Effect of Densification on MgB2 Phase Formation in Mg–B Powder/Nb/Cu Cladding Fabricated by Hydrostatic Extrusion

The subject of reactive phase formation in multilayer thin films of varying periodicity has stimulated much research over the past few years. Recent studies have sought to understand the reactions that occur during the annealing of Ni/Al multilayers. Dark field imaging from transmission electron microscopy (TEM) studies in conjunction with in situ x-ray diffraction measurements, and calorimetry experiments (isothermal and constant heating rate), have yielded new insights into the sequence of phases that occur during annealing and the evolution of their microstructure.In this paper we report on reactive phase formation in sputter-deposited lNi:3Al multilayer thin films with a periodicity A (the combined thickness of an aluminum and nickel layer) from 2.5 to 320 nm. A cross-sectional TEM micrograph of an as-deposited film with a periodicity of 10 nm is shown in figure 1. This image shows diffraction contrast from the Ni grains and occasionally from the Al grains in their respective layers.

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In-situ investigation by X-ray diffraction and wafer curvature of phase formation and stress evolution during metal thin film – silicon reactions

Zeitschrift für Kristallographie Supplements ◽

10.1524/zksu.2007.2007.suppl_26.81 ◽

2007 ◽

Vol 2007 (suppl_26) ◽

pp. 81-89

Author(s):

O. Thomas

Keyword(s):

Thin Film ◽

Phase Formation ◽

Stress Evolution ◽

X Ray Diffraction ◽

X Ray ◽

Wafer Curvature ◽

Thin Film Silicon ◽

Metal Thin Film ◽

In Situ Investigation

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Features of phase formation at the interfaces of structural elements in multi-component ceramics based on Ti-Al-C

Functional materials ◽

10.15407/fm26.04.748 ◽

2019 ◽

Vol 26 (3) ◽

Keyword(s):

Phase Formation ◽

Structural Elements

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Effect of hydrostatic extrusion on structural and magnetic properties of polycrystalline Dy

Functional materials ◽

10.15407/fm26.02.233 ◽

2019 ◽

Vol 26 (2) ◽

Keyword(s):

Magnetic Properties ◽

Hydrostatic Extrusion ◽

Structural And Magnetic Properties

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On the trustability of semi-empirical methods to the calculation of gas phase formation enthalpies of inorganic compounds containing heavy metals: tin borates

10.26434/chemrxiv.5393953.v1 ◽

2017 ◽

Author(s):

Robson de Farias

Keyword(s):

Heavy Metals ◽

Gas Phase ◽

Phase Formation ◽

Inorganic Compounds ◽

Formation Enthalpy ◽

Computational Time ◽

Gas Formation ◽

Formation Enthalpies ◽

Knudsen Effusion Mass Spectrometry ◽

Semi Empirical

In the present work, are calculated the gas formation enthalpies (SE; PM3 and PM6) for tin borates: SnB2O4 and Sn2B2O5. The calculated values are compared with experimental ones, obtained by Knudsen effusion mass spectrometry [3]. It is shown that SE methods, besides their lower computational time consuming can, indeed, provide reliable gas phase formation enthalpy values for inorganic compounds containing heavy metals.

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