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| Description
| - A Ni-Al pseudo-alloy powder was studied from the point of view of spheroidization during spraying by a water-stabilized plasma gun. The powder particles of irregular shape were conglomerates of elemental Ni and Al, the average Al content being 9.7 %. To conserve the shape and composition of particles flying in the plasma stream, these were trapped in liquid nitrogen. Scanning electron microscopy and X-ray microanalysis were used to obtain information about particle shape and element distribution. Most plasma sprayed particles trapped in liquid nitrogen were composed of a Ni-Al alloy, where the Al content varied in a wide range. Spherical %22caps%22 composed of Al-oxide covered partially their surfaces. It follows that on the interface between molten Ni and Al, the interaction of both components gave rise to a Ni-Al alloy. On the contrary, if Al was exposed to air, it oxidized rapidly during the flight of the particles.
- A Ni-Al pseudo-alloy powder was studied from the point of view of spheroidization during spraying by a water-stabilized plasma gun. The powder particles of irregular shape were conglomerates of elemental Ni and Al, the average Al content being 9.7 %. To conserve the shape and composition of particles flying in the plasma stream, these were trapped in liquid nitrogen. Scanning electron microscopy and X-ray microanalysis were used to obtain information about particle shape and element distribution. Most plasma sprayed particles trapped in liquid nitrogen were composed of a Ni-Al alloy, where the Al content varied in a wide range. Spherical %22caps%22 composed of Al-oxide covered partially their surfaces. It follows that on the interface between molten Ni and Al, the interaction of both components gave rise to a Ni-Al alloy. On the contrary, if Al was exposed to air, it oxidized rapidly during the flight of the particles. (en)
- Byla sledována sféroidizace částic prášku pseudoslitiny Ni-Al při plazmovém stříkání. Střední množství Al bylo 9,7%. Částice pseudoslitiny obsahovaly oblasti složené z téměř čistých prvků Ni a Al. Experimentální výsledky ukazují, že jsou-li Ni a Al v kontaktu, mají za letu v proudu plazmatu tendenci vytvořit taveninu Ni-Al, ze které po ztuhnutí vznikne tuhý roztok Al v Ni v širokém rozsahu koncentrací Al.. Je-li však Al v bezprostředním styku s plazmatem, které po roztavení částic je už silně obohaceno vzdušným kyslíkem, tavenina Al oxiduje na taveninu Al2O3. Vzhledem k rozdílné hustotě tavenin slitiny a oxidu je při brzdění částic transportována tavenina oxidu po povrchu kapky taveniny slitiny k zadní části letící kapky a po ztuhnutí vytvoří přibližně kulový vrchlík o menším poloměru na povrchu větší kulovité částice slitiny Ni-Al. Sféroidizace pseudoslitiny Ni-Al tedy při plazmovém stříkání neznamená zároveň homogenizaci chemického složení. (cs)
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| Title
| - In-flight behavior of Ni-Al powder during its plasma spraying
- In-flight behavior of Ni-Al powder during its plasma spraying (en)
- Chování prášku Ni-Al za letu při jeho plazmovém stříkání (cs)
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| skos:prefLabel
| - In-flight behavior of Ni-Al powder during its plasma spraying
- In-flight behavior of Ni-Al powder during its plasma spraying (en)
- Chování prášku Ni-Al za letu při jeho plazmovém stříkání (cs)
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| skos:notation
| - RIV/61389021:_____/05:00027500!RIV06-AV0-61389021
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/61389021:_____/05:00027500
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Ni-Al powder; plasma spraying; Al oxidation; spherical alloy particles; Al2O3 caps (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - Proceedings of International Thermal Spray Conference 2005
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Kolman, Blahoslav Jan
- Chráska, Pavel
- Dubský, Jiří
- Voleník, Karel
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
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| http://linked.open...n/vavai/riv/zamer
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
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| https://schema.org/isbn
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| is http://linked.open...avai/riv/vysledek
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