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porous structures

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Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290251
EISBN: 978-1-62708-319-5
... involving plastics, emulsions, ceramics, and porous structures and foams. Improvements in the design processes have led to the development of functional structures, controlled porosity, and bioinspired structures. binder jetting bound-metal deposition fused-filament fabrication plastics emulsions...
Image
Published: 01 January 2000
Fig. 50 Plug-type dezincification in an α-brass (70Cu-30Zn) exposed for 79 days in 1 N NaCl at room temperature. Note porous structure within the plug. The dark line surrounding the plug is an etching artifact. 160× More
Image
Published: 01 June 2008
Fig. 18.14 Plug-type dezincification in an α-brass (70Cu-30Zn) exposed for 79 days in 1 N NaCl at room temperature. Note porous structure within the plug. Dark line surrounding the plug is an etching artifact. Total width shown is 0.56 mm (22 mils). More
Image
Published: 01 December 2015
Fig. 2 Plug-type dezincification in an α-brass (70Cu-30Zn) exposed for 79 days in 1 N NaCl at room temperature. Note porous structure within the plug. Dark line surrounding the plug is an etching artifact. Total width shown is 0.56 mm (2.2 mils). More
Image
Published: 01 November 2012
Fig. 9 Plug-type dezincification in an α-brass (70Cu-30Zn) exposed for 79 days in 1 N NaCl at room temperature. Note porous structure within the plug. Dark line surrounding the plug is an etching artifact. Total width shown is 0.56 mm (22 mils). Source: Ref 3 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030082
EISBN: 978-1-62708-282-2
... Abstract This chapter discusses the effects of metallurgical variables on dealloying corrosion. It begins by describing the processes involved in dealloying of metal alloys in aqueous environments. This is followed by a discussion on the morphology of porous dealloyed structures below and above...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290001
EISBN: 978-1-62708-319-5
... or fused filament fabrication Complex shapes, closed-porosity structures, conformal cooling channel, infills Porous structures, freedom to make almost any shape, open and closed infills Rapid prototyping, mold inserts with conformal cooling, gears, artistic bodies Component production inherently...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000185
EISBN: 978-1-62708-312-6
... recently, highly porous stainless steels have also been made in the form of cellular structures and metal foams. Filters and other applications of similar porosities are usually made from water-atomized stainless steel powders by pressing and sintering, similar to the manufacture of structural parts...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290111
EISBN: 978-1-62708-319-5
... of capacitors, microelectronic substrates, porous tubes, casting filters, welding rods, diesel engine particulate filters, and automobile exhaust catalytic converter substrates. Figure 6.15 shows segments of extruded honeycomb produced by chopping a long structure. Porous metallic tubes have been produced...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740373
EISBN: 978-1-62708-308-9
... is important and where compressibility is not as important. Sponge powders, as a result of their porous structure and larger surface area, shrink more than atomized powders during sintering. They are sometimes added to atomized powders to modify and/or adjust the shrinkage characteristics of a powder mix...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480161
EISBN: 978-1-62708-318-8
... the desired uniform conditions for solidification. The last two effects are important for good product quality. Furnaces are also designed to avoid extraneous magnetic fields from power leads, steel structures, and other electric furnaces and equipment in the area. Such equipment tends to distort...
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
.... Fig. 3.15 Typical phenolic condensation reaction Phenolics are one route to the production of high-temperature-resistant C-C composites. The phenolic is charred, or pyrolized, to produce a carbon matrix. Since the charring process produces a porous structure due to the vaporization...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870255
EISBN: 978-1-62708-314-0
... frothing of the foam bondline may occur. Since many foaming core splice adhesives are inherently porous, they can provide a path for water to migrate through the core sections. Fig. 9.13 Complex structure with different core densities. (Arrows indicate locations of foam bondlines) Source: The Boeing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040055
EISBN: 978-1-62708-428-4
..., metallic bond coating (BC) and (2) a harder, porous, lower ductility ceramic top coating (TC). In the TC, porosity and cracks are key to its function as a thermal barrier layer in aero and power generation turbine engines. In the BC, features related to cohesion between splats and adhesion to the substrate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030023
EISBN: 978-1-62708-282-2
..., such as a buried metal pipe, some other metal structure, or an electrolyte with low resistance such as salt water. The current then flows to and from that structure and causes accelerated corrosion whenever it leaves a metallic structure and flows into an electrolyte. For example, in a pipeline...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000001
EISBN: 978-1-62708-312-6
..., and weldability, as well as improved room- and elevated-temperature mechanical properties. In some respects, the PM parts were even superior to their wrought counterparts ( Chapter 11, “Applications” ). Even though sintered stainless steels benefit from the same economic advantages as carbon steel structural...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040020
EISBN: 978-1-62708-428-4
... of coatings with unique microstructures such as columnar and segmented structures and ones with highly porous/high specific surface area, and dense features. Potential applications include thermal barrier coatings with stress relieving structures and with lower thermal conductivity for aerospace and gas...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870573
EISBN: 978-1-62708-314-0
... to infiltrate and form a ceramic matrix, it is called chemical vapor infiltration (CVI). In CVI, a solid is deposited within the open volume of a porous structure by the reaction or decomposition of gases or vapors. A porous preform of fibers is prepared and placed in a high-temperature furnace, as shown...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2023
DOI: 10.31399/asm.tb.ceeg.t59370145
EISBN: 978-1-62708-447-5
... a forehearth connected to the stack melter with a tap-out system for metal transfer to either a degassing and filtration furnace (used for structural castings in gravity and low-pressure permanent molding) or to a ladle (used to transfer the metal to holders in die casting machines). Figure 7.5(b...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560005
EISBN: 978-1-62708-291-4
... that when the report was prepared in 1902, the term eutectoid had not been devised (see the section “ Two-Phase Constituents ” later in this chapter). The morphology and grain structure of cementite have been described as fine cementite, coarse cementite, porous cementite, fragmented cementite...