The use of aluminum oxide as the gate insulator for low temperature (600 C) polycrystalline SiGe thin-film transistors (TFT’s) has been studied. The aluminum oxide was sputtered from a pure aluminum target using a reactive N2O plasma. The composition of the deposited aluminum oxide was found to be almost stoichiometric (i.e., Al2O3), with a very small fraction of nitrogen incorporation. Even wi...

A batch experiment was conducted to compare the Cu scavenging capacity between two different red mud types: the first one was a highly basic red mud derived from a combined sintering and Bayer process, and the second one was a seawater-neutralized red mud derived from the Bayer process. The first red mud contained substantial amounts of CaCO3, which, in combination with the high OH activity, fa...

The failure of the Ajka red mud depository in October 2010 led to the largest single release of red mud into the surface water environment. This study provides a comparative assessment of stream sediment quality in the Torna-Marcal-Rába catchment between post-disaster surveys (2010) and follow up surveys at an identical suite of 21 locations in 2013. The signature of red mud apparent in initial...

Abstract This paper presents research into the creation of refill friction stir spot welding (RFSSW) single-lap joints 6082-T6 aluminum alloy and roll-bonded AlCu bimetallic sheet. The latter sheet comprises EN AW-1050A electrolytic copper M1E in Z6 temper condition (after rolling) with a 1:1 ratio Cu:Al layers. parameters involved variable plunge depth time. mechanical properties were determin...

Fabrication and characterization of aluminum matrix composites containing different volume fractions of Ni3Al powder (5-40 Vol%) were investigated. Ni3Al powder was produced by mechanical alloying of elemental nickel and aluminum powder mixture. Al-Ni3Al composite parts were prepared using a powder metallurgy route involving two stages Al and Ni3Al powder mixtures were first compacted under 500...

In this study electrical discharge process was used to increase surface wear resistance of pure aluminum. Pulse-on-time and pulse current were considered as input parameters of the electrical discharge process. Experimental results reveal that the electrical discharge process is a successful method for improving the surface wear resistance of aluminum, so that this method has greatly increased ...

Joining by forming operations presents powerful and complex joining techniques. Clinching is a well-known process for use in sheet metalworking. Currently, clinched joints are focusing on mechanically enhanced connections. Additionally, the demand integrating electrical requirements to transmit currents will be increased future. This integration particularly important, instance, e-mobility sect...

The yield criterion, or so-called function, plays an important role in the study of plastic working a sheet because it governs deformation properties during plastic-forming process. In this paper, we propose novel anisotropic function useful for describing behavior various sheets. proposed includes version second stress invariant J2 and third J3. can explain sheets by introducing parameters α β...