Publication detail
On the search for producing intermetallics by diffusion reaction of cold spray bulk deposits
JAN, V. ČUPERA, J. ČÍŽEK, J.
Czech title
příprava intermetalik difůzní reakcí z depozitů kinetickám naprašováním
English title
On the search for producing intermetallics by diffusion reaction of cold spray bulk deposits
Type
journal article in Web of Science
Language
en
Original abstract
Bi-metallic mixtures of elemental powders were deposited by cold spray technique in the form of bulk, self-supportive deposits with thickness of about 8 mm. The combinations used were Ti–Al, Fe–Al and Ni–Al in 1:1 at.% composition. Aluminides of titanium, iron and nickel draw substantial attention as materials with high application potential but also substantial production technology complications. Therefore the bi-metallic deposits were subjected to extensive series of annealing experiments in order to assess their behaviour during reaction diffusion synthesis of intermetallic phases. Short annealing for 2 h was used in 4.8 Argon protective atmosphere. Metastable and according to PD stable phases were identified alongside with heterogeneous diffusion artefacts (e.g. porosity). Temperatures ranging from 350 °C to 600 °C were used, which provided both solid-state reactions and diffusion in locally melted aluminium part of the bi-metallic deposit.
Czech abstract
Bi-metalické směsi elementárních prášků byly uloženy za studena stříkací technikou ve formě sypkých, aamo stojících ložisek s tloušťkou 8 mm. Kombinace byly použity Ti-Al, Fe-Al a Ni-Al v poměru 1: 1 v% kompozice.. Aluminidy titanu, železa a niklu čerpat značnou pozornost, protože materiály s vysokým aplikačním potenciálem, ale také značný výrobní technologie komplikací. Proto bi-kovové ložiska byla podrobena rozsáhlým sérii experimentů žíhání za účelem posouzení jejich chování v průběhu reakce difúzní syntézy intermetalických fází. Krátký žíhání po dobu 2 hodin byl použit v ochranné atmosféře argonu 4,8. Metastabilní a podle PD stabilní fáze byly identifikovány spolu s heterogenními difuze artefakty (např pórovitosti). Teplotách v rozmezí od 350 ° C do 600 ° C byly použity, který za předpokladu, a to jak v pevné fázi reakce a šíření v místně roztaveného hliníku části bi-kovového ložiska.
English abstract
Bi-metallic mixtures of elemental powders were deposited by cold spray technique in the form of bulk, self-supportive deposits with thickness of about 8 mm. The combinations used were Ti–Al, Fe–Al and Ni–Al in 1:1 at.% composition. Aluminides of titanium, iron and nickel draw substantial attention as materials with high application potential but also substantial production technology complications. Therefore the bi-metallic deposits were subjected to extensive series of annealing experiments in order to assess their behaviour during reaction diffusion synthesis of intermetallic phases. Short annealing for 2 h was used in 4.8 Argon protective atmosphere. Metastable and according to PD stable phases were identified alongside with heterogeneous diffusion artefacts (e.g. porosity). Temperatures ranging from 350 °C to 600 °C were used, which provided both solid-state reactions and diffusion in locally melted aluminium part of the bi-metallic deposit.
Keywords in English
Cold spray; Reaction diffusion; Intermetallics; Reaction sequence; Bulk deposits
RIV year
2015
Released
25.04.2015
Publisher
Elsevier
ISSN
0257-8972
Volume
2015
Number
264
Pages from–to
216–223
Pages count
7
BIBTEX
@article{BUT112200,
author="Vít {Jan} and Jan {Čupera} and Jan {Čížek},
title="On the search for producing intermetallics by diffusion reaction of cold spray bulk deposits",
year="2015",
volume="2015",
number="264",
month="April",
pages="216--223",
publisher="Elsevier",
issn="0257-8972"
}