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Magnesium alloy and aluminium alloy are the promising structural light metals. The demand for magnesium alloy and aluminium alloy are increasing rapidly. A large amount of waste in the form of chips and scraps is produced in the manufacturing process such as die casting and plastic forming. In this paper, a method for recycling magnesium alloy and aluminium alloy chips or scraps directly by solid...
The metal porous body has interesting structural characteristics such as high specific strength and lightness and high antivibration, damping and sound absorption properties and also has excellent functional characteristics such as unique thermal insulation and catalytic carrier absorption and so on. With these advantages, recently, it has been using a high performance lubricant bearing, filters for...
Gas atomization is the conventional and well-known methods to produce metal powders. This method can be used to get high sphericity and fluidity of the powders. The metal powders produced by the gas atomization have a rapid cooling rate because of fast heat transfer between the droplets and the injected gases. The gas atomization can be used to produce various metal powders with melting temperatures...
It has been found that metal nanopowders produced by wire electrical explosion have stored energy, which is higher than the standard heat of melting. Continuing studies on stored energy the influence of electrons flow (accelerator ELU-4) on iron and nickel nanopowders has been investigated in the paper. It was found that the thermal effect of oxidation for iron nanopowders after exposure increased...
In cognitive radio sensor networks, it is a critical work to localize the location of primary user (PU) for radio resource utilization. Most of received signal strength (RSS)-based PU localization schemes assume that path loss exponent (PLE) is a deterministic. This assumption however is impractical because PLE varies according to time and space in the network. With the motivation, in this paper we...
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