Microscopic thermal diffusivity measurements of ceramic and metallic foams lumps in temperature

作者：Rochais D; Coquard R^*; Baillis D

来源：International Journal of Thermal Sciences, 2015, 92: 179-187.

DOI：10.1016/j.ijthermalsci.2015.01.027

• Thermal diffusivity
• Solid phase
• NiCrAl foam
• Mullite foam
• Photoreflectance microscopy technique

This paper presents temperature dependent thermal diffusivity measurements of NiCrAl and mullite foam solid skeletons. The photoreflectance microscopy (PM) technique is used to characterize these skeletons at the microscopic scale. The characterized homogeneous zone area does not exceed 100 mu m(2). A singular sample preparation has been realized to take into account the brittleness and the optical semi-transparency of the mullite foam lumps. This specific sample preparation as well as the details of the technique are described in this article.

• 出版日期2015-6
• 单位中国地震局