North ern Van cou ver Is land is richly en dowed in a va ri ety of base and pre cious-metal de pos its. For ex am ple, the Cu-Mo-Au por phyry de posit at the for mer Is land Cop per mine (1971–1994) pro duced ap prox i mately 345 mil lion tonnes of ore with av er age head grades of 0.41 wt% Cu, 0.017% Mo, 0.19 g/t Au and 1.4 g/t Ag (Perello et al., 1995). Other por phyry de pos its are known to...

The microsegregation behavior of electron beam (EB, and gas tungsten arc (GTA) welds of Al-Cu alloys covering a range from 0.19 to 7.74 wt% Cu were characterized for dendrite core concentrations and fraction eutectic solidification. Although a single weld speed of 12.7 mm/sec was used, some differences were observed in the segregation behavior of the two weld types. The microsegregation behavio...

Increasing the strength of Al-based alloys is an important issue physical metallurgy and industrial processing. Severe plastic deformation related extension solid solubility during mechanical alloying provide opportunity for significant strengthening due to grain refinement, solution, precipitation mechanisms. During alloying, anomalous increase in solid-state elements occurs. The present study...

One of the most important applications of carbon nanotubes (CNTs) is as reinforcement of metal matrix composites, because of their excellent mechanical properties. In this study, Al-TiO2-multi walled carbon nanotubes (MWCNTs) nanocomposite is fabricated using isostatic pressing followed by hot extrusion. Mechanical alloying is used to mix powders of aluminium, TiO2 and MWCNTs. TiO2 with the amo...

With the effect of technological advances, use electrical and electronic devices has increased dramatically in recent years. Wireless technologies related applications are mostly preferred for communication these with each other. Thus, people easily exposed to electromagnetic waves daily life. The extensive global raises question their possible biological effects on human health. Also, influenc...

We have investigated formation of oxides on quasicrystalline and crystalline alloy surfaces of similar composition, in different oxidizing environments. This includes a comparison between a quaternary orthorhombic approximate of Al-Cu-Fe-Cr quasicrystal and the ternary AI-Cu-Fe quasicrystalline and crystalline phases. We noted that each sample showed the following common trends: preferential ox...

In this work, surface Ti-Cu-Al-V alloy was synthesized by compression plasma flows impact on Ti-6Al-4V titanium preliminarily coated copper. The treatment of Cu/Ti-6Al-4V samples carried out three pulses generated in the nitrogen atmosphere (energy density absorbed varied range 26-43 J/cm2 per pulse). phase and elemental composition, structure, microhardness friction coefficient formed were inv...