Progress in sintering technology of transparent polycrystalline alumina ceramics

Author:

Yin Jun12ORCID,Li Xiao12ORCID,Zhang Xi1,Yu Shengquan1,Lai Yuanming2ORCID

Affiliation:

1. Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, P. R. China

2. School of Mechanical and Electrical Engineering, Chengdu University of Technology, Chengdu 610059, P. R. China

Abstract

As an important optical material, transparent polycrystalline alumina (PCA) ceramic is widely used in aerospace, high-temperature windows, medical due to its high strength, corrosion resistance, high hardness, and excellent stability at high temperatures. Since Al2O3 belongs to the crystal structure of the trigonal crystal system ([Formula: see text]), light is prone to birefringence when passing through the interior of the ceramic, and its transmittance is difficult to reach that of cubic crystal materials such as Y2O3 even under almost fully dense conditions. Using a special sintering process to decrease the sintering temperature and improve the real in-line transmittance of PCA ceramics has always been a research hotspot in related fields. In this work, a comprehensive review is made from the point of view of the sintering process based on the research status of transparent PCA ceramics in decades.

Funder

Sichuan Science and Technology Program

Guangdong Provincial Key Laboratory of Electronic Functional Materials and Device

State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals

Publisher

World Scientific Pub Co Pte Ltd

Subject

Electrical and Electronic Engineering,Condensed Matter Physics,Ceramics and Composites,Electronic, Optical and Magnetic Materials

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