半透明α-和α/β-SiAlON陶瓷：相多样性与光学性能关系的研究

Q4 Materials Science

International Journal of Microstructure and Materials Properties Pub Date : 2020-01-22 DOI:10.1504/ijmmp.2020.10026338

S. Avcıoğlu, S. Kurama

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引用次数: 0

摘要

采用火花等离子烧结(SPS)技术制备了Dy+3、Y+3和La+3掺杂的SiAlON陶瓷。研究了添加剂阳离子、起始成分和加工条件对SiAlON陶瓷形态演变和相组装的影响。讨论了相分异对SiAlON陶瓷光学性能的影响。结果表明，可以成功制备半透明的α- SiAlON、α/β-SiAlON陶瓷及其AlNpolytypoids原位复合材料。大量的二次相如aln -多型相和氮化氧玻璃相的存在降低了SiAlON陶瓷的光透射率。Y+3和Dy+3阳离子的掺杂比La+3更有利于单相α-SiAlON的形成。掺杂Dy+3阳离子的SiAlON陶瓷形成了相对均匀的最终微观结构。因此，在Dy-α- sialon(42.2%)和Dy-α/β-SiAlON(45.07%)样品上观察到较高的红外透射值。

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Translucent α- and α/β-SiAlON ceramics: study on investigation of the relationship between phase diversity and optical properties

In this study, Dy+3, Y+3, and La+3 doped SiAlON ceramics were fabricated by using spark plasma sintering (SPS) technique. The effects of additive cation, starting composition and processing conditions on the morphological evolution as well as on the phase assembly of SiAlON ceramics were investigated. The influence of phase diversity on the optical properties of SiAlON ceramics was also discussed. Results indicate that the translucent α- SiAlON, α/β-SiAlON ceramics and their in-situ composites with AlNpolytypoids could be successfully obtained. The presence of a high amount of secondary phases such as AlN-polytype and the oxynitride glassy phase has been found to reduce the optical transmission of SiAlON ceramics. The doping of Y+3 and Dy+3 cations contributed better to the formation of single-phase α-SiAlON than that of La+3. Doping SiAlON ceramics with Dy+3 cation leads to the formation of relatively homogenised final microstructure. Therefore, higher IR transmission values were observed on Dy-α-SiAlON (42.2%) and Dy-α/β-SiAlON (45.07%) samples.

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来源期刊

International Journal of Microstructure and Materials Properties Materials Science-Materials Science (all)

CiteScore

0.70

自引率

0.00%

发文量

期刊介绍： IJMMP publishes contributions on mechanical, electrical, magnetic and optical properties of metal, ceramic and polymeric materials in terms of the crystal structure and microstructure. Papers treat all aspects of materials, i.e., their selection, characterisation, transformation, modification, testing, and evaluation in the decision-making phase of product design/manufacture. Contributions in the fields of product, design and improvement of material properties in various production processes are welcome, along with scientific papers on new technologies, processes and materials, and on the modelling of processes.