Linss, V. Chudoba, T.
Published in
International Journal of Materials Research
The comprehensive mechanical characterisation of thin films and surfaces is very important for a suitable optimisation of protection layers and layer systems. The Young’s modulus and the yield strength are widely accepted material parameters which can be determined by spherical nanoindentation in normal direction. This article reports on the determ...
Denkiewicz, D. Landis, S. Ratajczyk, L. Rymuza, Z.
Published in
International Journal of Materials Research
We tested the nanomechanical properties of various materials (Si, SiO2, Si3N4, AlCu, TiN) for the design of stamps used in nanoimprint lithography. Nanoindentation was used on both insulated and non-insulated areas. The test enabled an estimation of the nanohardness and Young’s modulus of the tested materials (films). The results are very useful fo...
Barnoush, Afrooz Vehoff, Horst
Published in
International Journal of Materials Research
The hydrogen effect on dislocation nucleation in Ni single crystals with (111) surface orientation has been examined with the aid of a specifically designed nanoindentation setup for in situ electrochemical experiments. The effect of the electrochemical potential on the indent load – displacement curve, especially the unstable elastic-plastic trans...
Lucca, D. A. Herrmann, K. Klopfstein, M. J. Menelao, F.
Published in
International Journal of Materials Research
We report on an investigation of the suitability of SiO2 thin films for use as calibration standards for the measurement of elastic modulus by laser-acoustic measuring devices. Film thicknesses for a range of thin film standards, originally developed for the calibration of ellipsometers, were obtained by X-ray reflectometry, ellipsometry, and metro...
Rao, Muktinutalapati Nageswara
Published in
International Journal of Materials Research
Maraging steels based on iron –nickel martensite constitute a very important family of high-strength steels, which distinguishes itself by demonstrating an unparalleled combination of excellent fabricability and high strength and fracture toughness after heat treatment. Heat treatment of these steels has now been perfected to ensure consistently hi...
Jendrzejczyk, Dominika Gierlotka, Wojciech Fitzner, Krzysztof
Published in
International Journal of Materials Research
The thermodynamic properties of liquid Ag–Sb –In alloys were determined using solid oxide galvanic cells with zirconia electrolyte. The following galvanic cells were employed: in the temperature range from 973 to 1200 K. (I) Re+ kanthal, Agx−Iny−Sb(1−x−y),In2O3//ZrO2+Y2O3//NiO,Ni,Pt $$\begin{array}{l}\mathrm{Re}+\text { kanthal, } \mathrm{Ag}_{x}-\...
Largeau, Ludovic Patriarche, Gilles Le Bourhis, Eric Rivière, Jean-Pierre
Published in
International Journal of Materials Research
(011) thin films of GaAs and InP (220 and 250 μm thick, respectively) were deformed by a Vickers indenter at elevated temperatures (350 – 400 °C) under loads in the range 0.4 – 2.9 N. For loads higher than 1.9 N, symmetric punching through InP was detected at the opposite face while it was asymmetric through GaAs. In InP, when the punching mechanis...
Eumann, Markus Sauthoff, Gerhard Palm, Martin
Published in
International Journal of Materials Research
Phase equilibria and homogeneity ranges of the intermetallic phases in the Al –Mo system have been determined. The microstructures of samples of fixed composition and of diffusion couples were investigated by light-optical and scanning electron microscopy, the crystallographic structures and lattice constants were established by X-ray diffraction a...
Qiu, Caian Opalka, Susanne M. Olson, Gregory B. Anton, Donald L.
Published in
International Journal of Materials Research
The thermodynamic properties of the Al –Na and Na–Al – H systems have been assessed by combining the “calculation of phase diagram” approach with first-principles predictions. The Gibbs energies of the individual phases were thermodynamically modeled, where the model parameters were obtained from best fit optimizations to combined experimental and ...
Arita, Minoru
Published in
International Journal of Materials Research
Published measurements of the diatomic sulfur fugacity were used to make a thermodynamic analysis of high-temperature cuprous sulfide between 789 K and 1321 K. Gibbs–Duhem integration of the fugacity data was used to determine the enthalpy of formation of stoichiometric Cu2S as – 123.8 kJ mol–1. Statistical thermodynamics was applied to find partit...