Highly dense, inexpensive composites via melt infiltration of Ni into WC/Fe preforms
Abstract
Generally, WC-based composites use Co as the metal binder phase to consolidate using liquid-phase sintering with a small percentage of Co, but a potentially lower cost binder phase can be made with a different approach when using large amount of metal binder phase. FeNi as a metal binder material is much cheaper than Co. WC can be liquid-phase sintered and melt infiltrated with FeNi, but by making FeNi in situ, costs lower even further. Composites of WC-(Fe-Ni) were made by first pressing a mixture of WC and Fe powders and subsequently melt infiltrating Ni in an amount corresponding to less volume than the porosity of the preform to ensure high WC content. The research objective was to make highly dense composites via melt infiltration with a low-cost metal binder phase in situ. This approach has the potential to make fully dense composites, rather than hardmetals, with suitable properties at lower costs. The density and hardness are 97.4%TD and 6.72 GPa, respectively.
- Authors:
-
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1515672
- Alternate Identifier(s):
- OSTI ID: 1547479
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- International Journal of Refractory and Hard Metals
- Additional Journal Information:
- Journal Volume: 82; Journal Issue: C; Journal ID: ISSN 0263-4368
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Cermet composites; Pressureless melt infiltration; WC-FeNi
Citation Formats
Cramer, Corson L., Preston, Alexander D., Elliott, Amy M., and Lowden, Richard A. Highly dense, inexpensive composites via melt infiltration of Ni into WC/Fe preforms. United States: N. p., 2019.
Web. doi:10.1016/j.ijrmhm.2019.04.019.
Cramer, Corson L., Preston, Alexander D., Elliott, Amy M., & Lowden, Richard A. Highly dense, inexpensive composites via melt infiltration of Ni into WC/Fe preforms. United States. https://doi.org/10.1016/j.ijrmhm.2019.04.019
Cramer, Corson L., Preston, Alexander D., Elliott, Amy M., and Lowden, Richard A. Fri .
"Highly dense, inexpensive composites via melt infiltration of Ni into WC/Fe preforms". United States. https://doi.org/10.1016/j.ijrmhm.2019.04.019. https://www.osti.gov/servlets/purl/1515672.
@article{osti_1515672,
title = {Highly dense, inexpensive composites via melt infiltration of Ni into WC/Fe preforms},
author = {Cramer, Corson L. and Preston, Alexander D. and Elliott, Amy M. and Lowden, Richard A.},
abstractNote = {Generally, WC-based composites use Co as the metal binder phase to consolidate using liquid-phase sintering with a small percentage of Co, but a potentially lower cost binder phase can be made with a different approach when using large amount of metal binder phase. FeNi as a metal binder material is much cheaper than Co. WC can be liquid-phase sintered and melt infiltrated with FeNi, but by making FeNi in situ, costs lower even further. Composites of WC-(Fe-Ni) were made by first pressing a mixture of WC and Fe powders and subsequently melt infiltrating Ni in an amount corresponding to less volume than the porosity of the preform to ensure high WC content. The research objective was to make highly dense composites via melt infiltration with a low-cost metal binder phase in situ. This approach has the potential to make fully dense composites, rather than hardmetals, with suitable properties at lower costs. The density and hardness are 97.4%TD and 6.72 GPa, respectively.},
doi = {10.1016/j.ijrmhm.2019.04.019},
journal = {International Journal of Refractory and Hard Metals},
number = C,
volume = 82,
place = {United States},
year = {Fri Apr 26 00:00:00 EDT 2019},
month = {Fri Apr 26 00:00:00 EDT 2019}
}
Web of Science
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Works referencing / citing this record:
Lightweight TiC–(Fe–Al) ceramic–metal composites made in situ by pressureless melt infiltration
journal, July 2019
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