
	Where results make sense

Topic: Metal matrix composite

	Metal matrix composite - Wikipedia, the free encyclopedia
		A metal matrix composite (MMC) is a type of composite material with at least two constituent parts, one being a metal.
		The matrix is usually a lighter metal such as aluminum, magnesium, or titanium, and provides a compliant support for the reinforcement.
		Because the fibers are embedded into the matrix in a certain direction, the result is an anisotropic structure in which the alignment of the material affects its strength.
	en.wikipedia.org /wiki/Metal_matrix_composite (755 words)

	2index.htm / what are mmc's
		Composite: A composite (or composite material) is defined as a material that consists of at least two constituents (distinct phases or combinations of phases) which are bonded together along the interface in the composite, each of which originates from a separate ingredient material which pre-exists the composite.
		Hybrid composite: a composite that consists of at least three (as opposed to two) constituents (distinct phases or combinations of phases) which are bonded together at the atomic level in the composite, each of which originates from a separate ingredient material which pre-exists the composite (i.e., there are, at least three ingredient materials).
		Cellular metals (metal foams): similar to MMC as they are often formed by combining two separate ingredients yielding a metal matrix and the second constituent being the gas in closed or open pores: however, there is no clear bond between the gas phase and the matrix.
	mmc-assess.tuwien.ac.at /2index.htm (988 words)

	[No title] (Site not responding. Last check: 2007-11-04)
		It is shown that the tensile flow stress and strain hardening response of whisker-reinforced composites are strongly influenced by the geometrical arrangement of the whiskers in the metallic matrix.
		In continuous fiber composites, both elastic and plastic deformation responses under tensile and shear loading transverse to the fiber orientation are strongly affected by the arrangement of the fibers (for a fixed volume fraction), although the longitudinal response is insensitive to fiber distribution.
		Metal matrix composites are distinguished from the more extensively developed resin matrix composites by virtue of their metallic nature in terms of physical and mechanical properties and by their ability to lend themselves to conventional metallurgical processing operations.
	doc.tms.org /servlet/ProductCatalog?category=04-0002 (2900 words)

	[No title] (Site not responding. Last check: 2007-11-04)
		The presence of additives in a compact during sintering is generally known to reduce thermal conductivity of a copper/refractory metal composite because residual additives tend to alloy with the copper during sintering.
		Composites of the present invention having a P/Co ratio within the range of preferred P/Co ratios have a thermal conductivity which is greater than or equal to the thermal conductivity of similar composites containing the same amount of copper and cobalt but no phosphor and the remainder is refractory metal.
		The copper/refractory metal matrix composite of claim 1 wherein the refractory metal is selected from the group consisting of tungsten, molybdenum, chromium, iridium, osmium, tantalum, niobium, ruthenium, rhenium, rhodium, hafnium, zirconium and mixtures thereof.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=01/87521.011122&ELEMENT_SET=DECL (5976 words)

	[No title] (Site not responding. Last check: 2007-11-04)
		Aluminum matrix composites reinforced with ceramics such as silicon carbide in particulate, platelet, or whisker form, for example, are of interest because of their higher stiffness, wear resistance and high temperature strength relative to aluminum.
		This MMC layer is attached metallurgically to the metal matrix composite substrate material--namely, the infiltrated permeable mass or preform.
		Further, the wetting of the filler by molten matrix metal may permit a uniform dispersion of the filler throughout the formed metal matrix composite body and improve the bonding of the filler to the matrix metal.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=99/31958.991111&ELEMENT_SET=DECL (8832 words)

	[No title] (Site not responding. Last check: 2007-11-04)
		The solidification science of cast metal matrix composites (MMC) evolved as a subset of the broad field of solidification of monolithic alloys pioneered by Merton Flemings and his students.
		Metal Matrix Composite (MMC) materials provide combinations of properties which are of interest in several applications within the transportation industries.
		Specific applications of MMCs are then described and used as "case studies" for a discussion of fundamental and technical issues in MMC solidification processing as it concerns these industries.
	doc.tms.org /servlet/ProductCatalog?category=04-0004 (2304 words)

