Hydrogen embrittlement limits the service life of various metallic components by causing a transition from ductile to brittle failure inherently alloys. In this work, using first-principles calculations, effect interstitial hydrogen on ideal shear strength across metals (Al, Ni, Fe, Nb, Ti, and Zr) its implications plasticity are discussed. The presence led volumetric expansion, which in turn h...

Ti-Ni films with various Ni contents (16.5, 22.0, 33.5 at. %) were deposited on Al alloy substrates using DC magnetron co-sputtering. The effects of target power and substrate bias (?10, ?70, ?110 V) morphologies, crystallography, nanomechanical properties scratch behavior studied. All the exhibited a BCC structure ?-Ti (Ni). grew normal columnar good bonding to substrates. When increasing bias...

Dehydrogenation of Me(2)NH·BH(3) (1) by group 4 metallocene alkyne complexes of the type Cp(2)M(L)(η(2)-Me(3)SiC(2)SiMe(3)) [Cp = η(5)-cyclopentadienyl; M = Ti, no L (2Ti); M = Zr, L = pyridine (2Zr)] and group 4 metal amido complexes of the type M(NMe(2))(4) [M = Ti (8Ti), Zr (8Zr)] is presented.

This study employs Particle Induced X-ray Emission (PIXE) analytical technique for the analysis of elemental concentrations in the roadside soils in Calabar, Nigeria, in order to ascertain the levels of heavy metals in relation to traffic density. Twenty one elements, viz., Al, Si, P, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Ga, As, Rb, Sr, Zr, Nb and Pb with concentrations (in ppm), ranging f...

Single crystals of trizirconium nickel hepta-anti-monide were synthesized from the constituent elements by arc-melting. The compound crystallizes in a unique structure type and belongs to the family of two-layer structures. All crystallographically unique atoms (3 × Zr, 1 × Ni and 7 × Sb) are located at sites with m symmetry. The structure contains 'Zr(2)Ni(2)Sb(5)' and 'Zr(4)Sb(9)' fragments a...

The intermetallic TiAl3 has been used as a thermally stable cap for Ti/Al ohmic contacts to n-GaN. The electrical performance of the TiAl3-capped contact is nearly the same as that of a standard Ti/Al/Ni/Au contact processed on the same substrate, but the Ti/Al/TiAl3 contact’s performance is optimized at a much lower temperature. The Ti/Al/TiAl3 contact achieved a lowest specific contact resist...