Open AccessLow‐pressure fabrication of IR‐transparent Y 2 O 3 via spark plasma sintering
Author(s) -
Irom Elnaz,
Zakeri Mohammad,
Ahangari Hossein Zadeh Ali Sedaghat,
Safian Saman,
Rahbari Ali
Publication year - 2016
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2016.0218
Subject(s) - spark plasma sintering , materials science , microstructure , fracture toughness , sintering , ceramic , fabrication , grain size , composite material , metallurgy , medicine , alternative medicine , pathology
Different pressures of 80 and 90 MPa were applied to produce Y 2 O 3 ceramics by spark plasma sintering in this work. Effects of pressure were investigated on densification, microstructure, infrared (IR) transmission and mechanical properties. It was found that applying higher pressure led to finer microstructure and consequently higher hardness and fracture toughness. An IR‐transparent Y 2 O 3 ceramic with 60% transmission at wavelength of 5 µm was obtained by sintering at 1300°C under uniaxial pressure of 90 MPa. This sample had an average grain size of 0.76 µm and hardness and fracture toughness of 9.37 GPa and 1.60 MPa.m 1/2 , respectively.