X-ray crystallographic data on aluminum silicon carbide, ?-Al4SiC4 and Al4Si2C5

1980 ◽  
Vol 15 (3) ◽  
pp. 575-580 ◽  
Author(s):  
Zenzaburo Inoue ◽  
Yoshizo Inomata ◽  
Hidehiko Tanaka ◽  
Haruo Kawabata
1989 ◽  
Vol 170 ◽  
Author(s):  
Benji Maruyama ◽  
Fumio S. Ohuchi ◽  
L. Rabenberg

AbstractX-ray Photoelectron Spectroscopy (XPS) was used to investigate the influence of O2 and H2O on the formation of aluminum carbide at aluminum-carbon and aluminumsilicon carbide interfaces. It was determined that dosing the interfaces with H2O catalyzed the formation of aluminum carbide in both the aluminum-carbon and aluminum-silicon carbide systems. This result is consistent with the oxidation model of carbide formation [1], previously developed to understand the kinetics of aluminum carbide formation at graphite-aluminum interfaces. These results imply that the formation of aluminum carbide in graphite and silicon carbide reinforced metal matrix composites, which severely degrades the composite mechanical properties by degrading the fiber and interface strength [2], is catalyzed.


Material is one or more substances that form an object. Due to an attractive mechanical characteristic, materials are commonly selected for structural applications. Recently, the hybrid MMC has been developed and highly an innovative trend in material science. The current study is concentrated on the formation of an innovative hybrid MMC by utilizing aluminum, silicon carbide and fly ash particulates of bagasse. In this study, the physical characteristics of Aluminum 6061 were evaluated by adding Sic, fly ash particulates of bagasse and observed that this is the hardest substance. The compositions were added until the final level and a method of stir casting has been utilized to fabricate Al MMC. XRD ie x-ray diffraction was utilized to analyze the structural characterization of MMC and optical microscopy was utilized to analysis the microstructure on MMC. In this study, the mechanical characteristics like hardness, elongation, yield strength, UTS and density have been performed on MMC. Aluminum was added with 5% of silicon carbide and 10% of fly ash particles of bagasse in one case and in other case aluminum was added with 10% of fly ash particles of bagasse and 10% of silicon carbide. As a result, it was detected that there is an improvement in the hardness and UTS and a reduction in the density and elongation of the composites in comparison to plain aluminum. This shows that the aluminum-silicon carbide-fly ash particles of bagasse MMC substantially differ throughout all characteristics.


2017 ◽  
Vol 11 (5) ◽  
Author(s):  
Ahmad E. Eladawi ◽  
Saad A. A. Sayed ◽  
Hammad T. Elmetwally ◽  
Tamer O. Diab

1991 ◽  
Vol 6 (6) ◽  
pp. 1131-1134 ◽  
Author(s):  
Benji Maruyama ◽  
Fumio S. Ohuchi

Aluminum carbide was found to form catalytically at aluminum-silicon carbide interfaces upon exposure to water vapor. Samples, composed of approximately 2 nm thick layers of Al on SiC, were fabricated and reacted in vacuo, and analyzed using XPS. Enhanced carbide formation was detected in samples exposed to 500 Langmuirs H2O and subsequently reacted for 600 s at 873 K. The cause of the catalysis phenomenon is hypothesized to be the weakening of silicon-carbon bonds caused by very strong bonding of oxygen atoms to the silicon carbide surface. Aluminum carbide formation is of interest because of its degrading effect on the mechanical properties of aluminum/silicone carbide reinforced metal matrix composites, as well as its effect on the electrical properties of aluminum metallizations on silicon carbide layers in microelectronic components.


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