A new method for manufacturing graded refractories by localized hot uniaxial pressing

A new method for manufacturing graded refractories by localized hot uniaxial pressing
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局部热单轴压制制造级配耐火材料的新方法

DOI:
10.1016/j.ceramint.2017.07.167
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发表时间:
--
影响因子:
5.2
通讯作者:
Biermann
Biermann
中科院分区:
材料科学1区
文献类型:
--
作者:
Solarek;Aneziris;Biermann

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在这项研究中,一个细粒度的碳结合氧化铝圆柱体在氩气气氛中的高温下单轴压制。用各种技术描述了由此产生的机械性能、物理性能和微观结构的变化。发现材料的孔隙率显著降低,导致更高的密度、更高的动态杨氏模量、更高的强度和增加的硬度。此外,观察到孔隙率和硬度的梯度,这是由于压缩过程中温度分布不均匀造成的。根据计算结果,可以推断出生产梯度耐火材料的可能性和条件。
In this study, a cylinder of fine-grained carbon-bonded alumina was pressed uniaxially at high temperatures in an argon atmosphere. The resulting changes in mechanical properties, physical properties and microstructure were described with various techniques. The porosity of the material was found to have decreased significantly, leading to higher density, higher dynamic Young's modulus, higher strength and increased hardness. Additionally, gradients in porosity and hardness were observed that resulted from inhomogeneous temperature distribution during compression. Possibilities and conditions for the production of graded refractory materials can be deduced from the results.
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