Nano Archive

Characteristics of selected thermal properties of 8YSZ type powders produced with different methods

Moskal, G (2010) Characteristics of selected thermal properties of 8YSZ type powders produced with different methods. IOP Conference Series: Materials Science and Engineering, 15 (1). 012065.

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Official URL: http://stacks.iop.org/1757-899X/15/i=1/a=012065

Abstract

The paper presents test results concerning characteristics of the selected thermal properties of ceramic powders of 8YSZ type on the basis of zirconium oxide modified with yttrium oxide obtained with different methods. The first of the powders was obtained with the spray drying method, the second one was characterized by a structure typical for obtaining methods from liquid phase and the third of the powders was obtained with the grinding method to get maximally broken up powder particles and similar to "nano" type structures. The scope of the tests encompassed thermal diffusivity analysis of the powders in a compressed form within temperature range 25–1500°C, and also tests of specific heat within similar temperature range. Specific heat measurements of the powders showed that the highest values within the entire test temperature range were obtained for the finest grain ("nano-sized") powder. In other two cases, the values obtained were very similar. Analogous results were found in the case of thermal diffusivity measurements. The ground powder was characterized by significantly lower thermal diffusivity value than other two types of powders, which was a result of very strong break-up of particles.

Item Type:Article
ID Code:11184
Deposited By:Prof. Alexey Ivanov
Deposited On:01 Nov 2011 23:25
Last Modified:02 Nov 2011 00:47

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