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pack cementation

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Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005775
EISBN: 978-1-62708-165-8
...Typical characteristics of pack cementation processes Table 1 Typical characteristics of pack cementation processes Process Nature of case Process temperature Typical case depth Case hardness, HRC Typical base metals Process characteristics °C °F Aluminizing (pack...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003686
EISBN: 978-1-62708-182-5
... vapor deposition Physical vapor deposition (thermal evaporation, ion sputtering, ion plating) Surface modified coatings Diffusion-induced modification of chemical composition and/or microstructure of substrate Pack cementation Slurry cementation Metalliding Hot dipping Surface...
Book Chapter

Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001293
EISBN: 978-1-62708-170-2
...Partial list of commercial applications of pack cementation aluminizing Table 3 Partial list of commercial applications of pack cementation aluminizing Industry Component Typical materials aluminized Hydrocarbon processing Refinery heater tubes 2 1 4 % Cr-1% Mo steel...
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.a0001280
EISBN: 978-1-62708-170-2
... Temperature Life, h Method Thickness Silicide Additives °C °F μm mils Molybdenum silicide (MoSi 2 ) None Mo-0.5 Ti 1480 2700 10 Fluidized bed 25–50 1–2 Nb Mo-0.5 Ti 1540 2800 12 Pack cementation 75 3 Cr, Al Mo-0.5 Ti 1540 2800 8 Pack cementation (b) 60 2 Cr Mo...
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
... of protecting carbon-carbon composites and explains the various coating deposition techniques, namely, pack cementation, chemical vapor deposition, and slurry coatings. It includes information on the practical limitations of coatings for the carbon-carbon composites. References References 1...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006420
EISBN: 978-1-62708-192-4
... and galling resistance of metal surfaces. Boronizing can be carried out using several techniques. This article discusses the powder pack cementation process for carrying out boronizing. It describes the structures of boride layers in ferrous materials and boride-layer structures in nickel-base superalloys...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003218
EISBN: 978-1-62708-199-3
... discusses the characteristics of different pack cementation processes, including aluminizing, siliconizing, chromizing, boronizing, and multicomponent coating. aluminizing boronizing chemical vapor deposition chemical vapor deposition materials chromizing multicomponent coating siliconizing...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005772
EISBN: 978-1-62708-165-8
... severe wear. This article presents a variety of methods and media used for boriding of ferrous materials, and explains their advantages, limitations, and applications. These methods include pack cementation boriding, gas boriding, plasma boriding, electroless salt bath boriding, electrolytic salt bath...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003218
EISBN: 978-1-62708-199-3
... the characteristics of different pack cementation processes, including aluminizing, siliconizing, chromizing, boronizing, and multicomponent coating. aluminizing boronizing chemical vapor deposition chemical vapor deposition materials chromizing multicomponent coating siliconizing CHEMICAL VAPOR...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001313
EISBN: 978-1-62708-170-2
... for molybdenum Type Deposition process Molybdenum silicide Fluidized bed, pack cementation, slip pack, plasma spray, electrophoresis Molybdenum silicide and chromium Pack cementation Molybdenum silicide and chromium, boron Pack cementation Molybdenum silicide and chromium, aluminum, boron...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003151
EISBN: 978-1-62708-199-3
...-temperature service. Early coating development for niobium centered on pack cementation and CVD. However, experience with these two processes showed that they increased the DBTT of the metal and caused part distortions. Later, spurred by the needs of the Apollo space program, techniques were devised...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002466
EISBN: 978-1-62708-194-8
... , Surface Modification Technologies IV , Sudarshan T.S. , Bhat D.G. , and Jeandin M. , TMS , 1991 , p 583 53. Harper M.A. and Rapp R.A. , Codeposition of Chromium and Silicon in Diffusion Coatings for Iron-Base Alloys Using Pack Cementation , Surface Modification...
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
... graphite is the higher-temperature product (1900 to 2300 °C, or 3450 to 4170 °F) with a high degree of preferred orientation in the “C” direction. Fig. 6 Pack-cementation chromizing/siliconizing apparatus. Pack material composed of 3 wt% Cr, 11 wt% Si, 0.25 wt% NH 4 I, and balance, Al 2 O 3...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004156
EISBN: 978-1-62708-184-9
... No. 60: Some Chemical Aspects of Fireside Corrosion in Oil Fired Boilers , J. Inst. Fuel , July 1970 25. Bianco R. , Harper M.A. , and Rapp R.A. , Codeposition of Elements in Diffusion Coatings by the Halide-Activated Pack Cementation Method , J. Met. , Nov 1991 , p 68...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003220
EISBN: 978-1-62708-199-3
... the relevant procedures. Diffusion coatings via pack cementation of aluminum, chromium, silicon, or combinations thereof, also are used to protect heat-resistant alloy parts from high-temperature corrosion and to prolong part life. The coating of engine exhaust valves with aluminum is a common example...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003220
EISBN: 978-1-62708-199-3
.... The section “Ceramic Coatings” in the article “Dip, Barrier, and Chemical Conversion Coatings” in this Section describes the relevant procedures. Diffusion Coatings Diffusion coatings via pack cementation of aluminum, chromium, silicon, or combinations thereof, also are used to protect heat-resistant...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005737
EISBN: 978-1-62708-171-9
... of coating systems used on IGT components. These types of coatings were needed to enhance the life and performance of these engine components. Key coating technologies used over the years include slurry, pack cementation, galvanic, electron beam physical vapor deposition (EB-PVD), and thermal spray (air...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005771
EISBN: 978-1-62708-165-8
... in an atmosphere of a volatile compound of the coating material (out-of-contact gas-phase deposition, or chemical vapor deposition). As the coating bond is developed by diffusion, the bond strength is enhanced. Solid-state diffusion methods include pack cementation, which is the most widely employed diffusion...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005773
EISBN: 978-1-62708-165-8
... reagents Stable quality of coating Better throwing power Uniform coating temperature Tight dimensional control Smaller shape distortion Most expensive equipment Good equipment design required for substrate steel hardening High-temperature powder-packing process Less...