Micro-fibres containing composites prepared by EPD

0465571 - ÚFM 2017 RIV GB eng J - Journal Article
Hadraba, Hynek - Chlup, Zdeněk - Drdlík, D. - Cihlář, J.
Micro-fibres containing composites prepared by EPD.
Journal of the European Ceramic Society. Roč. 36, č. 2 (2016), s. 365-371. ISSN 0955-2219. E-ISSN 1873-619X
R&D Projects: GA MŠMT(CZ) LQ1601; GA ČR(CZ) GA15-06390S
Institutional support: RVO:68081723
Keywords : Electrophoretic deposition * Zirconia * Fibres * Fibre reinforcement * Laminates
Subject RIV: JH - Ceramics, Fire-Resistant Materials and Glass
Impact factor: 3.454, year: 2016

Presented article summarises preparation of fibre reinforced alumina and alumina laminates containing zirconia micro-fibres. Electrophoretic deposition was performed from concentrated isopropanolic suspensions stabilised by monochloracetic acid containing mixture of alumina powder and certain amount of zirconia micro-fibres. A method for in-situ monitoring the deposition of alumina and zirconia micro-fibres mass was applied to control deposition kinetics. Two different approaches for composite deposition were applied: (i) electrophoretic deposition of powders mixture and (ii) electrophoretic co-deposition from sonicated suspension containing stabilization aid. Applying the optimised procedure the alumina laminates reinforced with zirconia fibres were prepared. The co-deposition of ceramic micro-fibres and powder led to the preparation of microstructures having unique orthogonal fracture properties. Developed laminate with layers created by zirconia micro-fibres in the alumina matrix seems to be the most promising. This type of material exhibited potential of the crack trapping and deflection even when very small amount of micro-fibres was used.
Permanent Link: http://hdl.handle.net/11104/0264086