Material homogenization of metal-ceramic composites by NTFA

2013 ◽  
Author(s):  
E. Schnack ◽  
Y. Zhu ◽  
A. M. Rahman
Keyword(s):  
Ceramic Composites ◽  
Metal Ceramic

scholarly journals Tough metal-ceramic composites with multifunctional nacre-like architecture

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Erik Poloni ◽  
Florian Bouville ◽  
Christopher H. Dreimol ◽  
Tobias P. Niebel ◽  
Thomas Weber ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Sol Gel ◽  
Ceramic Composites ◽  
High Fracture Toughness ◽  
Processing Route ◽  
High Fracture ◽  
Metal Ceramic ◽  
Attractive Option ◽  
Brick And Mortar ◽  
Robotic Applications

AbstractThe brick-and-mortar architecture of biological nacre has inspired the development of synthetic composites with enhanced fracture toughness and multiple functionalities. While the use of metals as the “mortar” phase is an attractive option to maximize fracture toughness of bulk composites, non-mechanical functionalities potentially enabled by the presence of a metal in the structure remain relatively limited and unexplored. Using iron as the mortar phase, we develop and investigate nacre-like composites with high fracture toughness and stiffness combined with unique magnetic, electrical and thermal functionalities. Such metal-ceramic composites are prepared through the sol–gel deposition of iron-based coatings on alumina platelets and the magnetically-driven assembly of the pre-coated platelets into nacre-like architectures, followed by pressure-assisted densification at 1450 °C. With the help of state-of-the-art characterization techniques, we show that this processing route leads to lightweight inorganic structures that display outstanding fracture resistance, show noticeable magnetization and are amenable to fast induction heating. Materials with this set of properties might find use in transport, aerospace and robotic applications that require weight minimization combined with magnetic, electrical or thermal functionalities.

Processing and Elastic Property Characterization of Porous SiC Preform for Interpenetrating Metal/Ceramic Composites

2012 ◽  
Vol 95 (10) ◽  
pp. 3078-3083 ◽  
Author(s):  
Siddhartha Roy ◽  
Karl Günter Schell ◽  
Ethel Claudia Bucharsky ◽  
Pascal Hettich ◽  
Stefan Dietrich ◽  
...  
Keyword(s):  
Elastic Property ◽  
Ceramic Composites ◽  
Metal Ceramic ◽  
Porous Sic ◽  
Property Characterization

Sol-gel control of the micro/nanostructure of functional ceramic-ceramic and metal-ceramic composites

1998 ◽  
Vol 13 (4) ◽  
pp. 803-811 ◽  
Author(s):  
Philippe Colomban
Keyword(s):  
Sol Gel ◽  
Ceramic Composites ◽  
Matrix Interface ◽  
Specific Chemical ◽  
Fine Powders ◽  
Metal Ceramic ◽  
Long Life ◽  
Fiber Matrix Interface ◽  
3D Composite ◽  
Functional Ceramic

The problems encountered to tailor simultaneously various specific chemical or physical properties are discussed. Selected polymeric precursors used in association with fine powders allow the control of the nano/microstructure of composites and hence the preparation of functional (FGM) and hierarchical reinforced (HRC) composites, making it possible to combine several kinds of fibers, interphases, and matrices in the same composite (hot microwave absorbent), to control the fiber/matrix interface (long life times composites), to achieve net-shape sintering of 3D composite matrices, and to prepare thick films of metal-ceramic composites with tailored microwave absorption (radar stealthiness).

Analysis of multiple cracking in metal/ceramic composites with lamellar microstructure

2015 ◽  
Vol 86 (1-2) ◽  
pp. 177-188 ◽  
Author(s):  
M. Kashtalyan ◽  
Y. Sinchuk ◽  
R. Piat ◽  
I. Guz
Keyword(s):  
Lamellar Microstructure ◽  
Ceramic Composites ◽  
Multiple Cracking ◽  
Metal Ceramic

Design of metal ceramic composites

2006 ◽  
Vol 97 (5) ◽  
pp. 676-680 ◽  
Author(s):  
Ilka T. Lenke ◽  
Dirk Rogowski
Keyword(s):  
Ceramic Composites ◽  
Metal Ceramic

Functionally graded metal/ceramic composites by tape casting, lamination and infiltration

1999 ◽  
Vol 262 (1-2) ◽  
pp. 192-203 ◽  
Author(s):  
S.F. Corbin ◽  
X. Zhao-jie ◽  
H. Henein ◽  
P.S. Apte
Keyword(s):  
Tape Casting ◽  
Ceramic Composites ◽  
Functionally Graded ◽  
Metal Ceramic

scholarly journals Oxidative photo-catalytic destruction of eosine with the application of iron-contalning metal-ceramic composites with additive complex-forming reagents

2019 ◽  
Vol 60 (11) ◽  
pp. 21-30
Author(s):  
Anna А. Damzina ◽  
◽  
Lidia N. Skvortsova ◽  
Konstantin A. Bolgaru ◽  
◽  
...  
Keyword(s):  
Tartaric Acid ◽  
Diffraction Method ◽  
Ceramic Matrix ◽  
Homogeneous System ◽  
Ceramic Composites ◽  
Acid Sites ◽  
Complexing Agents ◽  
Oxidative Destruction ◽  
Indicator Method ◽  
Metal Ceramic

Iron-containing metal-ceramic composites based on nitrogen and sialon nitrides, obtained by the method of self-propagated synthesis were studied in the process of photocatalytic oxidative destruction of eosin. The phase composition of the samples was established by the X-ray diffraction method. It was shown that, along with the main phases, the ceramic matrix of materials contains the phases of semiconductors: (SiC, TiN). The indicator method of Hammet and Tanabe assessed the surface acid-base centers of the composites. It was established that a large sorption of the dye is characteristic of samples based on silicon nitride and sialon and is associated with the participation of active Brensted acid sites. The photocatalytic activity of iron-containing composites was studied in the presence of H2O2 (photo-Fenton system), H2O2 and EDTA (peroxide-ferriccomplexon system), H2O2 and tartaric acid (peroxide-ferritartrate system). It was shown that the degree of oxidative destruction of eosin is significantly higher with the participation of Fe(II, III) complexes with EDTA and tartaric acid, than Fe(II, III) aquacomplexes in the photo-Feton system. The high activity of composites containing the semiconductor phase of titanium nitride (TiN) is due to the combination of homogeneous and heterogeneous catalysis with the participation of the ceramic matrix. The introduction of complexing agents shifts the optimal acidity (pH 2-4) for a homogeneous system of photo-Fenton with the participation of iron(II, III) aqua complexes in the weakly acidic region (pH 4-7) and leads to almost complete destruction of the dye in the peroxide-tartrate system.

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