Degradation of Sintered Carbides in Different Corrosive Environments

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F19%3A43957652" target="_blank" >RIV/49777513:23210/19:43957652 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.daaam.info/Downloads/Pdfs/proceedings/proceedings_2019/089.pdf" target="_blank" >https://www.daaam.info/Downloads/Pdfs/proceedings/proceedings_2019/089.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2507/30th.daaam.proceedings.089" target="_blank" >10.2507/30th.daaam.proceedings.089</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Degradation of Sintered Carbides in Different Corrosive Environments

Popis výsledku v původním jazyce

The aim of the study was to determine the corrosion resistance of different types of sintered carbides in alkaline and acidic environments. The degradation environment for sintered carbides was chosen so that its pH corresponds to those with which these carbides normally come into contact during their use as machining tools or drilling tools used in the extractive industry. The experimental material was selected from sintered carbides based on WC-Co and WC-Ni. The materials chosen differed in the contents of the binder and the grain size of the WC. Three alkaline media and three acidic media were selected as the degradation media, with pH values of 0, 2, 7 and 12, in which the rate at which dissolution of the cemented carbide was observed. In addition to determining the solubility rate of the binder, the corrosion resistance of sintered carbides was evaluated using a potentiostat and the binder fraction in the solvents using atomic absorption spectrometry. The experiments showed, for example, that the highest amount of binder in sintered carbides with a cobalt binder was dissolved in solutions with high sulphuric acid content. In contrast with the solution of NaOH or CH3COOH.

Název v anglickém jazyce

Degradation of Sintered Carbides in Different Corrosive Environments

Popis výsledku anglicky

The aim of the study was to determine the corrosion resistance of different types of sintered carbides in alkaline and acidic environments. The degradation environment for sintered carbides was chosen so that its pH corresponds to those with which these carbides normally come into contact during their use as machining tools or drilling tools used in the extractive industry. The experimental material was selected from sintered carbides based on WC-Co and WC-Ni. The materials chosen differed in the contents of the binder and the grain size of the WC. Three alkaline media and three acidic media were selected as the degradation media, with pH values of 0, 2, 7 and 12, in which the rate at which dissolution of the cemented carbide was observed. In addition to determining the solubility rate of the binder, the corrosion resistance of sintered carbides was evaluated using a potentiostat and the binder fraction in the solvents using atomic absorption spectrometry. The experiments showed, for example, that the highest amount of binder in sintered carbides with a cobalt binder was dissolved in solutions with high sulphuric acid content. In contrast with the solution of NaOH or CH3COOH.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 30th International DAAAM Symposium &quot;Intelligent Manufacturing &amp; Automation&quot;

ISBN

978-3-902734-22-8

ISSN

1726-9679

e-ISSN

—

Počet stran výsledku

8

Strana od-do

0646-0653

Název nakladatele

DAAAM International Vienna

Místo vydání

Vídeň

Místo konání akce

Zadar

Datum konání akce

23. 10. 2019

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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