	Metal Matrix Composite Driveshaft (Site not responding. Last check: 2007-11-04)
		The MMC shaft eliminated the vibration problem for me. The MMC shaft must also be installed with the longer tailshaft extension housing in order to properly support it.
		The MMC shaft is a bit shorter than the stock steel shaft and needs to have the shaft bushing relocated further back by using the longer extension housing.
		When you install the MMC shaft and/or the steel shaft, it's important that you line up the yellow dots on the driveshaft to the yellow dot on the pinion flange and the paint mark on the transmission output shaft.
	www.shizzot.com /shaft.htm (767 words)

	American Metal Market: Metal matrix composite producers anticipate boom
		NEW YORK--The market for metal matrix composites is still in its infancy, but producers are pouring resources into research and new capacity in order to meet an anticipated boom.
		DWA Composite Specialties produces an aluminum matrix composite it calls DWAL 20 Super Aluminum.
		However, metal matrix composites are in the group's bylaws as a targeted material so it is time to reach out, the spokesman said.
	www.findarticles.com /p/articles/mi_m3MKT/is_n232_v96/ai_6851852 (941 words)

	ACOUSTIC EMISSION CHARACTERIZATION OF SINGLE FIBER REINFORCED METAL MATRIX COMPOSITE (Site not responding. Last check: 2007-11-04)
		Metal matrix composites (MMCs) are currently receiving a great deal of attention due to high modulus and strength, wear resistence and thermal stability, which make them very attractive for use in automotive and aerospace industry.
		Interfacial shear strength (IFSS) between fiber and matrix is one of the most important factors in characterizing the mechanical properties of fiber reinforced composites.
		First two groups are associated with matrix cracking and partial fiber debonding and the third group is mainly attributed by fiber breakage.
	www.ndt.net /abstract/wcndt96/data2/283.htm (378 words)

	Metal-Matrix Composites for Space Applications
		Organic-matrix composites continued to successfully address the system-level concerns related to microcracking during thermal cycling and radiation exposure, and electromagnetic interference (EMI) shielding; MMCs are inherently resistant to those factors.
		The first successful application of continuous-fiber reinforced MMC has been the application of B/Al tubular struts used as the frame and rib truss members in the mid-fuselage section, and as the landing gear drag link of the Space Shuttle Orbiter (Figure 1).
		The major application of Gr/Al composite is a high-gain antenna boom (Figures 2a and 2b) for the Hubble Space Telescope made with diffusion-bonded sheet of P100 graphite fibers in 6061 Al.
	www.tms.org /pubs/journals/JOM/0104/Rawal-0104.html (2528 words)

	Fibernide is your sole source for nickel aluminide foams, sinters, and carbon fiber composites
		FiberNide is a metal matrix composite material, consisting of continuous carbon fiber in a nickel aluminide matrix.
		In this state the fibers are still loose and drapable and are analogous to conventional composite prepreg.
		A metal matrix composite is formed with a strength of around 800 MPa and a modulus of 115 GPa with a density of around 3.9 g/cc.
	www.fibernide.com /carbon.html (376 words)

	Effects of Control Mode and R-Ratio on the Fatigue Behavior of a Metal Matrix Composite
		Because of their high specific stiffness and strength at elevated temperatures, continuously reinforced metal matrix composites (MMC's) are under consideration for a future generation of aeropropulsion systems.
		However, the composite had a strain limitation at short lives because of the limited strain capacity of the brittle ceramic fiber.
		The composite also suffered at very high lives because of the lack of an apparent fatigue limit in comparison to the unreinforced matrix.
	www.grc.nasa.gov /WWW/RT1995/5000/5220l2.htm (582 words)

	Metal Matrix Composite Materials (Site not responding. Last check: 2007-11-04)
		Certain metal matrix composites now allow the designer to select needed material properties over a fairly large range (thermal expansion, conductivity and material strength for example).
		The thrust into this industry was pioneered by materials companies who had manufactured the composite materials in casting ingot or extrusion billet form.
		This is important as it now gives the designer the ability to vary the overall material composition and localized performance anywhere within a complex thermal structure.
	www.aavidthermalloy.com /technical/papers/matrix.shtml (968 words)

