Results 251 to 260 of about 114,453,283 (294)
Some of the next articles are maybe not open access.
In situobservation of the formation of FeSe
Superconductor Science and Technology, 2010The formation of the FeSe compound from a mixture of Fe and Se powders encased in a composite Cu/Nb sheath was studied in situ by means of high-energy synchrotron x-ray diffraction. Tetragonal β-FeSe does not seem to form directly from the starting elements. Instead, a sequence of FeSe2, Fe3Se4 and Fe7Se8 phases formed prior to the main formation stage
Grivel, J. -C. +5 more
openaire +2 more sources
In Situ observations of the gaseous reduction of magnetite
Metallurgical Transactions B, 1990The microstructural changes occurring on the surfaces of magnetite samples during the reduction in H/N gas mixtures have been directly recorded using an optical heating stage technique. At low temperatures, below approximately 910 K, the iron forms a porous morphology and grows in a continuous manner at a rate dependent on the reaction temperature and ...
Matthew, S. P., Hayes, P. C.
openaire +4 more sources
An observation in situ of an auroral pulsation
Journal of Geophysical Research, 1970Auroral pulsation observed by Aerobee rocket instruments and ground multichannel photometer indicating primarily temporal ...
T. D. Parkinson, E. C. Zipf, K. A. Dick
openaire +1 more source
In situ observation of secondary nucleation
Journal of Crystal Growth, 1986Abstract Contact nucleation experiments on the (100) face of KH 2 PO 4 crystals have been performed using an advanced microscopic technique so that the contacting event and the results of the contact- secondary nucleation, disturbance of the step pattern and damage to the mother crystal-could be directly observed.
R. Wissing, M. Elwenspoek, B. Degens
openaire +1 more source
In-Situ Observations of Dislocations in Lithium
Proceedings, annual meeting, Electron Microscopy Society of America, 1980The alkali metals, as a unique class of elements in the periodic table, possess a number of interesting characteristics. Elements such as lithium and sodium are amenable to in situ TEM studies since dislocations can be generated and their motion activated by the thermal stress ...
W. M. Sherry, P. Simmonsberger, F. Prinz
openaire +1 more source
In Situ Observation of Melting and Solidification
MRS Proceedings, 1999AbstractMelting and solidification of metallic materials have been observed directly using an in-situ heating experiment in an electron microscope. In pure Al melting initiates at the surface, while in a eutectic alloy melting initiates preferentially at eutectic interfaces and grain boundaries.
H. Saka +4 more
openaire +1 more source
In-situ observation of colloidal crystallization
Progress in Crystal Growth and Characterization of Materials, 2016Abstract We report contents of colloidal crystallization experiments in ISSCG-16. The participants produce two kinds of colloidal crystals, i.e., close-packed opal type crystals, and non-close-packed charged colloidal crystals. They can observe the crystallization processes by using optical microscopy and reflection spectroscopy.
Junpei Yamanaka +3 more
openaire +1 more source
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1980
Abstract In situ observations are defined as those made at the point where the instrument is located. Since a large variety of techniques have been used for in situ measurements, the general features, capabilities and problems of these techniques are reviewed.
openaire +1 more source
Abstract In situ observations are defined as those made at the point where the instrument is located. Since a large variety of techniques have been used for in situ measurements, the general features, capabilities and problems of these techniques are reviewed.
openaire +1 more source
In-situ observation of ettringite crystals
Journal of Crystal Growth, 2009In-situ observation of growing ettringite crystals in solution has been carried out and the morphology change of ettringite has been investigated under various conditions. In particular, the acceleration behavior of ettringite growth in the presence of calcite, the cause of which is not yet understood, is examined.
Ryuichi Komatsu +3 more
openaire +1 more source
In-situ Observation of Solutions by WetSTEM
Microscopy and Microanalysis, 2012Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.
P. Wandrol, M. Unčovský, T. Vystavěl
openaire +1 more source