journal article·2024-01Open access

Preparation of spherical AlON powder and high transparent ceramics by pressureless sintering

Yiming Zhang, Qing He, Haoyang Wu, Zhirui Zhang, Baorui Jia, Huifeng Lu, Siyong Gu, Tao Li, Dengshuai Guo, Zaiwen Zhu, Dong Hou, Xuanhui Qu, Mingli Qin

Abstract

Abstract The sphericity and fluidity of the powder play a crucial role in the forming and sintering of ceramics. High‐performance AlON spherical powder was prepared for the first time by spray drying of powder fired by solid‐phase reaction, and the preparation of AlON transparent ceramics was realized under pressureless sintering conditions. The effect of AlN dosage on the purity of AlON powder was investigated, and the powder fluidity was improved by spray drying technique. Then the best spray drying process was selected by scanning electron microscopy, AD/TD, green density, MIP and transmittance measurements. The AlON particles obtained under the optimal granulation process have good dispersibility, high green density after pressing, and uniform pore distribution. After dry pressing and sintering at 1900°C for 20 h, the AlON ceramics with linear transmissivity of 84.3% at 2 μm wavelength can be obtained. The excellent pressing and sintering properties of AlON granulated particles make it possible for large‐scale production.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Advanced ceramic materials synthesis · Microwave Dielectric Ceramics Synthesis · Aerogels and thermal insulation

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing China

Institute of New Electrical Material State Grid Smart Grid Research Institute Co., Ltd Beijing China

Xiamen Juci Technology Co., Ltd Xiamen China

Amoy Institute of Technovation Xiamen China

State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing China

Institute for Materials Science and Engineering Xiamen University of Technology Xiamen China

Shanghai Microsatellite Engineering Center Shanghai China

Innovation Academy for Microsatellites of CAS Shanghai China

Beijing Advanced Innovation Center of Materials Genome Engineering University of Science and Technology Beijing Beijing China

Funding

National Key Research and Development Program of China · Fundamental Research Funds for the Central Universities

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