	Carolite : Metal Matrix Composite (Site not responding. Last check: 2007-11-04)
		arolite® is a metal matrix composite (MMC) of silicon hexaboride and aluminum.
		This new, innovative MMC has a significant advantage over other MMC's because in the molten state, the silicon hexaboride reinforcement material has a specific gravity nearly identical to the molten metal.
		nlike other MMC's, the density of the composite decreases with increased loading of the silicon hexaboride reinforcement.
	www.millenmat.com /mmihexon.htm (164 words)

	Advanced Material_3 (Site not responding. Last check: 2007-11-04)
		Although the CTE of this composite does not fall in the desired range of 4-7 PPM/K, it is much closer to it than those of aluminum and copper.
		MMCs consisting of continuous and discontinuous thermally conductive carbon fibers are also being employed in packaging and thermal management applications.
		Other MMCs with high thermal conductivities are made by infiltrating porous carbon/carbon composites and fibrous carbon fiber preforms or felts with aluminum or copper.
	www.coolingzone.com /Guest/News/NL_OCT_2001/Carl/Oct_CZ_2001.html (1934 words)

	Title page for ETD etd-05212003-205819
		Composite systems that were predicted to exhibit the greatest level of damping capacity include copper, aluminum, and magnesium matrices reinforced with PbTiO3, BaTiO3, and ZnO, in descending order of damping magnitude.
		In general, higher-conducting, lower-stiffness metallic matrices coupled with more-piezoelectric, higher-stiffness ceramic reinforcement resulted in the greatest level of predicted damping capability and enhanced composite elastic modulus.
		Separate composite powder samples were then annealed in a hydrogen tube furnace at 400°C, 500°C, and 600°C for one and five hours at each temperature.
	scholar.lib.vt.edu /theses/available/etd-05212003-205819 (312 words)

	Expert in: Automotive Engineering Materials
		He is familiar with the advantages and disadvantages of existing techniques for commercial processing of metal matrix composites.
		Expert is actively engaged in research and development of processing techniques for commercial manufacture of short and long fiber ceramic reinforced aluminum matrix composites.
		Much of the research leading to his three patents in this area focused on conditions necessary to promote wetting of the fiber reinforcement by the matrix and the resulting interphase formed between the matrix and reinforcement.
	www.intota.com /viewbio.asp?bioID=605192&perID=712829 (765 words)

	Transverse Fatigue Response of a Metal Matrix Composite Under Strain-Controlled Mode at Elevated Temperature: Part ...
		The present paper is a continuation of Part I to investigate the transverse fatigue behavior of a unidirectional titanium-based metal matrix composite (MMC) (SCS-6/Ti-15-3) at elevated temperature.
		In Part I of this paper, fatigue tests were conducted under the strain-controlled mode, and a systematic microscopic evaluation was undertaken to identify the damage and deformation mechanisms.
		Combining the results obtained from this micromechanical analysis, and that obtained from the macroscopic response (that is, stress and modulus) and microscopic evaluation in Part I, the transverse fatigue response of the MMC was thoroughly characterized.
	www.astm.org /JOURNALS/COMPTECH/PAGES/66.htm (225 words)

	CV Andreas Mortensen english version
		Mortensen, "Solidification of Reinforced Metals", Proceedings of the 1989 joint TMS/ASM conference on Solidification of Metal Matrix Composites, P. Rohatgi Ed., TMS, Warendale, PA, 1990, pp.
		J.A. Isaacs and A. Mortensen, “Structure and Room-Temperature Deformation of Alumina Fiber Reinforced Aluminum”, Metall.
		V.J. Michaud and A. Mortensen, “Analysis of Shallow Cell Solidification in Metal Matrix Composites”, Acta Materialia, 44, 4553-4564, November 1996.
	lmm.epfl.ch /lmm/mortensen-ev.html (6596 words)

