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dispersed-phase toughening

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Published: 01 November 2010
Fig. 10.3 Dispersed-phase-toughened carbon fiber composite material that was sectioned at an oblique angle to obtain a larger view of the interlayer region. Large, irregular phases, with some phases spherical and hollow, were found in the interlayer area and extended into the intraply area More
Image
Published: 01 November 2010
Fig. 10.4 Dispersed-phase-toughened carbon fiber composite material that was sectioned at an oblique angle to obtain a larger view of the interlayer region. A complex morphology was revealed, which was also present in the intraply area. Ultrathin section. Transmitted light, differential More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030177
EISBN: 978-1-62708-349-2
... Fig. 10.1 Micrograph of a carbon fiber composite material that contains a very small dispersed-rubber phase in the matrix. Ultrathin section. Transmitted light, Hoffman modulation contrast, 40× objective Fig. 10.2 Micrograph of a carbon fiber composite material that was toughened...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030001
EISBN: 978-1-62708-349-2
... This chapter provides a general description of materials and methods for manufacturing high-performance composites. The materials covered are polymer matrices and prepreg materials and the methods include infusion processes, composite-toughening methods, matrix-toughening methods, and dispersed-phase...
Image
Published: 01 November 2010
Fig. 11.11 Micrograph of crack propagation through a dispersed-phase, rubber-toughened thermoset-matrix composite after impact. Transmitted-light phase contrast, 40× objective More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030193
EISBN: 978-1-62708-349-2
...× objective Fig. 11.11 Micrograph of crack propagation through a dispersed-phase, rubber-toughened thermoset-matrix composite after impact. Transmitted-light phase contrast, 40× objective Fig. 11.12 Fracture morphology in a particle interlayer-toughened thermoset-matrix composite...
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: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030089
EISBN: 978-1-62708-349-2
... frequently used stains for highlighting dispersed phases in thermosetting multiphase composite materials. A common stain that has been used for identification of butadiene-acrylonitrile rubber toughening domains in thermosetting resins is osmium tetroxide ( Ref 15 ). This material is usually dissolved 2.5...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030211
EISBN: 978-1-62708-349-2
... in many areas. With higher magnification ( Fig. 12.6 ) and the use of bright-field illumination, the bamboo fibers are found to be irregular in shape. Also in this micrograph, the appearance of a dispersed phase is indicated by light, circular areas. Other features that are even more complex...
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
.... Since these mechanisms complement each other, the toughening effect can be nearly doubled. A finely dispersed phase of elastomer-rich domains can be obtained by using either (1) preformed rubber particles or (2) a rubber elastomer system that is initially soluble in the liquid resin but then phase...
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
...-Toughened Zirconia Transformation-toughened zirconia is a generic term applied to stabilized zirconia systems in which the tetragonal symmetry is retained as the primary zirconia phase. The four most prominent tetragonal-phase stabilizers are CeO 2 , Y 2 O 3 , CaO, and MgO. The use of these four...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550569
EISBN: 978-1-62708-307-2
... for these materials include crack deflection, crack bridging, pull-out, microcracking, crack pinning, and phase transformation. In most instances, the toughening observed in a discontinuously reinforced CMC is the result of the combination of two or more of these toughening mechanisms. The ceramic matrix...
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
... solids content while maintaining a fairly low-viscosity liquid phase. These high-molecular-weight polymers lead to improved properties, including an increase in resistance to extreme service conditions. In addition, the crosslinking of many water-based adhesives is a possibility. This results...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770051
EISBN: 978-1-62708-337-9
... cannot indicate how the carbide phase will appear to the metallographer. Generally, if the carbides form during cooling they will be grain-boundary carbides, and if reheating is involved there may also be fine dispersions. Globular carbides, on the other hand, form during heating and during holding...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290009
EISBN: 978-1-62708-319-5
..., powder flow and rheology, and chemical analysis. The chapter then describes the general categories of powder fabrication methods, namely mechanical comminution, electrochemical precipitation, thermochemical reaction, and phase change and atomization. It provides information on the two largest...
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
...-velocity droplets that spheroidize prior to solidi cation. cermet. Also a solid composite such as cemented carbides where the predominant hard phase is generally not tungsten carbide. The hard phase is another refractory compound, carbide, oxide, boride, nitride, or mixture dispersed in a softer matrix...
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 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030115
EISBN: 978-1-62708-349-2
..., and short fibers embedded in a matrix or adhesive. A common feature of interest is a toughening phase or particle either dispersed throughout the matrix or in the interlayer region. Large, complex structures with an array of different materials. Frequently, there are zones with intermingled phases...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550385
EISBN: 978-1-62708-307-2
.... Typically, damage tolerance is a resin-dominated property. The selection of a toughened resin can significantly improve the resistance to impact damage. In addition, S-2 glass and aramid fibers are extremely tough and damage tolerant. During the design phase, it is important to recognize the potential...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870573
EISBN: 978-1-62708-314-0
... (CVD) 21.5 Fabrication Methods Fabrication of ceramic matrix composites can be performed using solid, liquid, or gas phase processing to infiltrate the matrix onto the reinforcement. In any process, the objectives are to achieve minimum porosity, obtain uniform dispersion of reinforcement...