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使用MoSi₂的无压烧结碳化物陶的微观结构和特性添加

Xiuzheng Chen^1,2, Haibo Wu², Huan Liu²

¹School of Material Science and Chemical Engineering, Ningbo University, Ningbo 315211, China.

Materials (Basel, Switzerland)

|May 11, 2024

概括

添加少量的二氧化 (MoSi2) 显著改善碳化 (ZrC) 陶. 这些增强的ZrC陶对先进的核能系统具有更好的密度和机械性能.

科学领域:

材料科学材料科学材料科学
核工程核工程是指核工程.

背景情况:

碳化 (ZrC) 陶由于其高点和抗辐射性,对第四代核反应堆具有前景.
在极端环境中实现ZrC的高相对密度对于最佳性能至关重要.

研究的目的:

研究二氧化碳 (MoSi2) 添加剂对ZrC陶的特性的影响.
为优化用于核应用的密集ZrC的制备.

主要方法:

无压力烧结ZrC的不同MoSi2含量.
密集化,微观结构和机械/热性质的系统分析.

主要成果:

添加MoSi2通过液相形成增强了ZrC密度.
观察到ZrC颗粒的精细化是由于碳化的固定.
采用2.5%体积%MoSi2的ZrC实现了99.1%的相对密度,屈曲强度为408MPa,维克尔硬度为17.1GPa.

结论:

MoSi2是一种有效的添加剂,可以改善ZrC密度和微观结构.
增强ZrC陶具有卓越的机械性能,使其适用于先进的核系统.

关键词:

在 ZrCC 中,机械性能机械性能机械性能无压力烧结无压力烧结热特性热特性热特性

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