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alumina fibers

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Published: 01 June 2008
Fig. 33.7 Saffil alumina fiber preform More
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Published: 01 November 2010
Fig. 20.11 Saffil alumina fiber preform More
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Published: 01 October 2012
Fig. 9.13 Saffil alumina fiber preform More
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Published: 01 October 2012
Fig. 11.22 Unidirectional alumina-fiber/glass-matrix composite formed by slurry infiltration followed by hot pressing. (a) Light micrograph of transverse section (some porosity can be seen in this micrograph). (b) Pressure and temperature schedule used during hot pressing of this composite More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240607
EISBN: 978-1-62708-251-8
... μm (4.0 to 5.5 mils) in diameter, and are made one filament at a time by chemical vapor deposition on a small substrate, normally tungsten wire or carbon fiber. Discontinuous reinforcements are mainly silicon carbide whiskers (SiC w ); particles (p) of silicon carbide (SiC p ), alumina (Al 2 O 3...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030043
EISBN: 978-1-62708-349-2
.... Alumina may be used to polish most composites with fiber hardness less than that of alumina. The deagglomerated alumina powders can be purchased in many sizes, but composites can be efficiently rough polished using only two or three sizes, as mentioned previously. In some literature, fine polishing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550457
EISBN: 978-1-62708-307-2
... the AA-registered alloy 2124 reinforced with 25 vol% of silicon carbide whiskers; 7075/Al 2 O 3 /10p is the AA-registered alloy 7075 reinforced with 10 vol% of alumina particles; 6061/SiC/47f is the AA-registered alloy 6061 reinforced with 47 vol% of continuous SiC fibers; and A356/C/05c is an AA...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870573
EISBN: 978-1-62708-314-0
... such as alumina, or nonoxide fibers such as silicon carbide, are used in glass, glass-ceramic, and crystalline ceramic matrices. Most high-performance oxide and nonoxide continuous fibers are expensive, further increasing the high cost of ceramic matrix composites. The cost and great difficulty of consistently...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030067
EISBN: 978-1-62708-349-2
... Abstract The most common methods for preparing polymeric composites for microscopic analysis can be used for most fiber-reinforced composite materials. There are, however, a few composite materials that require special preparation techniques. This chapter discusses the processes involved...
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Published: 01 August 2005
Fig. 4.42 Joint strength measured in shear for alumina brazed to stainless steel using an active braze as a function of the joint (braze) thickness and loading of the braze with chopped carbon fiber. Carbon fiber content in volume percent More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870537
EISBN: 978-1-62708-314-0
... or monofilament fibers. Fig. 20.1 Metal matrix composite reinforcements. Source: Ref 1 Discontinuous reinforcements consist mainly of silicon carbide (SiC) in whisker (w) form; particulate (p) types of SiC, alumina (Al 2 O 3 ), and titanium diboride (TiB 2 ); and short or chopped fibers (c) of Al...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550569
EISBN: 978-1-62708-307-2
... continuous fiber CMCs are designed for applications where high thermal conductivity, low thermal expansion, light weight, and good corrosion and wear resistance are required. Alumina-matrix continuous fiber CMCs are better in applications where a high tolerance to salt corrosion, molten glass, or oxidation...
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Published: 30 April 2020
Fig. 11.2 Two examples of alignment in powder-binder systems. (a) Whiskers in a sintered alumina matrix. (b) Fibers in a sintered nickel aluminide matrix More
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Published: 01 November 2010
Fig. 3.17 Bright-field illumination (25× objective) of a composite specimen after final alumina polish. Note the interferometer bands on the longitudinal fibers. This is one way to check the uniformity of the polishing plane. More
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290251
EISBN: 978-1-62708-319-5
... are added to the powder-binder formulation. The fibers are selected to add strength after sintering. Demonstrations of aligned-fiber composites include matrix phases of alumina, silicon nitride, stainless steel, and intermetallic compounds. Two images in Fig. 11.2 illustrate alignment. Figure 11.2...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030115
EISBN: 978-1-62708-349-2
... Abstract Transmitted-light methods reveal more details of the morphology of fiber-reinforced polymeric composites than are observable using any other available microscopy techniques. This chapter describes the various aspects relating to the selection and preparation of ultrathin-section...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870031
EISBN: 978-1-62708-314-0
... shapes and is very difficult to machine. Other high-temperature ceramic fibers, such as silicon carbide (Nicalon), aluminum oxide, and alumina boria silica (Nextel), are frequently used in ceramic-based composites but rarely in polymer-based composites. The stress-strain curves in Fig. 2.2 show...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550001
EISBN: 978-1-62708-307-2
... particles/aluminum. (e) SCS-6 silicon carbide fiber/titanium. (f) Alumina reinforced with 25% SiC whiskers. (g) Bend strength. (h) Woven SiC/SiC 1.2 Aluminum Alloys Aluminum alloys have many outstanding attributes that lead to a wide range of applications, including: Good...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550621
EISBN: 978-1-62708-307-2
...-fiber polymer-matrix composites are replacing these alloys. In addition, aluminum alloys are not embrittled at low temperatures and become even stronger as the temperature is decreased without significant ductility losses, making them ideal for cryogenic fuel tanks for rockets and launch vehicles. High...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060223
EISBN: 978-1-62708-343-0
... mm, or 0.008 in.), and their stiffness (modulus, E ), yield strength (σ ys ), and ultimate strength (σ ul ) are greater than the matrix material. Fibers are metallic (e.g., tungsten) or nonmetallic (e.g., silicon carbide, alumina, sapphire). Metal fibers are denser than their matrices and exhibit...