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Article
Effect of Magnesium Addition on the Cell Structure of Foams Produced From Re-melted Aluminum Alloy Scrap
Closed-cell foams were produced from re-melted aluminum alloy scrap that contained 0.13 wt pct Mg magnesium in the as-received state and higher levels after adding 1, 2, or 5 wt pct Mg. The excess Mg gave rise...
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Article
Vacuum Foaming of Aluminum Scrap
In this study, scrap from the automotive industry was used to produce aluminium foams under vacuum. Chips of an aluminium alloy LM26 were melted and 1wt. % of Mg was added for creating a viscous casting with u...
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Article
Capillarity-Driven Infiltration of Alumina Foams with an Al-Mg Alloy: Processing, Microstructure, and Properties
Alumina ceramic foams have been infiltrated with an Al-10 Mg alloy, by a capillarity-driven process, to create interpenetrating composites. Infiltration maps are presented for three different foam types which ...
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Article
Flux-assisted spreading of an Al–7 wt%Si alloy on TiC
The effect of a K–Al–F-based flux was investigated on the wettability of TiC by an Al–7 wt%Si alloy in the interval of temperatures between 660 and 900 °C in Ar and in atmospheric air. Null spreading was obser...
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Article
Protective effects of l-selenomethionine on space radiation induced changes in gene expression
Ionizing radiation can produce adverse biological effects in astronauts during space travel. Of particular concern are the types of radiation from highly energetic, heavy, charged particles known as HZE partic...
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Article
Countermeasures against space radiation induced oxidative stress in mice
Of particular concern for the health of astronauts during space travel is radiation from protons and high atomic number (Z), high energy particles (HZE particles). Space radiation is known to induce oxidative str...
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Article
Fracture behaviour of notched and un-notched powder metallurgical (P/M) green compacts
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Article
Microstructure and dispersion of Cu-TiC X master alloys into molten Cu and the relation to contact angle data
Cu-TiC x composites have been made self-propagating high temperature synthesis of Cu-Ti-C mixtures. It was found that as the C/Ti ratio decreases, wetting of the carbide, by wha...
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Article
Flux-assisted infiltration of liquid Al-6063 into TiC beds in air
This study details trials to produce aluminium metal matrix composites reinforced with TiC particles by means of a flux-assisted infiltration technique. Whilst no infiltration of TiC beds occurred, by using a ...
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Article
Effect of tube length on the bucking mode and energy absorption of Al foam-filled tubes
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Article
Effect of bonding strength on the energy absorption of Al foam-filled cylindrical tube
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Article
Aspects of the reproducibility of mechanical properties in Al based foams
Al foams have been manufactured via a PM route and compression tested. Testing has shown that density-properties relationships can be constructed which are then valid for the prediction of mechanical response ...
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Article
Fracture toughness measurements of powder metallurgical (P/M) green compacts: A novel method of sample preparation
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Article
Effect of foaming configuration on expansion
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Article
Evolution of foam structure during the heating of extruded Al-Si-TiH2 powders
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Article
The microstructure and mechanical properties of Al-Si-B4C metal matrix composites
B4C particles have been added to molten Al- 7wt% Si- 0.3 wt% Mg alloys, at levels of 5 and 10 wt%, using a propriatory K-Al-Ti-F flux. The resulting composites were examined metallographically and mechanically t....
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Article
The wetting and spontaneous infiltration of ceramics by molten copper
Infiltration trials have been conducted by filling Cu tubes withceramic powders and melting them under argon. No externalforces were applied; successful infiltration of the ceramicrelied solely upon favourable...
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Article
The microstructure and mechanical properties of TiC and TiB2-reinforced cast metal matrix composites
TiC and TiB2 particles have been spontaneously incorporated into commercial purity aluminum melts through the use of a K-Al-F-based liquid flux that removes the oxide layer from the surface of the melt. The combi...
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Chapter
Radiation Injury and Carcinogenesis
Radiation is known to be a universal carcinogen, capable of causing cancer in most mammalian tissues (1). The specific type of radiation injury which leads to cancer, however, is still unknown; many hypotheses...
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Article
Demonstration of intra- and extracellular localization of bullous pemphigoid antigen using cryofixation and freeze substitution for postembedding immunoelectron microscopy
Using low-temperature postembedding techniques for immunoelectron microscopy, we succeeded in demonstrating the precise localization of bullous pemphigoid antigen (BP-Ag) in normal human skin. Small pieces (<1 mm
