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提高12mol%Ceria-稳定四角形烯酸多晶陶的机械性能和微观结构,含有低含量的Nd2O3

Zengqing Sun¹, Xiaoyu Li¹, Jinxin Xing¹

¹School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, China.

Materials (Basel, Switzerland)

|November 27, 2024

概括

将氧化物 (Nd2O3) 添加到稳定陶中,可以提炼颗粒大小,提高硬度和强度. 通过0.3mol%的Nd2O3兴奋剂实现了最佳的机械性能.

科学领域:

材料科学材料科学材料科学
陶工程陶工程
纳米材料是一种纳米材料.

背景情况:

稳定四角形烯酸多晶 (Ce-TZP) 陶是具有重要应用的先进材料.
控制微观结构和机械性能对于优化Ce-TZP性能至关重要.
新氧化物 (Nd2O3) 兴奋剂被探索为一种修改基陶的方法.

研究的目的:

为了研究不同氧化物 (Nd2O3) 兴奋剂度对12mol%稳定四角氧化多晶 (Ce-TZP) 陶的机械性能和微观结构的影响.
为了确定优越的综合机械特性,最佳的Nd2O3注水平.
为开发纳米级Ce-TZP陶提供基础.

主要方法:

使用固态方法合成12mol%的Ce-TZP陶,与xNd2O3 (x = 00.7mol%) 合.
微观结构分析,观察谷粒大小的演变.
机械性能测试,包括硬度,强度和断裂性测量.

主要成果:

随着注的增加,Nd2O3注显著减少了陶颗粒的大小,从2.93微米减少到0.69微米.
陶的硬度和强度在2O3含量较高时显著增加.
由于压力诱导的四角形到单晶相转换在较小的颗粒中,断裂性降低;立方的形成在没有二次相的情况下加速.

结论:

Nd2O3合有效地提炼了Ce-TZP陶的微观结构,从而提高了硬度和强度.
在0.3mol%的Nd2O3中观察到最佳的全面机械性能.
这项研究为制造高性能纳米级Ce-TZP陶提供了宝贵的见解.

关键词:

12Ce-TZP-xNd2O3 的时间.机械性能机械性能机械性能微观结构的微观结构

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