ChemInform Abstract: THE OXIDATION CHARACTERISTICS OF ELECTRODEPOSITED NICKEL COMPOSITES CONTAINING SILICON CARBIDE PARTICLES AT HIGH TEMPERATURE

1978 ◽  
Vol 9 (24) ◽  
Author(s):  
F. H. STOTT ◽  
D. J. ASHBY
Keyword(s):  
Silicon Carbide ◽  
High Temperature ◽  
Oxidation Characteristics ◽  
Electrodeposited Nickel ◽  
Nickel Composites ◽  
Silicon Carbide Particles ◽  
Carbide Particles

High-Temperature Reliability of Advanced Ceramics

2000 ◽  
Vol 123 (1) ◽  
pp. 64-69 ◽  
Author(s):  
Tatsuki Ohji
Keyword(s):  
Silicon Carbide ◽  
High Temperature ◽  
Silicon Nitride ◽  
Grain Boundaries ◽  
Creep Resistance ◽  
Structural Reliability ◽  
High Efficiency ◽  
Silicon Carbide Particles ◽  
Silicon Carbide Particulate ◽  
Carbide Particles

This paper describes high-temperature reliability, particularly creep and creep rupture behavior of three engineering ceramics—silicon nitride, silicon carbide, and alumina-based silicon-carbide-particulate ceramics—which are considered the most potential candidates for the use of blades of high-efficiency ceramic gas turbine. The structural reliability of silicon nitride is very often limited due to the softening of glassy phases formed at grain boundaries. On the other hand, silicon carbide, which generally does not contain glassy phase at the grain boundaries, shows excellent creep resistance even at very high temperatures. Finally, it is shown that creep resistance of alumina can be markedly improved by dispersing nano-sized silicon carbide particles into the grain boundary.

The Effect of SiC Surface Treatment on the Interface Bonding Behavior of SiC/Cu Composite Particles

2012 ◽  
Vol 512-515 ◽  
pp. 951-954
Author(s):  
Bing Bing Fan ◽  
Huan Huan Guo ◽  
Jian Li ◽  
Hai Long Wang ◽  
Ke Bao ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Surface Treatment ◽  
Practical Importance ◽  
Functional Materials ◽  
Decomposition Reaction ◽  
Reduction Reaction ◽  
Temperature Oxidation ◽  
Reaction Method ◽  
Silicon Carbide Particles ◽  
Carbide Particles

The SiC/Cu composite is one of the "structural-functional" materials. It shows good mechanical properties and very high thermal, high electrical conductivity etc. But the co-dispersion, wetting and bonding between SiC and Cu interface are of practical importance in the preparation of SiC/Cu composites. In this work, surface treatment techniques such as high-temperature oxidation, acid dipping and alkaline wash were adopted separately on silicon carbide particles, in order to improve the wettability and physical and chemical compatibility between silicon carbide and copper, then we used the replacement reaction method and decomposition-reduction reaction method to generate Cu coating on the surface of silicon carbide. The results shown that, the surface of silicon carbide particle which treated by alkaline wash was cleaner and more rough than that only treated by high-temperture oxidation, moreover, the specific surface of the particle was increased, which resulted in a compact layer of Cu coating. for the same silicon carbide particles, the effect of the Cu coating prepared by decomposition reaction method was better than that by reduction reaction method.

High Pressure Sintering of Silicon Carbide with Mg-Cr3C2 Composite Additive

2021 ◽  
Vol 1035 ◽  
pp. 768-772
Author(s):  
Jing Kun Li ◽  
Xue Ping Ren ◽  
Qiang Yan ◽  
Yan Ling Zhang ◽  
Hong Liang Hou
Keyword(s):  
Silicon Carbide ◽  
High Pressure ◽  
Magnesium Alloy ◽  
Chromium Carbide ◽  
Sintered Ceramic ◽  
High Pressure Sintering ◽  
C 30 ◽  
Silicon Carbide Particles ◽  
New Phase ◽  
Carbide Particles

Porous silicon carbide was sintered at 1300 °C/30 MPa for 2 h with 4 wt.% magnesium alloy and 4 wt.% chromium carbide composite additives. The sintered ceramic presented density of around 92% of the theoretical density. No new phase was observed after sintering. Mg segregates around chromium carbide particles in sintered ceramic. The silicon carbide particles were mainly bonded by melt magnesium alloy and chromium carbide diffused in solid state. The voids existed in the sintered ceramic, but much more fracture occurred in silicon carbide particles during bending due to high bonding strength of sintering necks. Some voids existed in the ceramic, which act as crack sources during fracture.

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