	Metal matrix composites (Site not responding. Last check: 2007-11-04)
		ACUN-5 is an international composites conference that incorporates polymer, metal and ceramic matrix composites.
		Design changes have also been considered and the use of new materials such as metal matrix composites and intermetallics.
		These materials have potential use in metal and ceramic matrix composites and have the advantage that they can overcome many of the problems encountered by using monolithic ceramic fibres.
	www.azom.com /SearchResults.asp?MaterialKeyWord=Metal+matrix+composites (427 words)

	[No title] (Site not responding. Last check: 2007-11-04)
		The realization of this potential however, requires concurrent developments in (1) a technology base for fabricating high temperature metal matrix composite structural components, (2) experimental techniques for measuring their thermal and mechanical characteristics, and (3) computational methods to predict their behavior.
		The composite properties are synthesized from the constituent instantaneous properties by making use of composite micromechanics and macromechanics.
		Factors which affect the behavior of the composite properties include the fabrication process variables, the fiber and matrix properties, the bonding between the fiber and matrix and/or the properties of the interphase between the fiber and matrix.
	www.nttc.edu /cosmic/abstracts/lew-15711.html (416 words)

	Technologies:metal matrix composites (Site not responding. Last check: 2007-11-04)
		The High Performance Metals Group at Triton Systems develops affordable lightweight metal matrix composite (MMC) materials for a variety of markets from electronic packaging to aerospace and the military.
		Working closely with our customers, our team has the expertise in metal matrix composite materials, design and process technology to rapidly develop a product from concept to prototyping to full production.
		HiPAC™ aluminum matrix composites (AMC) are reinforced with continuous fibers to provide very high strength and excellent fatigue behavior at both room and elevated temperatures.
	www.tritonsys.com /technologies/mmc.htm (383 words)

	Metal Matrix Composite has adjustable CTE value., CPS Corp.
		Metal Matrix Composite has adjustable CTE value., CPS Corp.
		CPS Corporation, the worldwide leader in the design and production of metal matrix composites, offers AlSiC (Aluminum Silicon Carbide), a metal matrix composite that provides highly reliable and cost-effective solutions for the housing, interconnection and thermal management of microelectronic, optoelectronic and power electronic devices.
		The CPS AlSiC near and net-shape fabrication process both produces the composite material and fabricates the product geometry, resulting in a cost-effective product and allowing rapid prototyping for high volume advanced thermal management solutions.
	news.thomasnet.com /fullstory/454010/1304 (551 words)

	(WO 99/31958) IMPROVED METHOD FOR MAKING A METAL MATRIX COMPOSITE BODY BY A SPONTANEOUS INFILTRATION PROCESS ... (Site not responding. Last check: 2007-11-04)
		In another embodiment, a reactive infiltrating atmosphere is provided concurrently with vapor-phase infiltration enhancer precursor under conditions whereby infiltration enhancer is deposited as a coating layer on one or more surfaces of the permeable mass or preform.
		A molten matrix metal is able to readily wet and infiltrate such a layer.
		The infiltrated layer also provides the formed MMC body with an MMC surface whose properties may be similar to or different from those of the underlying MMC body.
	wipo.int /cgi-pct/guest/getbykey5?KEY=99/31958.991111&ELEMENT_SET=DECL (342 words)

	Griffen Bikes - Metal Matrix Composite
		The material needed to be stiffer and stronger than aluminum, lighter than aluminum with no fatigue life.
		To achieve these results they developed a material - boron carbide ceramic metal matrix.
		They used boron carbide, the hardest known material next to a diamond.
	www.griffenbike.com /About/metalmatrixcomposte.htm (398 words)

	Titanium metal matrix composite - TiMMC (Site not responding. Last check: 2007-11-04)
		QinetiQ's TiMMC combines the strength and stiffness of steel, the strength/weight ratio of aluminium, the high temperature properties of nickel and the corrosion resistance of titanium.
		So it outperforms conventional metallic systems, from room temperature right up to 600 °C. And we are working on matrices that will operate at even higher temperatures.
		We optimise fibre, intermediate and composite manufacture to produce the strong and lightweight components the aviation industry needs.
	www.qinetiq.com /home/commercial/transport/aviation/materials_and_structures/titanium_metal_matrix_composite.html (296 words)

Try your search on: Qwika (all wikis)