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Title: Fabrication and characterization of transparent sesquioxide laser ceramics
Authors: Yin, Danlei
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2019
Publisher: Nanyang Technological University
Source: Yin, D. (2019). Fabrication and characterization of transparent sesquioxide laser ceramics. Doctoral thesis, Nanyang Technological University, Singapore.
Abstract: Sesquioxide transparent ceramics such as Y2O3, Lu2O3, and Sc2O3, have been considered as promising host materials for high powder solid-state lasers. To meet the laser applications requirements, porosity of the ceramics must be minimized to less than 0.01%. Densification of ceramics is closely related to quality of powders, sintering additives and sintering techniques. In the present research, comprehensive studies regarding to the powder synthesis, sintering additive behavior and sintering controls were conducted. It was found that dispersants have great influence on the morphology and dispersity of both precursors and calcined powders in the chemical co-precipitation process. The utilization of spraying technique provided another way to reduce agglomerations and enhance the sinterability of the powders. At the optimized calcination temperature and sintering conditions, the transparency of sesquioxide ceramics were greatly improved by using the well dispersed powders. Moreover, the role of aliovalent sintering additives, CaO and CaO-ZrO2, in the Y2O3 ceramic densification were explored.
DOI: 10.32657/10356/137215
Rights: This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Theses

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