The influence of substrate temperature and spraying distance on the properties of plasma sprayed tungsten and steel coatings deposited in a shrouding chamber

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F17%3A00476705" target="_blank" >RIV/61389021:_____/17:00476705 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081723:_____/17:00476705 RIV/68407700:21340/17:00314495

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.surfcoat.2016.10.055" target="_blank" >http://dx.doi.org/10.1016/j.surfcoat.2016.10.055</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.surfcoat.2016.10.055" target="_blank" >10.1016/j.surfcoat.2016.10.055</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The influence of substrate temperature and spraying distance on the properties of plasma sprayed tungsten and steel coatings deposited in a shrouding chamber

Popis výsledku v původním jazyce

Plasma spraying is among the alternative technologies for manufacturing tungsten-based coatings or graded interlayers for plasma facing components of fusion devices. The main limitation lies in the relatively low thermal conductivity, stemming from the anisotropic porosity and imperfect bonding between the splats. For several materials, it has been shown that increased substrate temperature leads to improved intersplat bonding and increased coating density. However, spraying of metals at elevated temperatures in ambient atmosphere is accompanied by enhanced oxidation.nThis work is focused on the effects of substrate temperature on the properties of plasma sprayed tungsten and steel coatings. A range of substrate temperatures was achieved by varying the preheating temperature, pauses between torch passes, spraying distance and intensity of cooling. To suppress oxidation, the substrates were placed in a special shrouding chamber flushed with argon-hydrogen mixture. The coatings were characterized for their structure, porosity, hardness, thermal conductivity and oxygen content. A marked improvement of these properties with substrate temperature was observed and correlated to the spraying parameters.

Název v anglickém jazyce

The influence of substrate temperature and spraying distance on the properties of plasma sprayed tungsten and steel coatings deposited in a shrouding chamber

Popis výsledku anglicky

Plasma spraying is among the alternative technologies for manufacturing tungsten-based coatings or graded interlayers for plasma facing components of fusion devices. The main limitation lies in the relatively low thermal conductivity, stemming from the anisotropic porosity and imperfect bonding between the splats. For several materials, it has been shown that increased substrate temperature leads to improved intersplat bonding and increased coating density. However, spraying of metals at elevated temperatures in ambient atmosphere is accompanied by enhanced oxidation.nThis work is focused on the effects of substrate temperature on the properties of plasma sprayed tungsten and steel coatings. A range of substrate temperatures was achieved by varying the preheating temperature, pauses between torch passes, spraying distance and intensity of cooling. To suppress oxidation, the substrates were placed in a special shrouding chamber flushed with argon-hydrogen mixture. The coatings were characterized for their structure, porosity, hardness, thermal conductivity and oxygen content. A marked improvement of these properties with substrate temperature was observed and correlated to the spraying parameters.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20506 - Coating and films

Projekt

<a href="/cs/project/GB14-36566G" target="_blank" >GB14-36566G: Multidisciplinární výzkumné centrum moderních materiálů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Surface and Coatings Technology

ISSN

0257-8972

e-ISSN

—

Svazek periodika

318

Číslo periodika v rámci svazku

May

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

7

Strana od-do

217-223

Kód UT WoS článku

000402356100025

EID výsledku v databázi Scopus

2-s2.0-85006010338