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Open AccessArticle

Grain-Size Effects on Multi-Wire Slurry Sawing of Translucent Alumina Ceramics

1
Fraunhofer-Institut für Keramische Technologien und Systeme IKTS Dresden Gruna, Winterbergstr. 28, 01277 Dresden, Germany
2
Technische Universität Bergakademie Freiberg, Agricolastr. 17, 09599 Freiberg, Germany
*
Author to whom correspondence should be addressed.
Received: 7 September 2020 / Revised: 28 September 2020 / Accepted: 12 October 2020 / Published: 13 October 2020
The technology of multi-wire sawing is well established in the production of silicon wafers but can also be applied in the production of ceramic substrates. In this study, the influence of the Al2O3-grain size of the alumina ceramic on the efficiency of the multi-wire slurry process was investigated. The grain size of HIPed alumina ceramics was changed by heat treatment processes at 1350 °C and 1400 °C. A B4C slurry was used for the investigation of the cutting of high purity alumina ceramic. With increasing grain size of the ceramic, the efficiency of the sawing process increases. The analysis of the as-cut surface morphology of the substrates shows a change in material removal from trans- to intergranular micro-fracture with increasing grain size. Furthermore, grain coarsening leads to substrates with increased roughness values and reduced biaxial strength. View Full-Text
Keywords: multi-wire sawing; translucent alumina ceramics; microstructure; mechanical properties; material removal; bow of wire web multi-wire sawing; translucent alumina ceramics; microstructure; mechanical properties; material removal; bow of wire web
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MDPI and ACS Style

Schmidtner, L.; Herrmann, M.; Aneziris, C.G. Grain-Size Effects on Multi-Wire Slurry Sawing of Translucent Alumina Ceramics. Ceramics 2020, 3, 428-439. https://0-doi-org.brum.beds.ac.uk/10.3390/ceramics3040036

AMA Style

Schmidtner L, Herrmann M, Aneziris CG. Grain-Size Effects on Multi-Wire Slurry Sawing of Translucent Alumina Ceramics. Ceramics. 2020; 3(4):428-439. https://0-doi-org.brum.beds.ac.uk/10.3390/ceramics3040036

Chicago/Turabian Style

Schmidtner, Lea; Herrmann, Mathias; Aneziris, Christos G. 2020. "Grain-Size Effects on Multi-Wire Slurry Sawing of Translucent Alumina Ceramics" Ceramics 3, no. 4: 428-439. https://0-doi-org.brum.beds.ac.uk/10.3390/ceramics3040036

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