Compressive and wear resistance of nanometric alumina reinforced copper matrix composites

Fathy, A.; Shehata, F.; Abdelhameed, Magdy M.; Elmahdy, M.

doi:10.1016/j.matdes.2011.10.021

Cited by 156 publications

(69 citation statements)

References 27 publications

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“…The relative intensity of the CuAlO 2 diffraction peaks vary substantially as compared to the reference powder spectra shown in figure 1 (a) (11)(12)(13)(14)(15)(16)(17)(18)(19)(20). 25 In this work, the polycrystalline Al 2 O 3 substrates used have x-ray 15 reflections corresponding to both the (0001) and (11)(12)(13)(14)(15)(16)(17)(18)(19)(20) planes and these are used in conjunction with CuO thereby satisfying conditions identified in previous work for both CuAl 2 O 4 and CuAlO 2 formation. However, our results in figure 4 below show that, post annealing, only a very small fraction of the films are in 20 the spinel phase.…”

Section: Cualo 2 Thick Filmsmentioning

confidence: 90%

Dellafossite CuAlO2 film growth and conversion to Cu–Al2O3 metal ceramic composite via control of annealing atmospheres

et al. 2013

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In this work we demonstrate simple techniques to form well crystallised CuAlO 2 powders and thick films from CuO and boehmite or alumina, using a novel molten salt painting process. We examine the formation mechanism using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray 15 spectroscopy and in situ high temperature X-ray diffraction and find that the annealing atmosphere plays a critical role. From this we develop a method to create Cu-Al 2 O 3 conductive metal-ceramic composite materials with novel morphologies via the thermal decomposition of CuAlO 2 precursor films.

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Section: Cualo 2 Thick Filmsmentioning

confidence: 90%

Dellafossite CuAlO2 film growth and conversion to Cu–Al2O3 metal ceramic composite via control of annealing atmospheres

et al. 2013

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“…However, poor adhesion to widely used reinforcements, chemical reactions at interfaces, and quick oxidization of Cu can create serious problems with the formation of the strong bonds at the interface between composite components (Ref 4,5). Copper matrix composites with different ceramic reinforcements (AlN, SiC, C, Al 2 O 3 ) are extensively used in aerospace industry in products that are subjected to severe thermal and mechanical loadings such as rocket thrusters and components in aircraft engines (Ref 6,7).…”

Section: Introductionmentioning

confidence: 99%

The Influence of Al2O3 Powder Morphology on the Properties of Cu-Al2O3 Composites Designed for Functionally Graded Materials (FGM)

Strojny-Nędza

Pietrzak

Węglewski

2016

J. of Materi Eng and Perform

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In order to meet the requirements of an increased efficiency applying to modern devices and in more general terms science and technology, it is necessary to develop new materials. Combining various types of materials (such as metals and ceramics) and developing composite materials seem to be suitable solutions. One of the most interesting materials includes Cu-Al 2 O 3 composite and gradient materials (FGMs). Due to their potential properties, copper-alumina composites could be used in aerospace industry as rocket thrusters and components in aircraft engines. The main challenge posed by copper matrix composites reinforced by aluminum oxide particles is obtaining the uniform structure with no residual porosity (existing within the area of the ceramic phase). In the present paper, Cu-Al 2 O 3 composites (also in a gradient form) with 1, 3, and 5 vol.% of aluminum oxide were fabricated by the hot pressing and spark plasma sintering methods. Two forms of aluminum oxide (aAl 2 O 3 powder and electrocorundum) were used as a reinforcement. Microstructural investigations revealed that near fully dense materials with low porosity and a clear interface between the metal matrix and ceramics were obtained in the case of the SPS method. In this paper, the properties (mechanical, thermal, and tribological) of composite materials were also collected and compared. Technological tests were preceded by finite element method analyses of thermal stresses generated in the gradient structure, and additionally, the role of porosity in the formation process of composite properties was modeled. Based on the said modeling, technological conditions for obtaining FGMs were proposed.

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“…The studies on copper-alumina MMC along with their properties have been carried out by several groups [17][18][19][20]. Fathy et al [17] have demonstrated improvement in compressive strength, hardness and wear resistance of Cu-Al 2 O 3 system, Ritasalo et al [18] have reported hardness value of 1.58 GPa of SPS sintered Cu-Al 2 O 3 composite. The increase in arc erosion resistance of Cu-Al 2 O 3 with the increase in alumina content has been reported by Wang et al [19].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of copper–alumina metal matrix composite by conventional and spark plasma sintering

Dash

Ray

Chaira

2012

Journal of Alloys and Compounds

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Compressive and wear resistance of nanometric alumina reinforced copper matrix composites

Cited by 156 publications

References 27 publications

Dellafossite CuAlO2 film growth and conversion to Cu–Al2O3 metal ceramic composite via control of annealing atmospheres

Dellafossite CuAlO2 film growth and conversion to Cu–Al2O3 metal ceramic composite via control of annealing atmospheres

The Influence of Al2O3 Powder Morphology on the Properties of Cu-Al2O3 Composites Designed for Functionally Graded Materials (FGM)

Synthesis and characterization of copper–alumina metal matrix composite by conventional and spark plasma sintering

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