Electronic structure, thermodynamic stability and high-temperature sensing properties of Er-α-SiAlON ceramics.

ABSTRACT: α-SiAlON ceramics have been in use as engineering ceramics in the most arduous industrial environments such as molten metal handling, cutting tools, gas turbine engines, extrusion molds, thermocouple sheaths, protective cover for high-temperature sensors, etc., owing to their outstanding mechanical, thermal and chemical stability. Taking advantage of the intrinsic properties of α-SiAlONs, we investigate, in this paper, the possibility of using the Er-doped α-SiAlON (Er-α-SiAlON) ceramic as a high-temperature sensing material via its unique near-infrared to visible upconversion property. We first use neutron diffraction and density functional theory calculations to study the electronic structure and thermodynamic stability of Er-α-SiAlON. It is found that the interstitial doping of Er stabi

SUBMITTER: Kshetri YK 

PROVIDER: S-EPMC7080770 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature