Corrosion of ceramic silicon carbide in hydrofluoric acid

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F21%3A00544788" target="_blank" >RIV/61389021:_____/21:00544788 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/21:43923333 RIV/68407700:21610/21:00350919

Výsledek na webu

<a href="https://www.irsm.cas.cz/materialy/cs_content/2021_doi/Brozek_CS_2021_0015.pdf" target="_blank" >https://www.irsm.cas.cz/materialy/cs_content/2021_doi/Brozek_CS_2021_0015.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13168/cs.2021.0015" target="_blank" >10.13168/cs.2021.0015</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Corrosion of ceramic silicon carbide in hydrofluoric acid

Popis výsledku v původním jazyce

Silicon carbide usable in mechanical or electrical engineering is produced in various purity grades and exhibits a large number of crystal structure variants. As for use in the chemical field, it is commonly stated that it is highly resistant in acid media but not suitable for use in alkaline media. This paper discusses the resistance of compact silicon carbide to hydrofluoric acid. The compact silicon carbide has been prepared by sintering using the SSiC method with or without binders based on scandium oxide Sc2O3 and calcium fluoride CaF2. The purest silicon carbide sample of cubic 3C structure sintered without a binder was almost insoluble in hydrofluoric acid. It has been shown, however, that pure silicon carbide is perfectly insoluble in hydrofluoric acid irrespective of the structure variants detected in the samples (3C, 4H, 6H, 15R). The corrosion stability of the compact ceramics is affected by the residual SiO2 content (together with other impurities) in imperfect SiC preparations, and it is influenced by the choice and chemical properties of the chosen ceramic binder as well.

Název v anglickém jazyce

Corrosion of ceramic silicon carbide in hydrofluoric acid

Popis výsledku anglicky

Silicon carbide usable in mechanical or electrical engineering is produced in various purity grades and exhibits a large number of crystal structure variants. As for use in the chemical field, it is commonly stated that it is highly resistant in acid media but not suitable for use in alkaline media. This paper discusses the resistance of compact silicon carbide to hydrofluoric acid. The compact silicon carbide has been prepared by sintering using the SSiC method with or without binders based on scandium oxide Sc2O3 and calcium fluoride CaF2. The purest silicon carbide sample of cubic 3C structure sintered without a binder was almost insoluble in hydrofluoric acid. It has been shown, however, that pure silicon carbide is perfectly insoluble in hydrofluoric acid irrespective of the structure variants detected in the samples (3C, 4H, 6H, 15R). The corrosion stability of the compact ceramics is affected by the residual SiO2 content (together with other impurities) in imperfect SiC preparations, and it is influenced by the choice and chemical properties of the chosen ceramic binder as well.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GC17-10246J" target="_blank" >GC17-10246J: Rozklad perfluorovaných sloučenin a fluorovaných látek ztenčujících ozónovou vrstvu v proudu termického plazmatu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Ceramics - Silikáty

ISSN

0862-5468

e-ISSN

1804-5847

Svazek periodika

65

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

12

Strana od-do

158-169

Kód UT WoS článku

000681448700007

EID výsledku v databázi Scopus

2-s2.0-85111657999