Mechanical Behavior of Multilayered Nanoscale Metal-Ceramic Composites

2005 ◽  
Vol 7 (12) ◽  
pp. 1099-1108 ◽  
Author(s):  
X. Deng ◽  
N. Chawla ◽  
K. K. Chawla ◽  
M. Koopman ◽  
J. P. Chu
Keyword(s):  
Mechanical Behavior ◽  
Ceramic Composites ◽  
Metal Ceramic

scholarly journals Mechanical properties of wood-derived silicon carbide aluminum-alloy composites as a function of temperature

2008 ◽  
Vol 23 (6) ◽  
pp. 1732-1743 ◽  
Author(s):  
T.E. Wilkes ◽  
J.Y. Pastor ◽  
J. Llorca ◽  
K.T. Faber
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Aluminum Alloy ◽  
Mechanical Behavior ◽  
Load Transfer ◽  
Ceramic Composites ◽  
Metal Ceramic ◽  
Strength And Toughness

The mechanical behavior [i.e., stiffness, strength, and toughness (KIC)] of SiC Al–Si–Mg metal–ceramic composites (50:50 by volume) was studied at temperatures ranging from 25 to 500 °C. The SiC phase was derived from wood precursors, which resulted in an interconnected anisotropic ceramic that constrained the pressure melt-infiltrated aluminum alloy. The composites were made using SiC derived from two woods (sapele and beech) and were studied in three orthogonal orientations. The mechanical properties and corresponding deformation micromechanisms were different in the longitudinal (LO) and transverse directions, but the influence of the precursor wood was small. The LO behavior was controlled by the rigid SiC preform and the load transfer from the metal to the ceramic. Moduli in this orientation were lower than the Halpin–Tsai predictions due to the nonlinear and nonparallel nature of the Al-filled pores. The LO KIC agreed with the Ashby model for the KIC contribution of ductile inclusions in a brittle ceramic.

scholarly journals Oxide Bioceramic Composites in Orthopedics and Dentistry

2021 ◽  
Vol 5 (8) ◽  
pp. 206
Author(s):  
Piconi Corrado ◽  
Sprio Simone
Keyword(s):  
Mechanical Behavior ◽  
Hip Replacement ◽  
Ceramic Composites ◽  
Clinical Applications ◽  
Wide Field ◽  
Joint Replacements ◽  
Composite Systems ◽  
Third Phase ◽  
Main Component ◽  
Zirconia Toughened Alumina

Ceramic composites based on alumina and zirconia have found a wide field of application in the present century in orthopedic joint replacements, and their use in dentistry is spreading. The development of this class of bioceramic composites was started in the 1980s, but the first clinical applications of the total hip replacement joint were introduced in the market only in the early 2000s. Since then, several composite systems were introduced in joint replacements. These materials are classified as Zirconia-Toughened Alumina if alumina is the main component or as Alumina-Toughened Zirconia when zirconia is the main component. In addition, some of them may contain a third phase based on strontium exa-aluminate. The flexibility in device design due to the excellent mechanical behavior of this class of bioceramics results in a number of innovative devices for joint replacements in the hip, the knee, and the shoulder, as well in dental implants. This paper gives an overview of the different materials available and on orthopedic and dental devices made out of oxide bioceramic composites today on the market or under development.

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).

Sign in / Sign up

Export Citation Format

Share Document