A new ternary aluminide containing actinide, ThFe2Al10, was observed in the Al–8 at.%Th–16 at.%Fe alloy. Microstructural study has shown that grains of the ThFe2Al10 compound contain numerous twins that are characterized by (021) twin plane and [01¯2] twinning direction. The ThFe2Al10 phase a...

Metastable ThFe2Al10 ternary aluminide was observed in the as-cast Al-6.1at.%Th-6.1at.%Fe alloy. It crystallizes into an orthorhombic structure belonging to Pmmn space group symmetry and possesses unit cell with parameters a = 9.076 Å, b = 8.998 Å and c = 5.031 Å.The ThFe2Al10 (Pmmn) phase can b...

The purpose is to investigate the role of yttrium addition in improving hydride embrittlement resistance in Zr-1Nb alloy, because yttrium addition has been widely used to improve oxidation resistance of alloys. The results suggest that 0.2 wt.% yttrium addition can effectively lower hydrogen abs...

One form of degradation of platinum-modified nickel-aluminide (NiPtAl) coatings on single-crystal superalloys at high temperatures involves a surface instability known as rumpling. In this work, the evolution of rumpling during isothermal and cyclic oxidation at 1150 °C of a NiPtAl aluminide co...

New technologies often lead to the development of new materials with better mechanical, thermal and chemical behaviors. Recently, transition metals (TM), or aluminide intermetallics, for example TiAl, NiAl, FeAl, and Fe3Al, have attracted considerable interest due to their unique properties such...

Oxygen-active elements have recently been found beneficial to the wear resistance of (Cr, Al)-containing alloys in corrosive environments. In this work, the performance of aluminide coating modified with yttrium, a typical oxygen-active element, under different erosion conditions was evaluated. ...

The beneficial effect of yttrium on the oxidation and hot corrosion resistance of electron beam-physical vapour deposition and low pressure plasma spraying overlay coatings has been confirmed by many studies. However, these coating processes have two disadvantages: (1) a restriction on the appli...

The effects of yttrium on the mechanical properties and chemical stability of passive film of an aluminide coating on 1045 steel were studied. The chemical composition of the coating was analyzed using energy-dispersive spectrometry (EDS). The scratch resistance of passive films on Y-free and Y-...

Ti-Ni shape memory alloys with and without Y addition were aluminized at 650 °C using a pack-cementation method. The influences of various amounts of Y additions on the microstructure and the isothermal oxidation behaviors of aluminide coatings in air at 700 °C were investigated. The results s...

Recent studies demonstrate that an oxygen-active element such as yttrium is beneficial to the wear resistance of aluminide coating in corrosive environments. In this research, mechanical properties of different characteristic layers or domains of an aluminide coating modified with yttrium were i...

The new compound NdRh4Al15.37 has been prepared by reaction of the elemental components with an excess of aluminium at high temperature and cooling at a slow rate. It crystallizes with the tetragonal space group P42/nmc, a=912.4(1) pm, c=1561.6(3) pm, Z=4. The structure was determined using four...

The ternary aluminides R2Rh3Al9 (R=Y, La–Nd, Sm, Gd–Tm, Lu), R2Ir3Al9 (R=Y, La–Nd, Sm, Gd–Lu), and R2Pd3Al9 (R=Y, Gd–Tm) have been prepared by arc melting of the elemental components with an excess of aluminum and dissolving the aluminum-rich matrix in hydrochloric acid. They crystallize wi...

The effects of Sm additions (0, 0.5 wt.%, 1.0 wt.% and 1.5 wt.%) on the eutectic Si and β-Al5FeSi phases of ADC12 as-cast alloys were studied by optical microscopy (OM), scanning electron microscopy (SEM) and differential thermal analysis (DTA). The experimental results showed that Sm was an ef...

Non-equilibrium electrochemical metal oxidation is one of the methods to obtain the power-saturated nanosized metal oxides. AC electrochemical separate copper and aluminum oxidation in an aqueous sodium chloride solution is performed. It results in the phase transformations of the obtained coppe...

Electrochemical copper and aluminum oxidation using alternating current of industrial frequency was carried out in an aqueous sodium acetate solution. Simultaneous oxidation of metals accelerates copper oxidation, but does not significantly influence the aluminium oxidation rate. It results in t...

The thermal interaction mechanism between C4F7N (fluorinated nitrile)-N2 gas mixture using as substitute to SF6 with metal was investigated. We found that interaction between C4F7N-N2 and copper leads to surface corrosion or gas decomposition with interface temperature at 120℃-220℃. The oxidat...

In this study we deposited new, ternary thin films of copper aluminum oxide with p-type and n-type behavior using RF magnetron sputtering for use as chemical gas sensors. p-Type materials are known to be good catalysts and can be combined with the well-known n-type materials for chemiresistive s...

A mesoporous, monomodal copper aluminum mixed metal oxide (MMO) (average pore size 9.63 nm, surface area 140 m2/g) synthesized via a modified inverse micelle method, efficiently catalyzes aerobic oxidative coupling of amines to imines. This material exhibits excellent conversion (>99%) and selec...

Investigation of commercially produced hydrolysis salts of aluminum by solid-state 27Al NMR spectroscopy and size-exclusion chromatography (SEC) reveals well-defined and distinct Al environments that can be related to physicochemical properties. 27Al MAS and MQ-MAS NMR spectroscopic data show th...

A small quantity of aluminum chlorohydrate (ACH), the active ingredient in antiperspirants, was labeled with the radioisotope 26Al. This labeled drug will be used in future studies to measure the absorption of aluminum from antiperspirant use. The purpose of this study was to demonstrate that th...