The thermal shock behavior of alumina-copper composite

Lin, Wei; Shi, Jianlin; Lin, Ming-Tong; Chen, Hangrong; Yan, Dongsheng

doi:10.1016/s0025-5408(01)00549-9

Cited by 38 publications

(31 citation statements)

References 9 publications

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“…Studies of hot pressed metal particle toughened alumina matrices indicate that the composites behave in a similar manner to monolithic alumina except that the strengths are higher throughout (although only slightly in some cases) and that ∆T c is increased from 200°C to 300°C for alumina -5 vol% copper 34 and 450°C for alumina containing 20 vol% of coarse (11-12 µm) molybdenum particles 31 . Other alumina-molybdenum composites (containing 20 vol% fine (3 µm ) particles or 10 vol% (fine or coarse) particles also showed improvements over monolithic alumina, but not as marked as for the coarse 20 vol% composite.…”

Section: Wear and Thermal Shock Resistancementioning

confidence: 98%

“…). With alumina, nickel [16][17][18][19][20][21][22][23][24] , silver [25][26][27][28][29] , molybdenum [30][31][32] , copper 33,34 , iron [35][36][37] and to a lesser extent niobium 32,38 , chromium 39 and chromium-nickel 39 alloys were popular choices for the metal inclusions, as they offered the dual benefits of favourable properties and compatibility with the matrix.…”

Section: Micro-scale Ductile Particle Ceramic Matrix Compositesmentioning

confidence: 99%

See 1 more Smart Citation

Ductile particle ceramic matrix composites—Scientific curiosities or engineering materials?

Yeomans

2008

Journal of the European Ceramic Society

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Section: Wear and Thermal Shock Resistancementioning

confidence: 98%

Section: Micro-scale Ductile Particle Ceramic Matrix Compositesmentioning

confidence: 99%

Ductile particle ceramic matrix composites—Scientific curiosities or engineering materials?

Yeomans

2008

Journal of the European Ceramic Society

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“…The TSR of Al 2 O 3 ceramics can be improved by modelling various composites, for example, modifying Al 2 O 3 with MgO [4] or nano-sized ZrO 2 [5]. It has been reported that needle-like mullite crystals [6] or incorporation of aluminium nitride [7], tungsten carbide [8], titanium carbide [9], or metallic (e.g., iron [10], copper [11], or molybdenum [12]) particles improve the TSR of dense Al 2 O 3 . However, improvement of the TSR with oxidisable particles is not suitable for porous ceramics intended for use in the air atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Thermal shock resistance of porous Al2O3-mullite ceramics

Zaķe-Tiļuga

Švinka

et al. 2015

Ceramics International

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“…Some metal-ceramic composites can possess particularly interesting physical properties such as high thermal conductivity, high electric conductivity or special magnetic characteristics. Copper-based composites, doped with the ceramic phase, showing, among others, high resistivity to sudden temperature changes, high thermal conductivity as well as increased mechanical strength, belong to the materials with the abovementioned properties [1][2][3]. Because of these superior features, Cu-Al 2 O 3 composites have been used as resistance welding electrodes, lead frames, accelerators and electrical connectors [4,5].…”

Section: Introductionmentioning

confidence: 99%

Processing, Microstructure and Properties of Different Method Obtained Cu-Al2O3 Composites/ Wytwarzanie, Mikrostruktura I Właściwości Kompozytów Cu-Al2O3 Otrzymywanych Róznymi Technikami

Strojny-Nędza¹,

Pietrzak²

2014

Archives of Metallurgy and Materials

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WYTWARZANIE, MIKROSTRUKTURA I WŁAŚCIWOŚCI KOMPOZYTÓW Cu-Al 2 O 3 OTRZYMYWANYCH RÓŻNYMI TECHNIKAMIAlumina/copper composites are used where high thermal conductivity, high absorption and dissipation of heat, high resistance to thermal fatigue and good frictional wear resistance are required. The properties of these composites depend on a number of factors including the content, shape and distribution of the ceramic phase, the method of their obtaining, as well as the conditions under which they are obtained. All these variables have influence on mentioned properties and, in consequence, on the future applications of the final material. The aim of this paper was to develop Cu-Al 2 O 3 composites, processed using two techniques, namely sintering (of Cu /Al 2 O 3 high-energy mixed powders) and tape casting (of slurry of the following composition: 1, 3 and 5 vol.% of Al 2 O 3 phase; the remaining part: Cu). The compositions were determined taking into consideration the planned applications. The paper presents newly developed technologies, the results of both microstructure investigations as well as of the measurements of selected physical and mechanical properties (microhardness, wear resistance, thermal conductivity etc.) and contains the analysis of the influence of selected techniques and processing conditions on the properties and the interface morphology between ceramic and copper.Keywords: ceramic-metal composites, hot pressing, tape casting, microstructure, thermal properties Kompozyty na bazie miedzi znajdują zastosowanie tam, gdzie jest wymagane: wysokie przewodnictwo cieplne, wysoka absorpcja i rozpraszanie ciepła, wysoka odporność na zmęczenie cieplne i dobra odporność na zużycie ścierne. Właściwości tych kompozytów zależą od wielu czynników tj. zawartości, kształtu i rozkładu fazy ceramicznej w metalowej osnowie jak również od samego sposobu (warunków) ich wytwarzania. Celem niniejszej pracy było otrzymanie kompozytów Cu-Al 2 O 3 stosując dwie techniki: spiekania mieszaniny proszków pod ciśnieniem oraz odlewanie folii kompozytowych (tape casting), laminowanie oraz końcowe spiekanie otrzymanych materiałów. Ze względu na przyszłe zastosowania tych kompozytów (m.in. elementy w układach turbin w samolotach) wytypowane zostały następujące składy: 99% ob j. Cu-1% ob j. Al 2 O 3 , 97% ob j. Cu-3% ob j. Al 2 O 3 , 95% ob j. Cu-5% ob j. Al 2 O 3. W prezentowanej pracy przedstawiono dwie technologie otrzymania kompozytów na bazie miedzi. Przeprowadzone zostały badania mikrostruktury otrzymanych kompozytów ze szczególnym zwróceniem uwagi na możliwość pojawienia się warstwy przejściowej ceramika/metal. Przeprowadzone zostały również badania właściwości fizycznych (twardość, gęstość), badania właściwości cieplnych (dyfuzyjność cieplna, przewodnictwo cieplne) oraz badania właściwości mechanicznych (zużycie ścierne) otrzymanych kompozytów.

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The thermal shock behavior of alumina-copper composite

Cited by 38 publications

References 9 publications

Ductile particle ceramic matrix composites—Scientific curiosities or engineering materials?

Ductile particle ceramic matrix composites—Scientific curiosities or engineering materials?

Thermal shock resistance of porous Al2O3-mullite ceramics

Processing, Microstructure and Properties of Different Method Obtained Cu-Al2O3 Composites/ Wytwarzanie, Mikrostruktura I Właściwości Kompozytów Cu-Al2O3 Otrzymywanych Róznymi Technikami

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