Fabrication and Mechanical Properties of LaNbO4 and LaNbO4/Al2O3 Composites

T. Takagi, Y. H. Choa, T. Sekino, K. Niihara

研究成果: Article査読

10 被引用数 (Scopus)

抄録

Polycrystalline LaNbO4 and LaNbO4/Al2O3 composites were fabricated by a PECS (Pulse Electric Current Sintering) process to obtain the dense sintered materials. XRD analyses revealed that LaNbO4/Al2O3 composites consisted of LaNbO4 and Al2O3. SEM observations revealed that added Al2O3 particles prohibited the matrix grain growth. Fracture strength, Vickers hardness and Young's modulus increased with increasing Al2O3 content. The monoclinic-to-tetragonal phase transformation behavior was investigated by thermomechanical analysis (TMA) for LaNbO4 monolith and LaNbO4/Al2O3 composites. The volume changes at the phase transition were observed for all the samples. The monoclinic-to-tetragonal transition temperature decreased with decreasing matrix grain size. Indentation load-depth hysteresis loops for LaNbO4/5 vol% Al2O3 composite exhibited the loading rate sensitivity.

本文言語English
ページ(範囲)181-184
ページ数4
ジャーナルKey Engineering Materials
161-163
出版ステータスPublished - 1999
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

フィンガープリント

「Fabrication and Mechanical Properties of LaNbO<sub>4</sub> and LaNbO<sub>4</sub>/Al<sub>2</sub>O<sub>3</sub> Composites」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