Structural characterization of semi-heusler/light metal composites prepared by spark plasma sintering

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10389233" target="_blank" >RIV/00216208:11320/18:10389233 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/18:00501168 RIV/61389021:_____/18:00501168 RIV/61389005:_____/18:00501168 RIV/61388998:_____/18:00501168

Výsledek na webu

<a href="https://doi.org/10.1038/s41598-018-29479-3" target="_blank" >https://doi.org/10.1038/s41598-018-29479-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41598-018-29479-3" target="_blank" >10.1038/s41598-018-29479-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Structural characterization of semi-heusler/light metal composites prepared by spark plasma sintering

Popis výsledku v původním jazyce

A composite of powders of semi-Heusler ferromagnetic shape memory and pure titanium was successfully prepared by spark plasma sintering at the temperature of 950 degrees C. Sintering resulted in the formation of small precipitates and intermetallic phases at the heterogeneous interfaces. Various complementary experimental methods were used to fully characterize the microstructure. Imaging methods including transmission and scanning electron microscopy with energy dispersive X-ray spectroscopy revealed a position and chemical composition of individual intermetallic phases and precipitates. The crystalline structure of the phases was examined by a joint refinement of X-ray and neutron diffraction patterns. It was found that Co38Ni33Al29 decomposes into the B2-(Co, Ni)Al matrix and A1-(Co, Ni, Al) particles during sintering, while Al, Co and Ni diffuse into Ti forming an eutectic two phase structure with C9-Ti-2(Co, Ni) precipitates. Complicated interface intermetallic structure containing C9-Ti-2(Co, Ni), B2-(Co, Ni) Ti and L2(1)-(Co, Ni)(Al, Ti) was completely revealed. In addition, C9-Ti-2(Co, Ni) and A1-(Co, Ni, Al) precipitates were investigated by an advanced method of small angle neutron scattering. This study proves that powder metallurgy followed by spark plasma sintering is an appropriate technique to prepare bulk composites from very dissimilar materials.

Název v anglickém jazyce

Structural characterization of semi-heusler/light metal composites prepared by spark plasma sintering

Popis výsledku anglicky

A composite of powders of semi-Heusler ferromagnetic shape memory and pure titanium was successfully prepared by spark plasma sintering at the temperature of 950 degrees C. Sintering resulted in the formation of small precipitates and intermetallic phases at the heterogeneous interfaces. Various complementary experimental methods were used to fully characterize the microstructure. Imaging methods including transmission and scanning electron microscopy with energy dispersive X-ray spectroscopy revealed a position and chemical composition of individual intermetallic phases and precipitates. The crystalline structure of the phases was examined by a joint refinement of X-ray and neutron diffraction patterns. It was found that Co38Ni33Al29 decomposes into the B2-(Co, Ni)Al matrix and A1-(Co, Ni, Al) particles during sintering, while Al, Co and Ni diffuse into Ti forming an eutectic two phase structure with C9-Ti-2(Co, Ni) precipitates. Complicated interface intermetallic structure containing C9-Ti-2(Co, Ni), B2-(Co, Ni) Ti and L2(1)-(Co, Ni)(Al, Ti) was completely revealed. In addition, C9-Ti-2(Co, Ni) and A1-(Co, Ni, Al) precipitates were investigated by an advanced method of small angle neutron scattering. This study proves that powder metallurgy followed by spark plasma sintering is an appropriate technique to prepare bulk composites from very dissimilar materials.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Scientific Reports

ISSN

2045-2322

e-ISSN

—

Svazek periodika

8

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

—

Kód UT WoS článku

000439550200005

EID výsledku v databázi Scopus

2-s2.0-85050639948