Obtaining and characterization of W-Cu composite powder produced by mixing and sintering of Ammonium Paratungstate (Apt) and copper nitrate

Lima, Maria José Santos; Silva, Fernando Erick Santos da; Souto, Maria Veronilda Macedo; Mashhadikarimi, Meysam; Silva, Ariadne Sousa; Gomes, Uílame Umbelino; Souza, Carlson Pereira de

Obtaining and characterization of W-Cu composite powder produced by mixing and sintering of Ammonium Paratungstate (Apt) and copper nitrate

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dc.contributor.author	Lima, Maria José Santos
dc.contributor.author	Silva, Fernando Erick Santos da
dc.contributor.author	Souto, Maria Veronilda Macedo
dc.contributor.author	Mashhadikarimi, Meysam
dc.contributor.author	Silva, Ariadne Sousa
dc.contributor.author	Gomes, Uílame Umbelino
dc.contributor.author	Souza, Carlson Pereira de
dc.date.accessioned	2021-04-28T20:08:01Z
dc.date.available	2021-04-28T20:08:01Z
dc.date.issued	2017-05-18
dc.description.resumo	The objective of this work is obtaining W-30 wt% Cu composite powder from ammonium paratungstate hydrated (APT) and hydrated copper nitrate and investigating the influence of some production process parameters of W- 30 wt% Cu in particles form which results in high sinterability and densification of W-30 wt% Cu composite. To achieve this objective, the powder was obtained by manually mixing the APT and copper nitrate and reducing under a hydrogen atmosphere at 800 °C and then compacting at 500 MPa and sintering in a tubular furnace at 1200 °C for 60 minutes. The obtained materials were characterized by XRD, SEM, EDS, particle size analysis, density and microhardness measurements. The composite powder showed a good homogenization of Cu in W with very fine and agglomerated particles and a mean crystallite size of 25.64 nm. SEM coupled with EDS with mapping analysis revealed a homogeneous distribution of Cu and W in the sintered sample. The composite had a relative density of 96.77% and a microhardness of 523.66 HV. Therefore the method of obtaining the composite powder is feasible to sinter W-30 wt% Cu powder due to a greater dispersion and homogenization of phases and the average particle size	pt_BR
dc.identifier.citation	LIMA, MARIA JOSÉ SANTOS ; SILVA, FERNANDO ERICK SANTOS DA ; SOUTO, MARIA VERONILDA MACEDO ; MASHHADIKARIMI, MEYSAM ; SILVA, ARIADNE SOUSA ; GOMES, UILAME UMBELINO ; SOUZA, Carlson Pereira de . Obtaining and Characterization of W-Cu Composite Powder Produced by Mixing and Sintering of Ammonium Paratungstate (Apt) and Copper Nitrate. MATERIALS RESEARCH, v. 1, p. 1/ Epub may 18-5, 2017. Disponível em: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000800097&lng=en&tlng=em. Acesso em: 29 Mar. 2021. https://doi.org/10.1590/1980-5373-mr-2016-1003	pt_BR
dc.identifier.doi	10.1590/1980-5373-mr-2016-1003
dc.identifier.issn	1980-5373
dc.identifier.issn	1516-1439
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/32338
dc.language	en	pt_BR
dc.publisher	ABM, ABC, ABPol	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Composite W-Cu	pt_BR
dc.subject	Ammonium Paratungstate	pt_BR
dc.subject	Copper Nitrate	pt_BR
dc.title	Obtaining and characterization of W-Cu composite powder produced by mixing and sintering of Ammonium Paratungstate (Apt) and copper nitrate	pt_BR
dc.type	article	pt_BR