Topic
Ceramic matrix composite
About: Ceramic matrix composite is a research topic. Over the lifetime, 7807 publications have been published within this topic receiving 117020 citations.
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TL;DR: In this article, a theory for sintering of bimodal powders is applied to a composite where the matrix is either a glass or a ceramic, and the filler phase is assumed to be rigid and nonsintering.
Abstract: A recently developed theory for sintering of bimodal powders is applied to a composite where the matrix is either a glass or a ceramic. The filler phase is assumed to be rigid and nonsintering. It is shown that glass-matrix composites should have predictable sintering behavior which follows the rule of mixtures, but ceramic-matrix composites are expected to be more difficult to sinter, and their sintering behavior may deviate considerably from the rule of mixtures, even at low concentrations of the filler phase.
55 citations
Patent•
18 Nov 1975TL;DR: A silicon nitride based ceramic is formed of silicon oxide and at least two metal oxides of such a type that when the metal oxide are heated separately they form a spinel as mentioned in this paper.
Abstract: A silicon nitride based ceramic is formed of silicon nitride and at least two metal oxides of such a type that when the metal oxides are heated separately they form a spinel. Combination of said metal oxides and said silicon nitride as fine powders and sintering same at a specified temperature for a specified period of time results in a silicon nitride based ceramic having improved mechanical and chemical properties.
55 citations
TL;DR: In this article, the thermal conductivity of aluminum oxide nanocomposites reinforced with multiwalled carbon nanotubes (MWNT) was measured using the laser flash technique for temperatures between 251 and 3001C.
Abstract: Aluminum oxide nanocomposites reinforced with multiwalled carbon nanotubes (MWNT) were prepared by atmospheric plasma spraying of blended and spray-dried powders. Thermal conductivity was measured using the laser flash technique for temperatures between 251 and 3001C. An aluminum oxide—4 wt% MWNT nanocomposite prepared from the blended powder showed the highest conductivity, followed by aluminum oxide without nanotubes, 8 and 4 wt% MWNT composite prepared from spray-dried powder in that order. The thermal conductivity values obtained are rationalized taking into account the crystallite size, porosity, MWNT content, microstructure, and the interfaces and metastable c-Al2O3 content present in the nanocomposite.
55 citations
25 Mar 2003-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, a 2D plain-woven SiC fiber, called Tyranno-SA, was used as the reinforcement in several SiC/SiC composites, and the composites were fabricated by chemical vapor infiltration (CVI) process.
Abstract: A recently developed SiC fiber, Tyranno-SA (2D plain-woven), was used as the reinforcement in several SiC/SiC composites. The composites were fabricated by chemical vapor infiltration (CVI) process. The mechanical properties and fracture behaviors were investigated using three-point bending test. The Tyranno-SA fiber possesses rough fiber surface with pure SiC surface chemistry, which may result in strong fiber/matrix bonding and fiber sliding resistance. Various pyrolytic carbon (PyC) and SiC/PyC interlayer coatings were applied in the composites to modify the mechanical properties of the interface. The interlayers were deposited by isothermal CVI process. The test results revealed a close PyC layer dependence of the strength of the composites. The ultimate flexural strength (UFS) increased with the increasing of the PyC layer thickness up to 100 nm, and then, kept at similar level till 200 nm. The Tyranno-SA/SiC composites exhibited relatively high proportional limit stresses due mainly to the large Young's modulus of the fiber. Fiber pullouts were observed at the fracture surfaces of all the interlayered composites. Attractive promising was exhibited on further improvement of the mechanical properties of the composites through further improvement of the interfacial properties and the matrix densification process.
55 citations
TL;DR: In this article, the preparation procedure of the GdIG X :YIG 1−X ferrimagnetic ceramic matrix composite by mechanical alloying and calcinations is presented, and its properties by X-ray powder diffraction, infrared, Micro-Raman, 57 Fe Mossbauer spectroscopy and hysteresis loop measurements.
54 citations