Plate Shape

SBT Ferroelectric Materials are prepared by solid reaction sintering process after doping V2O5to SBT bulk and its properties are researched. The results show that this method can decrease sintering temperature , change the grains from rod to plate shape, increase grains size and lead to the grains growth with c-axis. And there are ferroelectric 90b domains in SBTV crystal .

Effect of Sintering Temperature on the Properties of Sludge Ceramics and Fly-Ash Ceramics

2010 ◽  
Vol 150-151 ◽  
pp. 1068-1072
Author(s):  
Min Yue ◽  
Qin Yan Yue ◽  
Yuan Feng Qi
Keyword(s):  
Fly Ash ◽  
Sewage Sludge ◽  
Physical Properties ◽  
Sintering Temperature ◽  
Raw Materials ◽  
Control Factor ◽  
Sintering Process ◽  
Technical Parameters ◽  
Sintering Mechanism ◽  
Starting Point

The object of this study is to investigate the sintering mechanism of lightweight ceramic by different sintering temperature. The raw materials were sewage sludge and fly-ash, and clay was added as cementing agents (by ratio of 50wt% in each sample). The raw materials were mixed and pressed into raw pellets. After drying and preheating treatment, the raw pellets were sintered at temperatures ranging from 1050 to 1150 , in 25 increments for 10min. The physical properties (bulk density, grain density, water absorption and rate of expansion) were the indexes used to determine the technical parameters for the preparation of lightweight ceramic pellets and investigate the sintering mechanism of bloating. The results suggested that temperature was the key control factor of sintering process, and 1150 was the starting point of bloating reaction. Observation of the microstructure by SEM indicated that a higher flux content in the raw materials could lower the melt point during sintering process.

Influence of Adding β-SiС on the Performance of α-SiС Pressureless Sintering Ceramics

2012 ◽  
Vol 512-515 ◽  
pp. 765-769 ◽  
Author(s):  
Li Rong Deng ◽  
Shu He Lu ◽  
Xue Ying Wang ◽  
Jia Bo Wang ◽  
Ying Bo Liu ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Vickers Hardness ◽  
Phenolic Resin ◽  
Sintering Temperature ◽  
Pressureless Sintering ◽  
Sintering Process ◽  
Sintering Additives ◽  
Cubic Silicon Carbide ◽  
Addition Amount

βThe B4C and phenolic resin were used as sintering additives to study the different β-SiC（cubic silicon carbide) addition to the performance of α-SiC pressureless sintering ceramics in this paper, and the optimum sintering temperature and the best β-SiC addition amount were determined. By XRD, SEM,density testing and other tests showed that, all the β-SiC transform 6Hα-SiC during the sintering process ,the ceramics have a Vickers hardness of 18.04 GPa,a frature toughness of 4.51MPa ,a density of 3.13g/cm3 by adding 15wt% β-SiC powders.

Physical Properties and Microstructures of Ceramics Fabricated from Mae Moh Lignite Bottom Ash

2019 ◽  
Vol 801 ◽  
pp. 292-297
Author(s):  
Pat Sooksaen
Keyword(s):  
Physical Properties ◽  
Water Absorption ◽  
Sintering Temperature ◽  
Bottom Ash ◽  
Waste Glass ◽  
Particle Sizes ◽  
Densification Behavior ◽  
Sintering Process ◽  
Main Component ◽  
Mae Moh

Mae Moh lignite bottom ash was utilized as the main component in the fabrication of lightweight ceramic formulations. The amount of 50-80 wt.% bottom ash was successfully utilized to produce ceramics at sintering temperatures between 900 and 1200°C. Waste glass was used as a flux for the sintering process. Bottom ash was carefully sieved into three different particle sizes; small, medium and large. The different particle sizes were used in the ceramic fabrication to investigate for the densification behavior. Overall, porosity and water absorption of the fabricated ceramics decreased with increasing sintering temperature. Sintering at 1125°C resulted in the most densified ceramics which retained good physical appearance without sample distortion or melting.

Properties and Sintering Mechanism of Lightweight Sludge-Flyash-Clay Ceramics

2011 ◽  
Vol 383-390 ◽  
pp. 3346-3351
Author(s):  
Min Yue ◽  
Qin Yan Yue ◽  
Yuan Feng Qi ◽  
Bao Yu Gao ◽  
Hui Yu
Keyword(s):  
Fly Ash ◽  
Sewage Sludge ◽  
Physical Properties ◽  
Sintering Temperature ◽  
Raw Material ◽  
Control Factor ◽  
Sintering Process ◽  
Technical Parameters ◽  
Starting Point ◽  
Clay Ceramics

This study investigated the properties of lightweight sludge-flyash-clay ceramic by different sintering temperature. Different ratios of dry sewage sludge and fly ash with 50 wt% of clay were mixed and pressed into raw pellets. After drying and preheating treatment, the raw pellets were sintered at temperatures ranging from 1050 to 1150 °C, in 25 °C increments for 10 min. The physical properties (bulk density, grain density, water absorption and rate of expansion) were the indexes used to determine the technical parameters for the preparation of lightweight sludge-fly ash ceramic pellets. The results suggested that temperature was the key control factor of sintering process, and 1150 °C was the starting point of the bloating reaction. In the case of a small fraction in the raw material configuration, the mass ratios of sludge to fly-ash had little effect on the properties.

The Basic Study on the Relationship between the Physical Properties of Coating Pigment and the Coated Paper Quality

2011 ◽  
Vol 65 (12) ◽  
pp. 1293-1297
Author(s):  
Keiko Hashiguchi ◽  
Takehiro Yoshimatsu ◽  
Masanori Kawashima
Keyword(s):  
Physical Properties ◽  
Coated Paper ◽  
Basic Study ◽  
The Relationship ◽  
Paper Quality

LANXIDE 92-X-2050

Alloy Digest ◽  
1997 ◽  
Vol 46 (11) ◽  
Keyword(s):  
Silicon Carbide ◽  
Physical Properties ◽  
Tensile Properties ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Iron Alloy ◽  
Alloy Matrix ◽  
Die Castings ◽  
Silicon Carbide Particulate

Abstract Lanxide 92-X-2050 is an aluminum-10 Silicon-1 Magnesium-1 Iron alloy with 30 vol.% of silicon carbide particulate. This metal-matrix composite is designed to outperform the unreinforced counterpart. The alloy-matrix composite is available as die castings. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fatigue. It also includes information on casting. Filing Code: AL-343. Producer or source: Lanxide Corporation.

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