The mechanical properties and deformation behavior of a Cu-Cr-Zr alloy after solution treatment (ST) or aging (ST+AT) equal channel angular pressing (ECAP) at elevated temperature were investigated. ECAP led to strengthening degradation plasticity compared with the initial state. 1 2 passes 200 °C was almost same. An increase in promoted uniform strain plasticity. number gradual strength. YS UT...

Titanium (Ti) and its alloys have been widely used in clinics for years. However, their bio-inert surface challenges application in patients with compromised surgical conditions. Numerous studies were conducted to modify the surface topography and chemical composition of Ti substrates, for the purpose of obtaining antibacterial, angiogenic, and osteogenic activities. In this study, using green ...

In this paper, the influence of small additions Cr, Mo, Cu, Ni, B, Ca, Zr, and Ce on hot ductility advanced high-strength steels (AHSS) has been reviewed. Most these have a positive effect in improving straightening during continuous casting operations should be considered when problems with cracking are encountered. many cases, reason for generally but important improvements is not known certa...

Shape memory polymer (SMP) nanocomposites with a fast electro-actuation speed were prepared by dispersing Cu-decorated carbon nanotubes (CNTs) (Cu-CNTs, 1 wt %, 2 wt %, and 3 wt %) in a polylactic acid (PLA)/epoxidized soybean oil (ESO) blend matrix. The shape memory effect (SME) induced by an electrical current was investigated by a fold-deploy "U"-shape bending test. In addition, the Cu-CNT d...

A tandem preconcentration method integrating chelating resin adsorption and La coprecipitation was applied to an analysis of Lake Baikal water by high-resolution ICP-MS. As a result, 56 elements were determined in Lake Baikal water: Ca, Na, Mg, K, Si, Sr, B, Li, Ba, P, Fe, Al, Mo, Zn, Mn, Rb, U, As, V, Cu, Pb, W, Y, Cs, Se, Cr, Ni, Ti, Sb, Zr, Sn, Co, Cd, Rh, Te, Hf, Nb, Ru, Ga, Sc, Th, Bi, and...

The research in NANE group is focused on the development of the NAA (Neutron Activation Analysis) methodologies and on their application to environment, nutrition and epidemiology studies. NANE is a multidisciplinary group that has the collaboration of researchers from different fields of science: environment, chemistry, physics, environmental health, biology, biochemistry and geology. The capa...

industries, its nuclear properties in the pure metallic form make it highly desirable for nuclear applications. Zr is highly corrosion resistant and has a high melting point (2128 K) with a low thermal neutron absorption cross-section of Zr T = 0.18 b, which is significantly smaller than that of hafnium Hf T =115 b) (Speer, 1982), an element that coexists with Zr in nature. This makes Zr ideal ...

Effects of fifteen particulate objects, fourteen metals and one non-metal on cell viability of osteoblast-like cells were studied in vitro, to determine whether an adverse effect on cells could be induced by the particulate ferm or soluble ions. The Al, Ti, Zr, Nb, Ta, Cr, Mo, and Fe particulates depressed cell viability at higher particulate concentrations, but their extracts yielded no effect...