Thermal and optical properties of transparent magnesium oxide ceramics fabricated by post hot-isostatic pressing

Kiyoshi Itatani, Takuma Tsujimoto, Akira Kishimoto

研究成果査読

87 被引用数 (Scopus)

抄録

The transparent magnesium-oxide (MgO) ceramic could be fabricated by a hot-isostatic press (HIP) technique of pressureless-sintered MgO compact, using non-agglomerated MgO powder with the average primary particle size of 57 nm. The relative density and average grain size of MgO compact pressureless-sintered at 1600 °C for 5 h were 96.7% and 10.7 μm, respectively. Owing to the HIPing operation (0.5 h) of pressureless-sintered compact at a temperature between 1500 and 1600 °C, relative densities of the MgO ceramics attained 99.9% or more with light transmission. The average grain size increased from 132 to 199 μm with HIPing temperature from 1500 to 1600 °C. The in-line transmission of the MgO specimen HIPed at 1600 °C for 0.5 h increased from 52 to 55% with increasing wavelength from 500 to 900 nm and corresponded to approximately 65%, compared to that of the MgO single crystal. The thermal conductivity of this MgO specimen attained 53.5 W m-1 K-1, whereas the thermal diffusivity decreased gradually to reach 0.0416 cm2 s-1 with increasing test temperature up to 873 K.

本文言語English
ページ(範囲)639-645
ページ数7
ジャーナルJournal of the European Ceramic Society
26
4-5
DOI
出版ステータスPublished - 2006

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 材料化学

フィンガープリント

「Thermal and optical properties of transparent magnesium oxide ceramics fabricated by post hot-isostatic pressing」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル