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A Review on Binderless Tungsten Carbide: Development and Application.
Jialin Sun1, Jun Zhao2, Zhifu Huang3
1State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China. jialinsun@xjtu.edu.cn.
Nano-Micro Letters
|June 17, 2021
Summary
Binderless tungsten carbide (BTC) offers a cobalt-free alternative with potential for industrial use. This review details strategies for enhancing BTC
Area of Science:
- Materials Science
- Powder Metallurgy
- Advanced Ceramics
Background:
- Cobalt-containing tungsten carbide (WC-Co) alloys are widely used but face challenges like cobalt's price volatility, toxicity, and performance degradation.
- Binderless tungsten carbide (BTC) is a promising alternative, but industrial-scale production is limited due to challenges in achieving full densification and high toughness.
Purpose of the Study:
- To comprehensively review the current knowledge on sintering behavior, microstructure, and mechanical properties of binderless tungsten carbide (BTC).
- To highlight strategies for improving densification and toughening methods for BTC.
- To provide a reference for enhancing BTC performance, reliability, and enabling wider applications.
Main Methods:
- Literature review of sintering behavior, microstructure, and mechanical properties of BTC.
- Analysis of strategies for densification improvement.
- Evaluation of toughening methods for BTC.
Main Results:
- The fabrication of highly dense and high-performance BTC is demonstrated to be economically and technically feasible.
- BTC properties can be tailored through careful selection of chemical composition, processing techniques, and parameters.
- Current knowledge on sintering, microstructure, and mechanical properties of BTC is summarized.
Conclusions:
- Binderless tungsten carbide (BTC) presents a viable, cobalt-free alternative with tailored properties achievable through optimized processing.
- Addressing challenges in densification and toughness is key to advancing BTC for broader industrial applications.
- Further research and development can lead to environmentally friendly, cost-effective, and high-performance BTC materials.
