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reinforced alumina

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Published: 01 January 1993
Fig. 5 Topography of silicon carbide whisker-reinforced alumina surfaces to be joined. (a) Ground, R q of 0.35 μm (14 μin.). (b) Ground/polished, R q of 0.04 μm (1.6 μin.). 3000× More
Image
Published: 01 January 2000
Fig. 13 Rising R -curve of a SiC whisker reinforced alumina ceramic matrix composite (CMC), measured by the double cantilever beam technique. Adapted from Ref 67 More
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002126
EISBN: 978-1-62708-188-7
.... It presents a comprehensive discussion on the properties and composition of alumina-base tool materials, including alumina and titanium carbide, alumina-zirconia, and silicon carbide whisker reinforced alumina, and silicon nitride base tool materials. alumina carbide alumina-zirconia carbide ceramics...
Image
Published: 01 January 1993
Fig. 3 Effect of polishing interfacial area on strength of Cu-41Ag-3.5Sn-7Ti, at.%, brazement in silicon carbide whisker-reinforced alumina More
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001457
EISBN: 978-1-62708-173-3
... condition ( Ref 11 ). Examples of oxide-matrix composites toughened by the dispersion of a second phase or material include the transformation-toughened zirconias (TTZ) ( Ref 12 ), zirconia-toughened aluminas ( Ref 13 ), and silicon carbide whisker-reinforced alumina and mullite ( Ref 14 ). Examples...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003486
EISBN: 978-1-62708-195-5
... . Applications for Discontinuously Reinforced CMCs Discontinuous reinforcement involves the addition of particles, platelets, whiskers, or chopped fibers, typically to a polycrystalline ceramic, glass, or glass-ceramic matrix. From an application viewpoint, the most important matrix material is alumina (Al...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003359
EISBN: 978-1-62708-195-5
... Abstract For the reinforcement of metal-matrix composites, four general classes of materials are commercially available: oxide fibers based primarily on alumina and alumina silica systems, nonoxide systems based on silicon carbide, boron fibers, and carbon fibers. This article discusses the key...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003449
EISBN: 978-1-62708-195-5
...-temperature toughness values as high as 35 MPa m (31.8 ksi in. ) for an aluminum reinforced alumina ( Ref 29 ). However, use of metal particle reinforced CMCs is severely hampered by the temperature and oxidation limits of the metal reinforcement. Platelet Reinforced CMCs Ceramic...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001107
EISBN: 978-1-62708-162-7
... of these materials, intense research was generated to determined other toughening mechanisms (besides transformation toughening and dispersed-phase toughening) and alternative toughened-ceramic systems. Silicon Carbide Whisker (SiC<sub>w</sub>)-Reinforced Alumina Silicon carbide whisker (SiC w )-reinforced...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003357
EISBN: 978-1-62708-195-5
.... continuous-length ceramic fibers oxide fibers alumina-silica fibers alpha-alumina fibers nonoxide fibers beta-phase silicon carbide high-temperature ceramic-matrix composites CONTINUOUS-LENGTH CERAMIC FIBERS are commercially available in two general classes for the reinforcement of ceramic-matrix...
Image
Published: 01 January 2001
Fig. 2 Area fraction of reinforcement on the fatigue fracture surface of a SiC-reinforced MMC ( Ref 11 ) and Comral-85, a Micral-20- (mullite-alumina) ( Ref 25 ) reinforced MMC as a function of K max 2 More
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003352
EISBN: 978-1-62708-195-5
.... Ceramic fibers are polycrystalline. Oxide ceramic (e.g., silica-alumina and pure alumina) fibers and nonoxide ceramic (e.g., silicon carbide) fibers ( Ref 4 ) are used to reinforce CMCs and MMCs ( Ref 5 ). Value-in-Use In a PMC, the primary function of a reinforcing fiber is to increase...
Image
Published: 01 January 2001
Fig. 1 Initiation of fatigue microcracks in metal-matrix composites. (a) A fatigue microcrack initiated from a fractured Micral-20 (mullite-alumina) reinforcement particle in Comral- 85 (6061-20% Micral-20). Note that the reinforcement particle has fractured across its vertical equatorial More
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003468
EISBN: 978-1-62708-195-5
... ), but it has also been observed in alumina-reinforced composites ( Ref 12 ). In many cases, cracks are initiated from particle clusters ( Ref 5 , 7 , 8 , and 10 ). These typically act as a single, large particle as plastic flow of the matrix material within the cluster is heavily constrained. Also, in MMCs...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005339
EISBN: 978-1-62708-187-0
..., such as SiC, alumina silica, and the matrix can be a metal, such as aluminum, copper, titanium, or magnesium. Fig. 2 Classification of metal-matrix composites. (a) Aligned continuous fiber-reinforced composite. (b) Short fiber-reinforced composite. (c) Particulate composite Fiber-reinforced...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003063
EISBN: 978-1-62708-200-6
... with particle reinforcements to improve the toughness. Single-crystal Al 2 O 3 platelets typically have diameters ranging from 5 to 10 μm, thicknesses of 0.5 to 1 μm, and a hexagonal shape. Larger diameters are available, 10 to 15 μm and 15 to 25 μm. Alumina platelets have been used to reinforce Y 2 O 5...
Image
Published: 01 November 1995
Fig. 35 Flexural strength of unreinforced and carbon-fiber-reinforced lithia alumina-silica glass-ceramic as a function of temperature in an inert environment. Source: Ref 162 More
Image
Published: 01 January 2005
Fig. 1 Diameter of continuous-reinforcement range from 10 μm (a) microstructure of alumina fiber/aluminum metal-matrix composite (MMC) to 150 μm (b) SiC MF /Ti-15-3 MMC More
Image
Published: 01 January 2001
Fig. 4 Flat, nearly featureless fracture surface indicative of linear-elastic, very low energy absorbing stress-strain behavior (poor toughening behavior of CMCs); alumina (PRD-166) fiber reinforced glass-matrix composite. Source: Ref 5 More
Image
Published: 01 December 2004
Fig. 65 Hybrid Ti-6Al-4V carbon-reinforced polymer composite with arcing and heat damage from a lab-induced lightning strike. Note the heat-affected zone. The vertical line shows the original surface of the titanium fastener and the extent of intraply arcing. Because of its complex shape More