Reaction Mechanism of ZrB2-ZrC Formation in Ni-Zr-B4C System Analyzed by Differential Scanning Calorimetry

The reaction mechanism of ZrB2-ZrC formation in a 30% Ni-Zr-B4C system under argon was revealed by using differential scanning calorimetry (DSC), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results indicated that the reaction mech...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jiaying Xu, Pengfei Ma, Binglin Zou
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	reaction mechanism ZrB<sub>2</sub>-ZrC combustion synthesis self-propagation high-temperature synthesis differential scanning calorimetry Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/571222e8f21243f2b6ec6ac9f603254c
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:571222e8f21243f2b6ec6ac9f603254c
record_format	dspace
spelling	oai:doaj.org-article:571222e8f21243f2b6ec6ac9f603254c2021-11-11T18:02:31ZReaction Mechanism of ZrB<sub>2</sub>-ZrC Formation in Ni-Zr-B<sub>4</sub>C System Analyzed by Differential Scanning Calorimetry10.3390/ma142164671996-1944https://doaj.org/article/571222e8f21243f2b6ec6ac9f603254c2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6467https://doaj.org/toc/1996-1944The reaction mechanism of ZrB<sub>2</sub>-ZrC formation in a 30% Ni-Zr-B<sub>4</sub>C system under argon was revealed by using differential scanning calorimetry (DSC), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results indicated that the reaction mechanism in the Ni-Zr-B<sub>4</sub>C system was complex. Initially, Ni<sub>x</sub>Zr<sub>y</sub> and Ni<sub>x</sub>B<sub>y</sub> intermetallics were formed via solid-state diffusion reactions between Ni, B<sub>4</sub>C and Zr. Then, the eutectic reaction between Ni<sub>2</sub>B and Ni<sub>4</sub>B<sub>3</sub> lead to the formation of Ni-B liquid. The free C atoms dissolved into the Ni-B liquid to form a Ni-B-C ternary liquid, and then part of the Zr powder dissolved into the surrounding Ni-B-C ternary liquid to form Ni-Zr-B-C quaternary liquid. Finally, ZrB<sub>2</sub> and ZrC formed and precipitated out of the saturated liquid. The eutectic liquid plays an important role during the formation of ZrB<sub>2</sub>-ZrC.Jiaying XuPengfei MaBinglin ZouMDPI AGarticlereaction mechanismZrB<sub>2</sub>-ZrCcombustion synthesisself-propagation high-temperature synthesisdifferential scanning calorimetryTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6467, p 6467 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	reaction mechanism ZrB<sub>2</sub>-ZrC combustion synthesis self-propagation high-temperature synthesis differential scanning calorimetry Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	reaction mechanism ZrB<sub>2</sub>-ZrC combustion synthesis self-propagation high-temperature synthesis differential scanning calorimetry Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Jiaying Xu Pengfei Ma Binglin Zou Reaction Mechanism of ZrB<sub>2</sub>-ZrC Formation in Ni-Zr-B<sub>4</sub>C System Analyzed by Differential Scanning Calorimetry
description	The reaction mechanism of ZrB<sub>2</sub>-ZrC formation in a 30% Ni-Zr-B<sub>4</sub>C system under argon was revealed by using differential scanning calorimetry (DSC), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results indicated that the reaction mechanism in the Ni-Zr-B<sub>4</sub>C system was complex. Initially, Ni<sub>x</sub>Zr<sub>y</sub> and Ni<sub>x</sub>B<sub>y</sub> intermetallics were formed via solid-state diffusion reactions between Ni, B<sub>4</sub>C and Zr. Then, the eutectic reaction between Ni<sub>2</sub>B and Ni<sub>4</sub>B<sub>3</sub> lead to the formation of Ni-B liquid. The free C atoms dissolved into the Ni-B liquid to form a Ni-B-C ternary liquid, and then part of the Zr powder dissolved into the surrounding Ni-B-C ternary liquid to form Ni-Zr-B-C quaternary liquid. Finally, ZrB<sub>2</sub> and ZrC formed and precipitated out of the saturated liquid. The eutectic liquid plays an important role during the formation of ZrB<sub>2</sub>-ZrC.
format	article
author	Jiaying Xu Pengfei Ma Binglin Zou
author_facet	Jiaying Xu Pengfei Ma Binglin Zou
author_sort	Jiaying Xu
title	Reaction Mechanism of ZrB<sub>2</sub>-ZrC Formation in Ni-Zr-B<sub>4</sub>C System Analyzed by Differential Scanning Calorimetry
title_short	Reaction Mechanism of ZrB<sub>2</sub>-ZrC Formation in Ni-Zr-B<sub>4</sub>C System Analyzed by Differential Scanning Calorimetry
title_full	Reaction Mechanism of ZrB<sub>2</sub>-ZrC Formation in Ni-Zr-B<sub>4</sub>C System Analyzed by Differential Scanning Calorimetry
title_fullStr	Reaction Mechanism of ZrB<sub>2</sub>-ZrC Formation in Ni-Zr-B<sub>4</sub>C System Analyzed by Differential Scanning Calorimetry
title_full_unstemmed	Reaction Mechanism of ZrB<sub>2</sub>-ZrC Formation in Ni-Zr-B<sub>4</sub>C System Analyzed by Differential Scanning Calorimetry
title_sort	reaction mechanism of zrb<sub>2</sub>-zrc formation in ni-zr-b<sub>4</sub>c system analyzed by differential scanning calorimetry
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/571222e8f21243f2b6ec6ac9f603254c
work_keys_str_mv	AT jiayingxu reactionmechanismofzrbsub2subzrcformationinnizrbsub4subcsystemanalyzedbydifferentialscanningcalorimetry AT pengfeima reactionmechanismofzrbsub2subzrcformationinnizrbsub4subcsystemanalyzedbydifferentialscanningcalorimetry AT binglinzou reactionmechanismofzrbsub2subzrcformationinnizrbsub4subcsystemanalyzedbydifferentialscanningcalorimetry
_version_	1718431941408063488

Reaction Mechanism of ZrB<sub>2</sub>-ZrC Formation in Ni-Zr-B<sub>4</sub>C System Analyzed by Differential Scanning Calorimetry

Ejemplares similares