Copper matrix composite

Fig. 4.19. Fiber pull-out stress as a function of embedded fiber length, /./2a, for a tungsten wire embedded copper matrix composite system. Open symbols for pulled-out specimens solid symbols for fractured specimens. After Kelly and Tyson (1965).

Ni-Al203 no effect of the temperature on the particle composite content was found.11,16 On the other hand a continuos decrease of the particle content of copper matrix composite deposition57 and a continuous increase of TiC incorporation in nickel23 with increasing temperature have been reported. A maximum particle composite content at 50 °C was observed for Ni-PTFE,69 Ni-V2C>536 and Ni-BN.17 In a like manner a limiting particle incorporation in Cr above 50 °C preceded by either an increase66 or a decrease46 below this temperature was found. 

LePetitcorps Y, Poueylaud JM, Albingre L, Berdeu B, Lobstein P, Silvain JF, Carbon fiber reinforced copper matrix composites, processing routes and properties. Key Eng Mater, 127(1,2), 327-334, 1997. 

Korb G, Korab J, Groboth G, Thermal expansion behaviour of unidirectional carbon-fiber reinforced copper-matrix composites, Composites Part A-Appl Sci Manuf, 29(12), 1563-1567, 1998. 

Bozic, D., Cvijovic-Alagic, 1., Dimcic, B., Stasic, J., Rajkovic, V., 2009. In-situ processing of TiB2 nanoparticle-reinforced copper matrix composites. Science of Sintering 41,143—150. 

Reinforcement for metal-matrix composites with such metals as titanium, titanium aluminide, aluminum, magnesium, and copper. Applications are found mostly in advanced aerospace programs and include fan blades, drive shafts, and other components. 

Cobalamin, 25 803 folic acid and, 25 802 Cobalt (Co), 7 207-228. See also Co-base superalloys 60Co isotope 60Co nucleus Fe-Ni-Co alloys Dicobalt octacarbonyl Tetracobalt dodecacarbonyl analysis, 7 215-216 in ceramic-matrix composites, 5 554t coke formation on, 5 266 colloidal suspensions, 7 275 economic aspects, 7 214-215 effect on copper resistivity, 7 676t environmental concerns, 7 216 health and safety factors, 7 216-218 in M-type ferrites, 11 66, 69 occurrence, 7 208... 

Often there is a borrowing of terms between metal-intense materials science and polymer-intense materials science where there is actually little relationship between the two. This is not the case with metal-matrix composites (MMCs). Although the materials are often different, there are a number of similarities. For polymer-intense composites, the matrix materials are organic polymers. For MMCs, the matrix materials are typically a metal or less likely an alloy. Popular metals include aluminum, copper, copper-alloys, magnesium, titanium, and superalloys. ... 

Metals and ceramics (claylike materials) are also used as matrices in advanced composites. In most cases, metal matrix composites consist of aluminum, magnesium, copper, or titanium alloys of these metals or intermetallic compounds, such as TiAl and NiAl. The reinforcement is usually a ceramic material such as boron carbide (B4C), silicon carbide (SiC), aluminum oxide (A1203), aluminum nitride (AlN), or boron nitride (BN). Metals have also been used as reinforcements in metal matrices. For example, the physical characteristics of some types of steel have been improved by the addition of aluminum fibers. The reinforcement is usually added in the form of particles, whiskers, plates, or fibers. 

The nearly colorless glass fragment (object 1) has essentially the matrix composition. The slight green tint probably comes from the very small amounts of iron, copper, and manganese oxides present. 

When sparks are used for the ablation of electrically conducting solids, less changes with variations in the matrix composition than in the case of arc ablation occur. This is due to the fact that thermal volatilization plays less of a role. However, in the case of brass, it is seen from x-ray analyses of the ablated material on a Nudepore filter, for samples of the crater wall and the burning crater, that zinc volatilizes more than copper (Table 5), which makes the method difficult to apply to these samples. 

Metal-matrix composites using TiC as the reinforcing phase have also been used as tool materials for copper alloys (Ref 26). Both sintered TiC Ni W and hipped TiC Ni Mo alloys were used to friction stir copper alloys. However, both TiC-containing alloys produced brittle tools that fractured during the tool plunge. 

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