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一项关于稀土改性共基复合材料粉末及其对化碳化物微观结构和性质的影响的研究
Zhiyong Li1,2, Azman Jalar1, Norinsan Kamil Othman1
1Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia.
Materials (Basel, Switzerland)
|April 24, 2025
概括
稀土Y兴奋剂增强了碳化物 (WC) -硬化碳化物的性能. 这种新的方法确保了均的Y分布,提炼了谷物结构,提高了硬度和性.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是金工业的一个方面.
- 纳米技术 纳米技术
背景情况:
- 碳化物 (WC) - 凝固碳化物是关键的工程材料.
- 提高它们的机械性能,如硬度和断裂性,仍然是关键的研究目标.
- 稀土元素的兴奋剂为财产修改提供了一个有前途的途径.
研究的目的:
- 开发一种用于将稀土Y加入WC-Co水泥碳化物中的新方法.
- 调查Y兴奋剂对WC-Co.微观结构和机械性能的影响.
- 为了优化Y含量,以获得卓越的化碳化物性能.
主要方法:
- 制造一种以稀土Y为剂的基于Co的复合材料粉末,通过喷雾干燥,烧焦和低温降解.
- 将Y化Co粉末与碳化 (WC) 粉末混合,然后进行球磨.
- 使用火花等离子烧结 (SPS) 将混合物巩固成Y化WC-Co化碳化物.
主要成果:
- 这种新的工艺确保了Y在Co矩阵内的均分布.
- 均的Y分布在烧结过程中改进了合金的粒度结构,提高了性能.
- 最佳的Y含量 (1.5%) 产生的密度为98.91%,硬度为2120 Hv30,折断度为8.24 MPa·m−1/2.2.
- Y兴奋剂增强了结合剂阶段,并抑制了WC粒的生长.
结论:
- 开发的喷雾干燥,烧焦和减少方法有效地将稀土Y纳入WC-Co水泥碳化物中.
- Y兴奋剂显著提高了WC-Co的机械性能,特别是硬度和断裂性.
- 这种方法为生产高性能化碳化物提供了一个可行的策略.
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