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Fabrication of Cu Based Metallic Binder for Diamond Tools by Microwave Pressureless Sintering

Microwave pressureless sintering (MPS) method is successfully applied in the fabrication of Cu based metallic matrix for diamond tools. The main purpose of this work is to obtain better mechanical properties when the metal binder of the diamond tools was prepared by the MPS method. The orthogonal ex...

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Autores principales: Guo, Shenghui, Ye, Xiaolei, Wang, Liang, Koppala, Sivasankar, Yang, Li, Hu, Tu, Gao, Jiyun, Hou, Ming, Hu, Longtao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6119948/
https://www.ncbi.nlm.nih.gov/pubmed/30115877
http://dx.doi.org/10.3390/ma11081453
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author Guo, Shenghui
Ye, Xiaolei
Wang, Liang
Koppala, Sivasankar
Yang, Li
Hu, Tu
Gao, Jiyun
Hou, Ming
Hu, Longtao
author_facet Guo, Shenghui
Ye, Xiaolei
Wang, Liang
Koppala, Sivasankar
Yang, Li
Hu, Tu
Gao, Jiyun
Hou, Ming
Hu, Longtao
author_sort Guo, Shenghui
collection PubMed
description Microwave pressureless sintering (MPS) method is successfully applied in the fabrication of Cu based metallic matrix for diamond tools. The main purpose of this work is to obtain better mechanical properties when the metal binder of the diamond tools was prepared by the MPS method. The orthogonal experimental method is adopted to design the sintering process parameters. The optimized experimental conditions are suggested as 880 °C of sintering temperature, 375 MPa of cold pressure, and 35 min of withholding time. The contrastive investigation of the MPS and conventional pressureless sintering (CPS) are performed under optimized conditions. The microstructures information are obtained by scanning electron microscopy (SEM), X-ray diffraction (XRD), electron probe microanalysis (EPMA), and the necessary mechanical properties, such as relative density, hardness, and flexural strength are tested. Experimental results show that the MPS method, compared with CPS, can significantly improve the mechanical properties of the metallic matrix. The factors of relative density, hardness, and flexural strength increase 1.25%, 3.86%, and 6.28%, respectively. The possible sintering mechanism of the MPS method is also discussed. This work may provide a reference for the fabrication of metal-based diamond tools by microwave heating method.
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spelling pubmed-61199482018-09-05 Fabrication of Cu Based Metallic Binder for Diamond Tools by Microwave Pressureless Sintering Guo, Shenghui Ye, Xiaolei Wang, Liang Koppala, Sivasankar Yang, Li Hu, Tu Gao, Jiyun Hou, Ming Hu, Longtao Materials (Basel) Article Microwave pressureless sintering (MPS) method is successfully applied in the fabrication of Cu based metallic matrix for diamond tools. The main purpose of this work is to obtain better mechanical properties when the metal binder of the diamond tools was prepared by the MPS method. The orthogonal experimental method is adopted to design the sintering process parameters. The optimized experimental conditions are suggested as 880 °C of sintering temperature, 375 MPa of cold pressure, and 35 min of withholding time. The contrastive investigation of the MPS and conventional pressureless sintering (CPS) are performed under optimized conditions. The microstructures information are obtained by scanning electron microscopy (SEM), X-ray diffraction (XRD), electron probe microanalysis (EPMA), and the necessary mechanical properties, such as relative density, hardness, and flexural strength are tested. Experimental results show that the MPS method, compared with CPS, can significantly improve the mechanical properties of the metallic matrix. The factors of relative density, hardness, and flexural strength increase 1.25%, 3.86%, and 6.28%, respectively. The possible sintering mechanism of the MPS method is also discussed. This work may provide a reference for the fabrication of metal-based diamond tools by microwave heating method. MDPI 2018-08-16 /pmc/articles/PMC6119948/ /pubmed/30115877 http://dx.doi.org/10.3390/ma11081453 Text en © 2018 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Guo, Shenghui
Ye, Xiaolei
Wang, Liang
Koppala, Sivasankar
Yang, Li
Hu, Tu
Gao, Jiyun
Hou, Ming
Hu, Longtao
Fabrication of Cu Based Metallic Binder for Diamond Tools by Microwave Pressureless Sintering
title Fabrication of Cu Based Metallic Binder for Diamond Tools by Microwave Pressureless Sintering
title_full Fabrication of Cu Based Metallic Binder for Diamond Tools by Microwave Pressureless Sintering
title_fullStr Fabrication of Cu Based Metallic Binder for Diamond Tools by Microwave Pressureless Sintering
title_full_unstemmed Fabrication of Cu Based Metallic Binder for Diamond Tools by Microwave Pressureless Sintering
title_short Fabrication of Cu Based Metallic Binder for Diamond Tools by Microwave Pressureless Sintering
title_sort fabrication of cu based metallic binder for diamond tools by microwave pressureless sintering
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6119948/
https://www.ncbi.nlm.nih.gov/pubmed/30115877
http://dx.doi.org/10.3390/ma11081453
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