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Microstructural Evolution of Diamond-Based Composites at High Temperature and High Pressure

Improving the toughness of diamond composites has become an industrial demand. In this work, Co(50)Ni(40)Fe(10) multi-element alloy was designed as binder for diamond-based composites prepared by high temperature and high pressure (HTHP). Two methods of mixing-sintering and infiltration-sintering we...

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Autores principales: Qiu, Tianxu, Feng, Jianwei, Cai, Bo, Fan, Guojiang, Zhang, Wei, Liu, Yong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9786181/
https://www.ncbi.nlm.nih.gov/pubmed/36556558
http://dx.doi.org/10.3390/ma15248753
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author Qiu, Tianxu
Feng, Jianwei
Cai, Bo
Fan, Guojiang
Zhang, Wei
Liu, Yong
author_facet Qiu, Tianxu
Feng, Jianwei
Cai, Bo
Fan, Guojiang
Zhang, Wei
Liu, Yong
author_sort Qiu, Tianxu
collection PubMed
description Improving the toughness of diamond composites has become an industrial demand. In this work, Co(50)Ni(40)Fe(10) multi-element alloy was designed as binder for diamond-based composites prepared by high temperature and high pressure (HTHP). Two methods of mixing-sintering and infiltration-sintering were used to prepare diamond-based composites with different diamond contents. The phase diagrams of Co-C and Co(50)Ni(40)Fe(10)-C at 6 GPa were calculated by Thermo-Calc. The results show that Co(50)Ni(40)Fe(10) multi-element alloy promotes the sintering of diamond powder than element Co. The transverse rupture strength (TRS) of sintered diamond with Co(50)Ni(40)Fe(10) (Co(50)Ni(40)Fe(10)-75 vol% diamond) is higher than that of Co-Comp (Co-75 vol% diamond). The TRS of polycrystalline diamond (PCD) with Co(50)Ni(40)Fe(10) alloy binder is up to 1360.3 MPa, which is 19.2% higher than Co-PCD. Compared with Co, using Co(50)Ni(40)Fe(10) as binder results in a less metal residue in PCD, while the metal cluster area is smaller and the metal distribution is more uniform.
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spelling pubmed-97861812022-12-24 Microstructural Evolution of Diamond-Based Composites at High Temperature and High Pressure Qiu, Tianxu Feng, Jianwei Cai, Bo Fan, Guojiang Zhang, Wei Liu, Yong Materials (Basel) Article Improving the toughness of diamond composites has become an industrial demand. In this work, Co(50)Ni(40)Fe(10) multi-element alloy was designed as binder for diamond-based composites prepared by high temperature and high pressure (HTHP). Two methods of mixing-sintering and infiltration-sintering were used to prepare diamond-based composites with different diamond contents. The phase diagrams of Co-C and Co(50)Ni(40)Fe(10)-C at 6 GPa were calculated by Thermo-Calc. The results show that Co(50)Ni(40)Fe(10) multi-element alloy promotes the sintering of diamond powder than element Co. The transverse rupture strength (TRS) of sintered diamond with Co(50)Ni(40)Fe(10) (Co(50)Ni(40)Fe(10)-75 vol% diamond) is higher than that of Co-Comp (Co-75 vol% diamond). The TRS of polycrystalline diamond (PCD) with Co(50)Ni(40)Fe(10) alloy binder is up to 1360.3 MPa, which is 19.2% higher than Co-PCD. Compared with Co, using Co(50)Ni(40)Fe(10) as binder results in a less metal residue in PCD, while the metal cluster area is smaller and the metal distribution is more uniform. MDPI 2022-12-08 /pmc/articles/PMC9786181/ /pubmed/36556558 http://dx.doi.org/10.3390/ma15248753 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Qiu, Tianxu
Feng, Jianwei
Cai, Bo
Fan, Guojiang
Zhang, Wei
Liu, Yong
Microstructural Evolution of Diamond-Based Composites at High Temperature and High Pressure
title Microstructural Evolution of Diamond-Based Composites at High Temperature and High Pressure
title_full Microstructural Evolution of Diamond-Based Composites at High Temperature and High Pressure
title_fullStr Microstructural Evolution of Diamond-Based Composites at High Temperature and High Pressure
title_full_unstemmed Microstructural Evolution of Diamond-Based Composites at High Temperature and High Pressure
title_short Microstructural Evolution of Diamond-Based Composites at High Temperature and High Pressure
title_sort microstructural evolution of diamond-based composites at high temperature and high pressure
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9786181/
https://www.ncbi.nlm.nih.gov/pubmed/36556558
http://dx.doi.org/10.3390/ma15248753
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