Hybrid reactive sputtering of transition metal aluminum oxynitrides

Hardness of the pseudobinary transition metal aluminum nitride (T-Al-N) films is improved with increasing the AlN content as far as the B1structure is maintained. A drastic change in the compositional dependence of the hardness corresponds to the phase change of the pseudobinary nitride from B1(NaCl) to B4(wurtzite) structure. Predicted value of AlN content for the drastic change agrees with the AlN content determined experimentally. Hardness of various T-Al-N films was closely correlated with the bulk modulus calculated from interatomic distance based on the power functional formula. The improvement of hardness is attributed to the inherent increase of bulk modulus due to dissolution of AlN into transition metal nitride.

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Corrosion resistance and microstructure characterization of rare-earth-transition metal–aluminum–magnesium alloys

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2008.12.075 ◽

2009 ◽

Vol 479 (1-2) ◽

pp. 342-347 ◽

Cited By ~ 22

Author(s):

E.P. Banczek ◽

L.M.C. Zarpelon ◽

R.N. Faria ◽

I. Costa

Keyword(s):

Corrosion Resistance ◽

Rare Earth ◽

Transition Metal ◽

Magnesium Alloys ◽

Microstructure Characterization ◽

Metal Aluminum ◽

Aluminum Magnesium Alloys

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Prediction of phase change in pseudobinary transition metal aluminum nitrides by band parameters method

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2004.07.035 ◽

2005 ◽

Vol 193 (1-3) ◽

pp. 185-191 ◽

Cited By ~ 40

Author(s):

Yukio Makino

Keyword(s):

Transition Metal ◽

Phase Change ◽

Aluminum Nitrides ◽

Metal Aluminum

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Nonmetal sublattice population induced defect structure in transition metal aluminum oxynitrides

Applied Physics Letters ◽

10.1063/1.4833835 ◽

2013 ◽

Vol 103 (22) ◽

pp. 221905 ◽

Cited By ~ 17

Author(s):

K. P. Shaha ◽

H. Rueβ ◽

S. Rotert ◽

M. to Baben ◽

D. Music ◽

...

Keyword(s):

Transition Metal ◽

Defect Structure ◽

Metal Aluminum

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Microelectrode Evaluation of Transition Metal‐Aluminum Alloy Electrodepositions in Chloroaluminate Ionic Liquids

Journal of The Electrochemical Society ◽

10.1149/1.1838524 ◽

1998 ◽

Vol 145 (5) ◽

pp. 1598-1607 ◽

Cited By ~ 60

Author(s):

Richard T. Carlin ◽

Hugh C. De Long ◽

Joan Fuller ◽

Paul C. Trulove

Keyword(s):

Aluminum Alloy ◽

Ionic Liquids ◽

Transition Metal ◽

Metal Aluminum

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ChemInform Abstract: NEW CALCIUM-TRANSITION METAL-ALUMINUM COMPOUNDS

Chemischer Informationsdienst ◽

10.1002/chin.198434037 ◽

1984 ◽

Vol 15 (34) ◽

Author(s):

G. CORDIER ◽

E. CZECH ◽

H. OCHMANN ◽

H. SCHAEFER

Keyword(s):

Transition Metal ◽

Metal Aluminum ◽

Aluminum Compounds

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On new ternary equiatomic scandium transition metal aluminum compounds ScTAl with T = Cr, Ru, Ag, Re, Pt, and Au

Zeitschrift für Naturforschung B ◽

10.1515/znb-2016-0044 ◽

2016 ◽

Vol 71 (5) ◽

pp. 553-566 ◽

Cited By ~ 7

Author(s):

Mathis Radzieowski ◽

Christopher Benndorf ◽

Sandra Haverkamp ◽

Hellmut Eckert ◽

Oliver Janka

Keyword(s):

Transition Metal ◽

Single Crystal ◽

Structural Features ◽

Magic Angle Spinning ◽

Magic Angle ◽

X Ray ◽

Metal Aluminum ◽

Aluminum Compounds ◽

Angle Spinning ◽

Metal Aluminides

AbstractThe new equiatomic scandium transition metal aluminides ScTAl for T = Cr, Ru, Ag, Re, Pt, and Au were obtained by arc-melting of the elements followed by subsequent annealing for crystal growth. The samples were studied by powder and single crystal X-ray diffraction. The structures of three compounds were refined from single crystal X-ray diffractometer data: ScCrAl, MgZn2 type, P63/mmc, a = 525.77(3), c = 858.68(5) pm, R1 = 0.0188, wR2 = 0.0485, 204 F2 values, 13 variables, ScPtAl, TiNiSi type, Pnma, a = 642.83(4), b = 428.96(2), c = 754.54(5) pm, R1 = 0.0326, wR2 = 0.0458, 448 F2 values, 20 variables and ScAuAl, HfRhSn type, P6̅2c, a = 722.88(4), c = 724.15(4) pm, R1 = 0.0316, wR2 = 0.0653, 512 F2 values, 18 variables. Phase pure samples of all compounds were furthermore investigated by magnetic susceptibility measurements, and Pauli-paramagnetism but no superconductivity was observed down to 2.1 K for all of them. The local structural features and disordering phenomena have been characterized by 27Al and 45Sc magic angle spinning (MAS) and static NMR spectroscopic investigations.

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Transition Metal Aluminum Boride as a New Candidate for Ambient-Condition Electrochemical Ammonia Synthesis

Nano-Micro Letters ◽

10.1007/s40820-020-0400-z ◽

2020 ◽

Vol 12 (1) ◽

Cited By ~ 10

Author(s):

Yang Fu ◽

Peter Richardson ◽

Kangkang Li ◽

Hai Yu ◽

Bing Yu ◽

...

Keyword(s):

Transition Metal ◽

High Energy ◽

Reduction Reaction ◽

Alkaline Media ◽

Applied Potential ◽

Ambient Conditions ◽

Hydrogen Electrode ◽

Faradaic Efficiency ◽

Aluminum Boride ◽

Metal Aluminum

AbstractAchieving more meaningful N2 conversion by reducing the energy input and carbon footprint is now being investigated through a method of N2 fixation instead of the Haber–Bosch process. Unfortunately, the electrochemical N2 reduction reaction (NRR) method as a rising approach currently still shows low selectivity (Faradaic efficiency < 10%) and high-energy consumption [applied potential at least − 0.2 V versus the reversible hydrogen electrode (RHE)]. Here, the role of molybdenum aluminum boride single crystals, belonging to a family of ternary transition metal aluminum borides known as MAB phases, is reported for the electrochemical NRR for the first time, at a low applied potential (− 0.05 V versus RHE) under ambient conditions and in alkaline media. Due to the unique nano-laminated crystal structure of the MAB phase, these inexpensive materials have been found to exhibit excellent electrocatalytic performances (NH3 yield: 9.2 µg h−1 cm−2 mg cat. −1 , Faradaic efficiency: 30.1%) at the low overpotential, and to display a high chemical stability and sustained catalytic performance. In conjunction, further mechanism studies indicate B and Al as main-group metals show a highly selective affinity to N2 due to the strong interaction between the B 2p/Al 3p band and the N 2p orbitals, while Mo exhibits specific catalytic activity toward the subsequent reduction reaction. Overall, the MAB-phase catalyst under the synergy of the elements within ternary compound can suppress the hydrogen evolution reaction and achieve enhanced NRR performance. The significance of this work is to provide a promising candidate in the future synthesis of ammonia.

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