Changes in Structure and Corrosion Resistance of Cryogenically Treated WC-Co Cemented Carbides

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F21%3A43964209" target="_blank" >RIV/49777513:23210/21:43964209 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/49777513:23640/21:43964209

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.1088/1757-899X/1193/1/012013/pdf" target="_blank" >https://iopscience.iop.org/article/10.1088/1757-899X/1193/1/012013/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/1193/1/012013" target="_blank" >10.1088/1757-899X/1193/1/012013</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Changes in Structure and Corrosion Resistance of Cryogenically Treated WC-Co Cemented Carbides

Popis výsledku v původním jazyce

Deep cryogenic treatment (DCT) of WC-Co cemented carbides (CC) was experimentally explored. Four types of cemented carbides were studied. They had different WC grain sizes and the volume fractions of the cobalt binder. Some specimens were deep-cryogenic-treated (DCT) at -186°C in dry vapour of liquid nitrogen. Another group of specimens was tempered at 450°C. The corrosion resistance of treated specimens was then determined by potentiodynamic testing in artificial mine water. Microstructural changes were characterized with the aid of X-ray diffraction analysis. DCT-treated specimens showed a higher corrosion resistance than the untreated ones and than those which were only tempered. X-ray diffraction analysis revealed that DCT changed the ratio of ε-Co and α-Co phases. The extent of these transformations was dictated by the carbide phase grain size and by the volume fraction of cobalt.

Název v anglickém jazyce

Changes in Structure and Corrosion Resistance of Cryogenically Treated WC-Co Cemented Carbides

Popis výsledku anglicky

Deep cryogenic treatment (DCT) of WC-Co cemented carbides (CC) was experimentally explored. Four types of cemented carbides were studied. They had different WC grain sizes and the volume fractions of the cobalt binder. Some specimens were deep-cryogenic-treated (DCT) at -186°C in dry vapour of liquid nitrogen. Another group of specimens was tempered at 450°C. The corrosion resistance of treated specimens was then determined by potentiodynamic testing in artificial mine water. Microstructural changes were characterized with the aid of X-ray diffraction analysis. DCT-treated specimens showed a higher corrosion resistance than the untreated ones and than those which were only tempered. X-ray diffraction analysis revealed that DCT changed the ratio of ε-Co and α-Co phases. The extent of these transformations was dictated by the carbide phase grain size and by the volume fraction of cobalt.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/EF15_003%2F0000358" target="_blank" >EF15_003/0000358: Výpočetní a experimentální design pokročilých materiálů s novými funkcionalitami</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>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 statě ve sborníku

9th Manufacturing Engineering Society International Conference (MESIC 2021)

ISBN

—

ISSN

1757-8981

e-ISSN

1757-899X

Počet stran výsledku

8

Strana od-do

—

Název nakladatele

IOP Publishing LTD

Místo vydání

Bristol

Místo konání akce

Gijón

Datum konání akce

23. 6. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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