Introducing nanoscale planar defects instead of adding alloying elements has been applied to improve the mechanical properties materials. In this paper, we show that, from an atomistic perspective, hardness nickel aluminide (Ni3Al) can be effectively enhanced by complex stacking faults and twinning boundary. The size effect is induced a competition between hardening because regeneration softeni...

The Nb-based superconductor-insulator-superconductor (SIS) tunnel junctions have been broadly used in many applications. The critical current density ( ), one of the most important parameters of SIS tunnel junction, is usually controlled by the oxygen exposure ( 2) of the Al oxidation process. R. E. Miller et al. demonstrated the relation between and oxygen exposure using the SNEP process. Howe...

Release of wastewater into the environment due to anthropogenic industrial or commercial activities is an emerging challenge for developing countries. This study was conducted to investigate the use of two kinds of available clay coagulants namely Shendi and Singa, and their combination with Poly Aluminium Chloride (PAC) for wastewater treatment. The experiments were designed in Completely Rand...