在Al2O3-SiC-C中增强湿度的SiC-石墨协同作用:碳资源比较,烧结反应和潜在的风病学效应
Benjun Cheng1, Mingyang Huang1, Guoqi Liu2
1School of Energy Science and Engineering, Central South University, Changsha 410083, China.
Materials (Basel, Switzerland)
|August 14, 2025
概括
这项研究探讨了Al2O3-SiC-C耐火材料与高炉改性石墨. 最佳性能是通过1%重量%的修饰薄片石墨实现的,尽管它呈现出意想不到的降水效应.
科学领域:
- 材料科学 材料科学 材料科学
- 陶工程 陶工程
- 耐火技术 耐火技术
背景情况:
- 对于高炉中的Al2O3-SiC-C耐火材料,已有确定的研究.
- 在了解SiC改性石墨和替代碳来源的性能方面发现了差距.
- 需要对先进的耐火造材料进行实验室和工业试验.
研究的目的:
- 研究Al2O3-SiC-C造机的烧结,机械性能和使用性能.
- 评估不同含量的改性薄片石墨,焦油和碳黑.
- 分析SiC修饰在石墨上的作用及其对耐火性行为的影响.
主要方法:
- 合成的Al2O3-SiC-C可采用不同碳来源.
- 使用扫描电子显微镜 (SEM),X射线衍射 (XRD) 和能量分散光谱 (EDS) 进行特征化样本.
- 进行实验室和工业试验以评估性能.
主要成果:
- SiC修饰石墨通过热膨胀不匹配诱导微裂变硬化,增强机械性能.
- SiC层提高了石墨的湿透性和氧化抵抗性,通过矩阵钉定和裂纹偏移,有助于侵蚀抵抗.
- 经过1%重量%的修改片状石墨观察到最佳性能;然而,微裂纹限制了对侵蚀抵抗的净改进.
- 工业试验揭示了一个意想不到的降水机制与最佳配方.
结论:
- 薄片石墨的SiC改性为Al2O3-SiC-C耐火材料提供了协同效益,提高了机械性能.
- 改性石墨有助于提高耐侵蚀性,尽管微裂纹具有抵消作用.
- 1%重量%的改性薄片石墨是一种最佳成分,但需要进一步研究其降水现象.
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