In order to clarify the controversies of hardening mechanism for TiN/SiNx-based nanocomposite films, the microstructure and hardness for TiN/SiNx and TiAlN/SiNx nanocomposite films with different Si content were studied. With the increase of Si content, the crystallization degree for two series of films firstly increases and then decreases. The microstructural observations suggest that when SiN...

Tin-oxide and graphene (TG) composites were fabricated using the Electrostatic Spray Deposition (ESD) technique, and tested as anode materials for Li-ion batteries. The electrochemical performance of the as-deposited TG composites were compared to heat-treated TG composites along with pure tin-oxide films. The heat-treated composites exhibited superior specific capacity and energy density than ...

The development of interfacial coherency stresses in TiN/AlN bilayer and multilayer films was investigated by finite element method (ABAQUS) using the four-node bilinear quadrilateral axisymmetric element CAX4R. The TiN and AlN layers are always in compression and tension at the interface, respectively, as may be expected from the fact TiN has larger lattice parameter than AlN. Both, the bi-lay...

the stereospecific polymerization of conjugated dienes began in 1954 with the first catalysts obtained by combining ticl4 or ticl3 with aluminum-alkyls, i.e. the catalytic systems previously employed for ethylene and propylene polymerizations. subsequently, many other catalytic systems were obtained and examined by a combination of transition metal or lanthanide compounds with appropriate alkyl...

The development of efficient and durable catalysts is critical for the commercialization fuel cells, as catalysts’ durability reactivity dictate their ultimate lifetime activity. In this work, amorphous silicon-based ceramics (Si–C–N Si–Al–C–N) [email protected]–Al–C–N nanocomposites were developed using a precursor derived approach. nanocomposites, TiN nanocrystals (with sizes in range 5–12 nm...

For the first time, it has been observed that tin island films used in surface infrared experiments give rise to an electromagnetic enhancement of the infrared absorption spectrum. The surface enhancement of the infrared (SEIR) absorption by tin island films is shown for evaporated nanometric films of 5,14-pentacenedione (Q2) and naphthalic 1,8:4,5-dianhydride (NTCDA). The experiments and spect...

Furfural is a promising platform chemical that can be catalyzed from lignocellulose biomass. In this study, novel micro-mesoporous carbon supported tin oxide catalyst (MC-SnOx) was developed to convert xylose into furfural in low sodium chloride (NaCl) concentration and acid-free biphasic system. The catalysts synthesized by annealing 400 °C 600 for 3.5h were characterized BET, SEM, XPS, XRD, N...

Most foods contain very low concentrations of tin, usually below 10 mg/kg, although canned foods may contain higher concentrations as a result of the slow dissolution of the tin coating used on the inside of some food cans to protect the steel body of the can from corrosion. An inductively coupled plasma-mass spectrometry (ICP-MS) method following microwave digestion was developed and evaluated...