Long term tensile creep studies were conducted on binary NiAl in the temperature range 700-1200 K with the objectives of characterizing and understanding the creep mechanisms. Inverse and normal primary creep curves were observed depending on stress and temperature. It is concluded that the primary creep of NiAl is limited by dislocation mobility. The stress exponent for creep, n, decreased fro...

The least computational expensive Hamiltonian (methods) and wavefunction (basis sets) for diatomic nickel-aluminum (NiAl), was calculated, along with the ground state, bond length, frequency, and binding energy. Researchers believe nickel-aluminum can be used in high performance turbine jet engines, in place of aluminum-coated nickel. The effects of basis functions under increasing levels of th...

CO selective methanation (CO-SMET) is a promising method for deep removal from H2-rich gases. In this study, series of RuNi/MMO catalysts are prepared using the support MMO-N derived NiAl-NO3-LDHs, which was NiAl-CO3-LDHs via an acid–alcohol ion-exchange reaction. The were characterized by XRD, SEM, TEM, XPS, H2-TPR, CO-TPD, CO2-TPD, NH3-TPD, and TG. RuNi/MMO-N catalyst demonstrated excellent C...

We provide a comparative first-principles investigation of the structural, electronic, vibrational, and thermodynamic properties full Heusler compounds, cubic Fe 2 NiAl, tetragonally distorted Co NiAl. In both cases, we find inverse structure to be in close competition with layered arrangement e...

NiAl composite coating strengthened by ZrC and ZrB2 phases is synthesized the plasma cladding process. The influence of speed on microstructrue properties coatings studied. main are NiAl, γ-(Fe,Ni), phases. in shape points small blocks, shows long strips needle bar. slower speed, larger size reinforcing With increase wear resistance improves. Coating with 10mm/s has excellent wear-resistance pr...

Abstract To meet the demands of modern vehicles and electronic devices, an increasing number new materials for cathode high-performance supercapacitors have been studied in depth. Here, GO/NA-Cl composites were successfully fabricated by in-situ grow NiAl layered double hydroxide (NiAl LDH) nanosheets on graphene oxide (GO) flakes through one-step hydrothermal procedure supercapacitor. The imag...

The effect of tungsten alloying on the elastic properties B2-NiAl at low-temperature and high-temperature distribution W atoms sublattices. By means exact muffin-tin orbitals method in conjunction with coherent potential approximation, constants C 11 ,C 12 44 , Young's modulus E, shear G, Cauchy pressure values, G/B ratios are calculated. Using phenomenological criteria correlation between duct...

The steady-state creep rate of Ni-base metallic foams, with superalloy composition (in wt. pct) Ni7.8∼9.1Al (relative density, ρ = 2.5-2.6) and Ni-13.5∼16.6Cr-5.1∼8.9Al (ρ = 2.8∼3.0), was measured under a range of temperatures (680∼825°C) and applied stresses (0.1∼0.3 MPa), and compared with that of NiAl intermetallic foams (ρ = 5.3). The stress exponent and activation energy are within the exp...