Metals that work at high temperatures (for instance, superalloys in gas-turbines) depend on thermally grown oxide (TGO, commonly alumina) to withstand corrosion attack. Nickel Aluminide (NiAl) as one superior alumina TGO former plays an important role in protective coatings for turbine blades in gas-turbine engines used for aircraft propulsion and power generation. Lowering TGO growth rate is e...

A morphological strategy consisting of nanocasting synthesis nickel aluminate spinel precursor was addressed. Two nanocasted catalysts were synthesized involving different template-removal procedures (i.e., Teflon-assisted calcination vs. NaOH washing) for recovery. As a reference, NiAl2O4 supported by SBA-15 and bare selected. The obtained solids characterized in detail, examining their textur...

The pressure-volume-temperature equation of state of the intermetallic compound NiAl was calculated theoretically, and compared with experimental measurements. Electron ground states were calculated for NiAl in the CsCl structure, using ab initio pseudopotentials and density functional theory (DFT), and were used to predict the cold compression curve and the density of phonon states. It was des...

Mesoporous nano Ni-Al2O3 catalysts were prepared by using Pluronic P123 (P123) and fatty alcohol polyoxyethylene ether (AEO-7) as structure directing agents (SDAs), applied for CO2 methanation in a continuously stirred tank reactor (CSTR). Compared with NiAl-A AEO-7 SDA NiAl-N without SDA, NiAl-P possesses ordered mesopores, high Ni dispersion, large metal surface area amounts of adsorbed CO2, ...

Bulk metallic glasses are a relatively new class of amorphous metal alloy which possess unique mechanical and magnetic properties. The specific concentrations and combinations of alloy elements needed to prevent crystallization during melt quenching remains poorly understood. A correlation between atomic properties that can explain some of the previously identified glass forming ability (GFA) a...

In this research, NiAl-LDH was synthesized using the coprecipitation method and modified with biochar graphite to produce NiAl-biochar NiAl-graphite composite materials. The adsorbent that has been is used for application of adsorption Fe(II) ions in aqueous solution. resulting material characterized by XRD (X-ray Diffraction) analysis, spectrophotometer FT-IR, BET analysis determine specific s...

In this study, SHS was used to produce metal-intermetallic-ceramic laminate AlMg6-NiAl-TiC composite. The experiment conducted without a cylindrical powder pellet holder produced no joint between the NiAl and AlMg6 sheet. On other hand, inside (CPPH) with blind hole joint. It found that sheet had temperature of 400–550 °C across its entire thickness during SHS. study microstructure energy-dispe...

Trefwoorden: metalen en metaallegeringen ; vastestofchemie / diffusie / microstructuur / intermetallische verbindingen / grensvlakverschijnselen ; Kirkendall effect Subject headings: metals and metal alloys ; solid state chemistry / diffusion / microstructure / intermetallic compounds / interfacial phenomena ; Kirkendall effect To my Parents Contents Chapter 1: Introduction 1 1.1 Recent develop...