Yttria-stabilized zirconia (YSZ) was implanted with 15 keV Fe or Ti ions up to a dose of 8 x 1016 at cm -2. The resulting "dopant" concentrations exceeded the concentrations corresponding to the equilibrium solid solubility of Fe2Oa or TiO2 in YSZ. During oxidation in air at 400 ° C, the Fe and Ti concentration in the outermost surface layer increased even further until a surface layer was form...

Films of Ti oxide, Zr oxide, Ce oxide, Ti-Ce oxide, and Zr-Ce oxide were made by means of reactive dc magnetron sputtering in a multitarget arrangement. The films were characterized by x-ray diffraction and electrochemical measurements, both techniques being firmly connected to stoichiometric information. The optical constants n and k were evalued from spectrophotometry and from variable-angle ...

Hierarchical macro-mesoporous silica materials co-incorporated with Cr and Ti 12 (MM-Si-Cr-Ti) were directly synthesized by adopting close-packed array of polystyrene 13 microsphere as hard template for macropore through a simple soaking-calcination way, where 14 the Si/Ti ratio was fixed at 200 and Si/Cr ratio varied from 200-10. Ti specie is highly dispersed 15 in the porous matrix and Cr spe...

In the present work, structural characteristics and tribological properties of the Ti-Al-Cr-(Si)-C-N nanocomposite films coated on the SPK 1.2080 tool steel byPVD technique have been investigated. The PVD coating process was carried out using Ti (Si) Al and CrAl cathodes at 150 A current, 40 V bias and (Ar)0.1(CH4)0.45(N2)0.45 gas mixture for 50 min. Evaluations were conducted by OM, FESEM, AFM...

In this work, new nanoporous silica (Korea Advanced Institute of Science and Technology-6 (KIT-6)-dried or KIT-6-calcined) incorporated with isolated Ti materials with different Si/Ti ratios (Si/Ti = 200, 100, and 50) has been synthesized and investigated to establish photocatalytic reduction of CO2 in the presence of H2O vapors. The properties of the materials have been characterized through N...

In the Multicut problem, we are given an undirected graph G = (V,E) and a family T = {(si, ti) | si, ti ∈ V } of pairs of requests and the objective is to find a minimum sized set S ⊆ V such that every connected component of G \ S contains at most one of si and ti for any pair (si, ti) ∈ T . In this paper we give the first non-trivial algorithm for Multicut running in time O(1.987).

A ternary thin film combinatorial materials library of the valve metal system Hf-Ta-Ti obtained by co-sputtering was studied. The microstructural and crystallographic analysis of the obtained compositions revealed a crystalline and textured surface, with the exception of compositions with Ta concentration above 48 at.% which are amorphous and show a flat surface. Electrochemical anodization of ...

A procedure for the preparation of semiconductor anodes using mixed-metal oxides bound together and protected with a TiO2 nanoglue has been developed and tested in terms of the relative efficiencies of the oxygen evolution (OER), the reactive chlorine species evolution (RCS), and the hydrogen evolution (HER) reactions. The composition of the first anode is a Ti metal substrate coated with IrTaO...

This paper uses X-ray absorption spectroscopy to study the electronic structure of the high-k gate dielectrics including TM and RE oxides. The results are applicable to TM and rare earth (RE) silicate and aluminate alloys, as well as complex oxides comprised of mixed TM/TM and TM/RE oxides. These studies identify the nature of the lowest conduction band d* states, which define the optical band ...