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plasma-sprayed coatings

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Image
Published: 01 March 2002
Fig. 13.21 Typical thermal barrier coating produced by plasma spraying zirconia on MCrAlY underlayer More
Image
Published: 01 October 2012
Fig. 6.11 Effect of low-pressure plasma-sprayed Ti-51Al-12Cr coating on (a) 800 °C (1470 °F) and (b) 1000 °C (1830 °F) interrupted oxidation behavior of Ti-48Al-2Cr-2Nb γ-TiAl alloy in air. Source: Ref 6.1 More
Image
Published: 01 July 2009
Fig. 22.26 Processing variables that can influence the quality of plasma-sprayed coatings. Source: Castro et al. 1995 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040010
EISBN: 978-1-62708-428-4
... of plasma spray coatings is usually much higher than that of flame spray coatings and is typically in the range of 80 to 95% of theoretical. Coating thickness usually ranges from about 0.05 to 0.50 mm (0.002 to 0.020 in.) but may be much thicker for some applications (e.g., dimensional restoration...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460185
EISBN: 978-1-62708-285-3
... spray, high-velocity oxyfuel (HVOF), and air plasma spray (APS) ( Ref 7.19 ). The oxygen content and porosity of the starting powder and the coatings is shown in Table 7.1 . The MCrAlY coatings produced by cold spraying can have <1% porosity. Mass gain measurements after oxidation at 1000 °C (1830...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040020
EISBN: 978-1-62708-428-4
... identified are: Suspension and Solution Precursor Thermal Spray The demand for fine-structured coatings has led to the development of thermal spray processes that are based on plasma and HVOF systems. Thus, the use of liquid feedstock in the form of suspensions or solutions enables the production...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350183
EISBN: 978-1-62708-315-7
... characteristics of flame, arc wire, high-velocity oxyfuel, detonation gun, air plasma, and vacuum plasma thermal spray processes Table 19 Compares the abrasive wear resistance of tungsten carbide coatings applied by detonation gun, plasma, and high-velocity oxyfuel thermal spray processes Table 22...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350125
EISBN: 978-1-62708-315-7
... are usually applied by flame spraying or plasma spraying, although chromium oxide can be applied by spraying/dipping plus sintering. Carbides Carbides as ceramic coatings are principally used for wear and seal applications, in which the high hardness of carbides is an advantage. These applications...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040001
EISBN: 978-1-62708-428-4
... strength with extremely dense microstructures. Plasma coatings are also known to have high bond strength with relatively dense oxide-free microstructures when sprayed in either low pressure plasma spray (LPPS) or vacuum plasma spray (VPS) systems. Cold spray is a relatively new process that relies more...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.9781627084284
EISBN: 978-1-62708-428-4
Image
Published: 01 August 1999
Fig. 12 Coated discontinuous silicon carbide (particulate)/aluminum MMCs after seawater exposure. (a) Coated with ion vapor deposited aluminum; 4 month exposure. (b) Coated with plasma-sprayed aluminum oxide; 18 month exposure. (c) Coated with arc-sprayed zinc; 9 month exposure More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230361
EISBN: 978-1-62708-298-3
... Abstract This chapter discusses coating technologies that are applicable to beryllium, including physical and chemical vapor deposition, thermal evaporation, electroplating, sputtering, ion plating, and plasma arc spraying. It describes the advantages and disadvantages of each method...
Image
Published: 01 June 2016
Fig. 7.5 Thermal cyclic life of thermal barrier coatings (TBCs) with the bond coats deposited by cold spraying (CS-TBC) and low-pressure plasma spray (LPPS-TBC). Source: Ref 7.17 More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740325
EISBN: 978-1-62708-308-9
... Abstract This chapter covers a wide range of finishing and coating operations, including cleaning, honing, polishing and buffing, and lapping. It discusses the use of rust-preventative compounds, conversion coatings, and plating metals as well as weld overlay, thermal spray, and ceramic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040076
EISBN: 978-1-62708-428-4
... can be increased. Plasma sprayed molybdenum coatings are used in aerospace, automotive, marine, and heavy industry applications. The coating is sufficiently porous to operate under lubrication and can be impregnated with oil after spraying. Molybdenum based coatings are used on journal and bearing...
Image
Published: 01 June 2016
Fig. 7.3 Schematic of bond coat layer after high-temperature isothermal exposure. APS, air plasma spray; TBC, thermal barrier coating. Source: Ref 7.9 More
Image
Published: 01 June 2016
Fig. 7.1 Mass gain measurements as a function of oxidation time at 1000 °C (1830 °F) for CoNiCrAlY coatings deposited by high-velocity oxyfuel (HVOF), air plasma spray (APS), and cold gas dynamic spray (CGDS). Source: Ref 7.19 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460173
EISBN: 978-1-62708-285-3
... resulted in both improved deposition efficiency and higher coating density ( Ref 6.1 ). Particle size distribution affects the cold spray process the most. On one hand, a high content of very fine powders below 5 to 10 μm decreases the deposition efficiency (DE), increases the coating porosity...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870179
EISBN: 978-1-62708-299-0
... of exposure, indicating a loss of protection by the zinc coating. Aluminum oxide plasma-sprayed coatings applied to silicon carbide/aluminum MMCs exhibited varied results in the marine environment. The performance variations were attributable to differences in the quality of coating application rather...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460209
EISBN: 978-1-62708-285-3
... to 200% higher electrical conductivity than coatings deposited by arc, plasma, or high-velocity oxyfuel (HVOF) spraying because of the low degree of defects, such as pores and oxides, detrimental to mechanical, thermal, and electrical properties. Bobzin et al. studied a hybrid cold spray/injection...