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toughened ceramics

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550511
EISBN: 978-1-62708-307-2
.... This chapter describes the applications, properties, and behaviors of some of the more widely used structural ceramics, including alumina, aluminum titanate, silicon carbide, silicon nitride, zirconia, zirconia-toughened alumina (ZTA), magnesia-partially stabilized zirconia (Mg-PSZ), and yttria-tetragonal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610327
EISBN: 978-1-62708-303-4
... Abstract This chapter covers the fatigue and fracture behaviors of ceramics and polymers. It discusses the benefits of transformation toughening, the use of ceramic-matrix composites, fracture mechanisms, and the relationship between fatigue and subcritical crack growth. In regard to polymers...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540297
EISBN: 978-1-62708-309-6
... applications that utilize their hardness, wear resistance, refractoriness, and high compression strength. They are seldom used in tensile-loaded structures, because they are brittle (with minimal ductility) and very sensitive to stress raisers. (However, ceramics may be toughened with a more ductile second...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550569
EISBN: 978-1-62708-307-2
... CMCs are designed for enhanced toughness, with little change in strength relative to the monolithic ceramic. In addition, it is important to recognize that while these various toughening mechanisms are active at low to intermediate temperatures, almost all of them can be predicted to degrade during...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030001
EISBN: 978-1-62708-349-2
... Ultrathin section of a particle-modified interlayer-toughened composite material. Transmitted-light Hoffman modulation contrast, 20× objective Fig. 1.13 Cross sections of honeycomb node areas showing the number of phenolic resin dip coats. (a) Transmitted light, 100× objective. (b) Void...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.9781627083492
EISBN: 978-1-62708-349-2
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2021
DOI: 10.31399/asm.tb.tpsfwea.t59300271
EISBN: 978-1-62708-323-2
.... When many global institutions intensified research into ceramics for tribosystems, it was discovered that adding yttria and other ceramics to zirconia stabilized crack growth and increased toughness. A popular toughened zirconia is tetragonal zirconia polycrystal. There are others...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540319
EISBN: 978-1-62708-309-6
..., makes the material more flaw tolerant. The particulates act to deflect cracks from the main propagation path and can absorb energy by a transformation mechanism as well. Whisker-toughened ceramics can be used for a variety of applications, such as heat exchangers, tool bits, and other aerospace...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780238
EISBN: 978-1-62708-281-5
... sensitive to the testing environment than metal or ceramic counterparts. These variables include the stress or strain amplitude of the loading cycle; the mean stress of the cycle; the presence of stress concentrations or initial defects in the component; the frequency, temperature, and environment...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870063
EISBN: 978-1-62708-314-0
..., epoxy, bismaleimide, cyanate ester, polyimide, and phenolic resins and various toughening methods. The chapter also covers thermoplastic matrix materials and product forms and provides an introduction to the physiochemical tests used to characterize resins and cured laminates. physiochemical test...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060163
EISBN: 978-1-62708-355-3
..., that the biaxial tests, in some cases, have been used to evaluate the possible dependence of strength on stress state in ceramics. For many toughening mechanisms present in CMCs, such as phase-transformation toughening, crack bridging, and fiber pullout, the behavior may be stress-state-dependent. In addition...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870573
EISBN: 978-1-62708-314-0
...-Nicalon-S, Tyranno SA, and Sylramic, are better than those of the earlier nonstoichiometric silicon carbide fibers, their moduli are 50 percent higher and their strain-to-failures are one-third lower, which reduces their ability to toughen ceramic matrices. However, of the commercial fibers currently...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290279
EISBN: 978-1-62708-306-5
... by mechanical fastening, adhesive bonding, and, for thermoplastic composites, welding; the making of glass-to-metal seals; and joining of oxide and nonoxide ceramics to themselves and to metals by solid-state processes and by brazing. The classification, types, applications, and the mechanism of each...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290243
EISBN: 978-1-62708-306-5
... joining methods in many applications. Many adhesives make superior stress-bearing components. Whether bonding metal to metal, plastic, glass, rubber, ceramic, or another substrate material, adhesives distribute stress load evenly over a broad area, reducing stress on the joint. Since they are applied...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290261
EISBN: 978-1-62708-319-5
... with nonconducting powders such as ceramics, especially as the particle size decreases. Binders are used to intentionally agglomerate powders that do not otherwise ow. air classi cation. A common means to separate speci c size classes of powders by differential settling in a high-velocity air stream or cyclone...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.9781627083195
EISBN: 978-1-62708-319-5
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550621
EISBN: 978-1-62708-307-2
... Abstract This chapter consists of three parts. The first part provides data and guidelines for selecting materials and processing routes. It compares the basic properties of metals, ceramics, and polymers, identifies important measures of performance, and discusses manufacturing processes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030089
EISBN: 978-1-62708-349-2
... viewed using bright-field illumination as compared to the carbon fibers. 10× objective Fig. 5.8 Cross section of a polished interlayer-toughened composite that was lightly etched showing height differences on the sample surface using reflected-light differential interference contrast. 10...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870373
EISBN: 978-1-62708-314-0
... on metal and ceramic matrix composites, respectively. However, even here the reader is cautioned. The data sets in these volumes, although rigorously controlled, are from many different sources fabricated under widely differing conditions. The bottom line is that there is no substitute for one’s own...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550385
EISBN: 978-1-62708-307-2
... is the matrix, either a polymer, metal, or ceramic. Polymers have low strength and stiffness, metals have intermediate strength and stiffness but high ductility, while ceramics have high strength and stiffness but are brittle. The matrix, or continuous phase, performs several critical functions. It maintains...