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	Utilization of plasma spraying for production of nanocrystalline ceramic materials Chráska, Tomáš The technique of plasma spraying is now being investigated as an apt candidate for production of nanocrystalline materials.In the conventional plasma spraying (PS) process,powder particles injected into a high temperature plasma jet are quickly melted and propelled onto a substrate where they spread upon impact and rapidly solidify.Due to the rapid solidification, the conventional PS. Úplný záznam
	PALS - status a vybrané výsledky Ullschmied, Jiří Terawattový jodový laserový system PALS již třetím rokem úspěšně slouží badatelům z domova i ze zahraničí a stal se tak významnou součástí sít velkých evropských laserů.Přehled shrnuje výzkumné aktivity PALSu v období 2000-2002,popisuje současně technické možnosti zařízení i perspektivy jeho dalšího vývoje. Úplný záznam
	Příprava nanometrického práškového karbidu wolframu Dufek, V. ; Brožek, Vlastimil ; Janča, J. Úplný záznam
	Preparation and Properties of Spheroised Tungsten Powder Brožek, V. ; Dufek, V. ; Neufuss, Karel ; Šarman, L. In our series of experiments ball shaped tungsten particles were prepared.Tungsten microballs can be used in filters for chemical and metallurgical industry.Possible applications can be awaited in nuclear fusion reactors.Tungsten balls are tested also as special type of ammunition.Coarse tungsten powder of OSRAM Sylvania Inc provenience was screened into fractions 40-60ćm, 60-100ćm. Úplný záznam
	Study of the Phase Transfer in Titanium-Skandium Alloys Brožek, V. ; Dufek, V. ; Rohan, Pavel ; Ettmayer, P. The contribution describes the attempt to use the dilatometric method for determination of phase transformation in titanium alloys with 5wt% and 15wt% of scandium.Arc melting Ti-Sc alloys, rolling of obtained ingots and their adjustment to test probes.The dilatometric measurements proceeded to temperature 1200Cbecause even most pure accessible argon atmosphere did not prevent from. Úplný záznam
	Desing of laser-triggered spark gap Frolov, Oleksandr ; Koláček, Karel ; Schmidt, Jiří ; Boháček, Vladislav ; Prukner, Václav ; Řípa, Milan Triggered spark gaps are very popular as fast high current switches.With proper desing, a triggered spark gap can switch megawatts of prower in few nanoseconds,with jitters,of les than a nanosecond.These devices make use of the very low impendance of an arc once the arc is estabilished.Two electrodes are separated by sufficient distance that the gap doesn't spontaneously breakdown. Úplný záznam
	Mechanical Properties of Plasma Sprayed Coatings at Low and High Deformations Nohava, Jiří Ceramic or metal coatings deposited by plasma spraying consist of thin splats and porosity between 2 and 15%.The structure is one of the main factors, controlling mechanical properties of the coating.Sprayed materials are know to be elastically anisotropic and having Young's moduli at small deformations much smaller than those of sintered materials.The typical splat and porosity. Úplný záznam
	Wear Mechanism of Al2O3 Coatings Deposited by Water-Stabilized Plasma Spraying Nohava, Jiří ; Siegl, J. Plasma sprayed Al2O3 and Cr2O3 are known their superior wear resistance.A proper understanding of the wear mechanisms is essential to achieve the highest wear resistance.In our recent work, the influence of WSPr water-stabilized plasma torch on the wear properties of Al2O3 and Cr2O3 coatings was studied. The results of wear tests on ceramic coatings were compared with wear test results. Úplný záznam
	Use of image-processing toolbox for powder particle diagnostics in plasma spray process Chumak, Oleksiy ; Kopecký, Vladimír For measurement of distribution of powder particles and their velocities on plasma spraying, imagigng by CCD camera is used.It is difficult to identify the particles injected into plasma jet on photos, because of high brightness of background light source, noises of CCD camera and low contrast of particle images.Filtering of the photos by a function of two-dimensional convolution. Úplný záznam
	Electron Backscattering Diffraction Analysis of Secondary Crack Propagation in Low-Alloy Bainitic Steel Nohava, Jiří ; Haušild, P. ; Bompard, P. Electron Backscattering Diffraction (EBSD) allows to generate crystallographic date in a microstructural framework and to analyze crystallographic orientation distribution in thesample.The review deals with application of EBSD for analysis of secondary cleavage crack in low-alloy bainitic steel.Material analyzed was A 508 C1.3 low-alloy bainitic steel, which is used for construction. Úplný záznam

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