Dynamics Analysis of Microparticles Cavitation Disintegration During Nanopowder Preparation in New Water Jet Mill (WJM)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F11%3A86078722" target="_blank" >RIV/61989100:27230/11:86078722 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27350/11:86078722

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Dynamics Analysis of Microparticles Cavitation Disintegration During Nanopowder Preparation in New Water Jet Mill (WJM)

Popis výsledku v původním jazyce

A physical analysis of cavitation-based implosive breakage of solid particles focusing on practical application during fine particle disintegration in a liquid suspension is submitted in the present paper. The physical source of the cavitation dynamics phenomena involved is an extreme velocity gradient induced by an ultrahigh-energy liquid jet mixing together with a slow liquid suspension of milled particles. Extreme tensile stresses occurring at velocity gradients over 1000 ms-1mm-1 at the operating temperature of 65 oC generates high-intensity pure vapor cavitation in the degassed water dispersion with extreme values of impact pressure in the final of bubble implosions on particle surfaces. Preparation of silicon nanoparticles with median diameter approximately 148 nm using a newly developed "Water Jet Mill" (WJM) device is demonstrated in the present article as an example of application of the aforementioned disintegration method as well as of theoretical analysis of this method.

Název v anglickém jazyce

Dynamics Analysis of Microparticles Cavitation Disintegration During Nanopowder Preparation in New Water Jet Mill (WJM)

Popis výsledku anglicky

A physical analysis of cavitation-based implosive breakage of solid particles focusing on practical application during fine particle disintegration in a liquid suspension is submitted in the present paper. The physical source of the cavitation dynamics phenomena involved is an extreme velocity gradient induced by an ultrahigh-energy liquid jet mixing together with a slow liquid suspension of milled particles. Extreme tensile stresses occurring at velocity gradients over 1000 ms-1mm-1 at the operating temperature of 65 oC generates high-intensity pure vapor cavitation in the degassed water dispersion with extreme values of impact pressure in the final of bubble implosions on particle surfaces. Preparation of silicon nanoparticles with median diameter approximately 148 nm using a newly developed "Water Jet Mill" (WJM) device is demonstrated in the present article as an example of application of the aforementioned disintegration method as well as of theoretical analysis of this method.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BK - Mechanika tekutin

OECD FORD obor

—

Projekt

<a href="/cs/project/GA106%2F08%2F1092" target="_blank" >GA106/08/1092: PŘÍPRAVA NANOKOMPOZITNÍCH MATERIÁLŮ V PROUDĚNÍ S EXTRÉMNÍ DYNAMIKOU</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Advanced Powder Technology

ISSN

0921-8831

e-ISSN

—

Svazek periodika

22

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

639-643

Kód UT WoS článku

000295603800015

EID výsledku v databázi Scopus

—