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abrading

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Published: 01 December 2004
Fig. 6 Pearlitic steel. (a) Results of abrading on an abrasive belt and then polishing for only long enough to remove abrasion scratches; structure contains abrasion-deformation artifacts. (b) Results of abrading on 600-grit silicon carbide paper and then polishing only long enough to remove More
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Published: 01 December 2004
Fig. 8 Effects of abrasion on flake graphite in gray iron. (a) Results of abrading on 220-grit silicon carbide paper. (b) Results of abrading on 600-grit silicon carbide paper. (c) Results of abrading on a fine fixed-abrasive lap. See also the taper section in Fig. 9 . As-polished. 500× More
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Published: 01 December 2004
Fig. 27 Effect of different abrading and polishing techniques on the appearance of oxide scale on high-purity iron. (a) Specimen abraded on 400-grit silicon carbide paper; numerous chipping artifacts are present in the oxide. (b) Specimen abraded on a fine fixed-abrasive lap; minor chipping More
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Published: 01 December 2004
Fig. 38 Result obtained by abrading a cast aluminum 19.9% Si alloy with a polymer lap extrinsically charged with 9 μm grade diamond abrasive. 250×. Source: Ref 1 More
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005738
EISBN: 978-1-62708-171-9
... Abstract This article provides an overview of key abradable thermal spray coating systems based on predominant function and key design criteria. It describes two families of coatings which have evolved for use at higher temperature: flame (combustion)-sprayed abradable powders and atmospheric...
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Published: 01 January 1986
Fig. 19 FMR study of abraded ribbons. A, both surfaces; B, shiny surface; C, rough surface, abraded. Source: Ref 17 More
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Published: 01 August 2013
Fig. 29 Surfaces of a eutectic bismuth-silver alloy (a) abraded on 600-grade silicon carbide paper and (b) polished on 3 and 0.05 μm (0.12 and 0.002 mil) aluminum oxide abrasives. Original magnification: 2200× More
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Published: 01 August 2013
Fig. 31 Surface of fused silica abraded with 220-grade silicon carbide abrasive under constant load. (a) Two-body abrasion. Fresh, sharp abrasive particles. SEM; original magnification: 300×. (b) Two-body abrasion. Worn, blunt abrasive particles. Optical micrograph after etching; original More
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Published: 01 August 2013
Fig. 35 Ideal cutting/wearing of an abradable coating consisting of ceramic matrix (blue), fugitive filler or porosity (green), and a network of a release-agent phase (red). Source: Ref 37 More
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Published: 01 August 2013
Fig. 37 Schematic of test rig for abradability testing. Source: Ref 39 More
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Published: 01 August 2013
Fig. 6 Cross-sectional micrograph of CoNiCrAlY-BN-polyester abradable More
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Published: 01 August 2013
Fig. 12 Abrasive tip coatings for ceramic abradables. Courtesy of Rolls-Royce plc More
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Published: 01 August 2013
Fig. 2 Generic overview of the common types of abradable coating degradation in turbomachinery under varying service conditions More
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Published: 01 August 2013
Fig. 5 Typical coating microstructures for a nickel (75%)-graphite (25%) abradable that was flame sprayed using different gas flow mixtures to achieve different levels of hardness More
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Published: 01 August 2013
Fig. 6 Typical coating microstructures for a NiCrAl-bentonite abradable that was flame sprayed to achieve two different levels of hardness. (a) Low hardness and tensile strength (46 HR15Y and 2.7 MPa, or 387 psi). (b) High hardness and tensile strength (75 HR15Y and 9.8 MPa, or 1425 psi) More
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Published: 01 August 2013
Fig. 7 Typical coating microstructures for a NiCrAlFe-boron nitride abradable that was flame sprayed to achieve two different levels of hardness More
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Published: 01 August 2013
Fig. 9 Overview of abradable coating materials and their designated hardness (HR15Y) specified ranges according to blade material type compatibility and for different service temperature regimes. RT, room temperature; LPC, low-pressure compressor; HPC, high-pressure compressor; HPT, high More
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Published: 01 August 2013
Fig. 10 Yttria-stabilized zirconia-base abradable SM 2395 with agglomeration and plasma densification/spheroidizing-processed ceramic powder showing smooth and spherical particle appearance More
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Published: 01 August 2013
Fig. 11 Yttria-stabilized zirconia (YSZ)-base abradable microstructures with varying porosity levels. The combination of low elastic modulus of YSZ, high melting and sintering resistance, and controllable defect and macroporosity concentrations contributes to compliant (low-stiffness) coating More
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Published: 01 August 2013
Fig. 13 Sulzer abradable incursion test facility in Winterthur, Switzerland More