Comparison of metallography and mechanical properties of samples printed from WC-Co powder mix using SLM technology in protective atmospheres of argon and nitrogen

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F18%3A43951757" target="_blank" >RIV/49777513:23210/18:43951757 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of metallography and mechanical properties of samples printed from WC-Co powder mix using SLM technology in protective atmospheres of argon and nitrogen

Popis výsledku v původním jazyce

The aim of this study was to compare the properties of samples made from WC-Co powder mixture, printed in two different protective atmospheres, namely nitrogen and argon. An optical and a scanning electron microscope which enables elemental analysis by EDX were used to evaluated the properties of the printed samples. This was further supplement by analysis of phase composition using X-ray diffraction and of mechanical properties, namely a compression strength test and the Vickers hardness test. Based on a comparision of the results, it was possible to state that the mechanical properties and structure of the samples printed in the protective atmosphere of nitrogen do not differ significantily from the samples printed in the protective atmosphere of argon. Most of the pores that occured in the structure of the samples were related to the residual moisture of the powder mixture and its other properties. Analysis of the phase composition by X-ray diffraction showed no interaction of nitrogen with the sintered material. Further follow up experiments will search for a suitable WC-Co powder mix for SLM technology. The studies will deal with treatments and processing of the powder mix to create a homogenous body with minimal internal porosity.

Název v anglickém jazyce

Comparison of metallography and mechanical properties of samples printed from WC-Co powder mix using SLM technology in protective atmospheres of argon and nitrogen

Popis výsledku anglicky

The aim of this study was to compare the properties of samples made from WC-Co powder mixture, printed in two different protective atmospheres, namely nitrogen and argon. An optical and a scanning electron microscope which enables elemental analysis by EDX were used to evaluated the properties of the printed samples. This was further supplement by analysis of phase composition using X-ray diffraction and of mechanical properties, namely a compression strength test and the Vickers hardness test. Based on a comparision of the results, it was possible to state that the mechanical properties and structure of the samples printed in the protective atmosphere of nitrogen do not differ significantily from the samples printed in the protective atmosphere of argon. Most of the pores that occured in the structure of the samples were related to the residual moisture of the powder mixture and its other properties. Analysis of the phase composition by X-ray diffraction showed no interaction of nitrogen with the sintered material. Further follow up experiments will search for a suitable WC-Co powder mix for SLM technology. The studies will deal with treatments and processing of the powder mix to create a homogenous body with minimal internal porosity.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Journal of International Scientific Publications

ISSN

1314-7269

e-ISSN

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Svazek periodika

12

Číslo periodika v rámci svazku

2018

Stát vydavatele periodika

BG - Bulharská republika

Počet stran výsledku

9

Strana od-do

326-334

Kód UT WoS článku

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EID výsledku v databázi Scopus

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