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chemical vapor infiltration

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Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003372
EISBN: 978-1-62708-195-5
... Fig. 1 Typical microstructure of a fabric laminate produced by the chemical vapor infiltration process. The micrograph shows fibers in only one direction in one tow. Fig. 2 Micrographs of a melt infiltrated composite prepared from Hi-Nicalon fiber and the tow-winding method to create...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003422
EISBN: 978-1-62708-195-5
.... The article discusses matrix precursor impregnants, liquid impregnation, and chemical vapor infiltration (CVI) for densification of CCCs. It presents various coating approaches for protecting CCCs, including pack cementation, chemical vapor deposition, and slurry coating. Practical limitations of coatings...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001283
EISBN: 978-1-62708-170-2
... Fig. 7 Chemical vapor infiltration apparatus. Source: Ref 15 Fig. 4 Thermal-laser CVD growth mechanism Fig. 5 Photo-laser CVD apparatus Fig. 1 Thermal CVD reactor Fig. 2 Radio-frequency plasma CVD reactor configured for deposition on silicon wafers...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003373
EISBN: 978-1-62708-195-5
... or solvent carriers. It provides a description of the advantages and limitations of various methods involved in chemical vapor infiltration. The article concludes with a discussion on matrix contribution to composite properties. References References 1. Bachman P.K. , Ullman's Encyclopaedia...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003421
EISBN: 978-1-62708-195-5
... Chemical vapor infiltration (infiltration of a woven preform) SiC/SiC, C/SiC Polymer conversion (infiltration and pyrolysis) C/C, C/SiC, SiC/Si-C-N Typical chemical reactions for a variety of matrix materials made by CVI Table 2 Typical chemical reactions for a variety of matrix materials...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003063
EISBN: 978-1-62708-200-6
... of the limitations of traditional methods, especially in terms of cost. Some involve infiltration of a preform in combination with conventional densification techniques. Others include chemical vapor deposition or infiltration, directed oxidation, self-propagating high-temperature synthesis, microwave processing...
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
... , CFCCs are processed by various methods, including chemical vapor infiltration (CVI), polymer impregnation pyrolysis (PIP), melt infiltration, reaction bonding (also referred to as “nitride bonding”), sol gel infiltration, slurry infiltration, directed metal oxidation, and a combination of cold isostatic...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0005586
EISBN: 978-1-62708-170-2
... computer numerical control cP centipoise CSOM confocal scanning optical microscope cSt centistokes CTE coefficient of thermal expansion CVD chemical vapor deposition CVI chemical vapor infiltration CVN Charpy V-notch (impact test or specimen) cw...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003311
EISBN: 978-1-62708-176-4
... A.J. , and Lowden R.A. , Synthesis of Fiber-Reinforced SiC Composites by Chemical Vapor Infiltration , Am. Ceram. Soc. Bull ., Vol 65 ( No. 2 ), 1986 , p 347 – 350 5. Stinton D.P. , Lackey W.J. , Lauf R.J. , and Besmann T.M. , Fabrication of Ceramic-Ceramic...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003064
EISBN: 978-1-62708-200-6
... Fig. 11 Chemical vapor infiltration process Fig. 16 Change of properties with number of redensifications (two-directional weave, 8 harness/satin) Fig. 18 Coefficient of thermal expansion, parallel and perpendicular to laminates of two-directional weave carbon-carbon composite...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006125
EISBN: 978-1-62708-175-7
... of liquid-phase sintering of tungsten heavy alloys and describes the infiltration of tungsten and molybdenum for attaining full density. The article concludes by providing information on hot isostatic pressing of refractory metal alloys to full density. fully density processing hot isostatic pressing...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006050
EISBN: 978-1-62708-172-6
... applies to both the number of coats and the thickness of each. The problem is exacerbated at locations where a low-perm coating, a vapor barrier, and/or rigid insulation have been installed on the interior of the building. While the vapor barrier reduces the amount of moisture infiltrating the block...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006488
EISBN: 978-1-62708-207-5
...Abstract Abstract In general, metal-matrix composites (MMCs) are classified into three broad categories: continuous fiber-reinforced composites, discontinuous or short fiber-reinforced composites, and particle-reinforced composites. This article focuses on stir casting and melt infiltration...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003157
EISBN: 978-1-62708-199-3
... in the sintered skeleton. After infiltration, the contact is sometimes chemically or electrochemically etched so that only pure silver appears on the surface. The contact thus treated has better corrosion resistance and performs better in the early stages of use. For small refractory-metal contacts...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001318
EISBN: 978-1-62708-170-2
..., chemical vapor deposition; EBPVD, electron-beam physical vapor deposition Fig. 3 Calculated thermal stresses for thin coatings on high-performance carbon-carbon laminates. Ratio of substrate thickness to coating thickness = 20 Fig. 1 Oxidation kinetics of refractory materials. CVD...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001105
EISBN: 978-1-62708-162-7
... Simple or complex shapes … Medium Low to high Hot extrusion Depending on press capacity Long pieces with uniform cross sections Alloy steel dies High Low Infiltration Depending on equipment Intricate shapes feasible Graphite and ceramic molds Low High Comparison of transverse...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001101
EISBN: 978-1-62708-162-7
.... (a) Hot-pressed SiC fibers (SCS-6, 35 vol%) in a Ti-6Al-4V matrix. Fiber thickness, 140 μm; density, 3.86 g/cm 3 . (b) Chemical vapor deposited SiC fiber (SCS-6) showing the central carbon monofilament substrate and the carbon-rich surface. Fiber properties; thickness, 140 μm; tensile strength, 3450 MPa...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003430
EISBN: 978-1-62708-195-5
... and the Chemical Vapor Deposition Method , High Temp. Ceram. Matrix Compos. III , Vol 164 ( No. 1 ), 1999 , p 49 – 52 53. Tittmann B.R. , Bhardwaj M.C. , Vandervalk L. , and Neeson I. , Non-Contact Ultrasonic NDE of Carbon-Carbon Composite , Ceram. Eng. Sci. Proc. , Vol 20...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003789
EISBN: 978-1-62708-177-1
... not filled with oxide. Arrows E surround a eutectoid region. White areas are ferrite. 2% nital. 365× Fig. 52 Microstructures of (a) conventionally (partially) infiltrated steel showing the degree of pore filling and (b) fully infiltrated steel showing completeness of pore filling. Unetched. 75...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003374
EISBN: 978-1-62708-195-5
... FIBER-MATRIX ADHESION is a variable to be optimized in order to get the best properties and performance in composite materials. The contemporary view of adhesion rests on an interphase model in which not only the actual chemical and physical interactions between fiber and matrix are considered...