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pack diffusion coating

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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
... Coatings for Gas Turbine Engine Hot Section Parts” of this article. Values of Δ<italic>P</italic><sub><italic>i</italic></sub> for the major diffusing gaseous species in variously activated aluminizing packs at 1093 °C (2000 °F) Table 1 Values of Δ P i for the major diffusing gaseous species...
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
... NO x /SO x removal units 304 stainless steel Chemical processing Reactor vessels and tubing 304/316 stainless steel Cement Cooler grates Stainless steel, HP, HK Abstract Abstract Pack cementation is the most widely employed method of diffusion coating. This article briefly...
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...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003218
EISBN: 978-1-62708-199-3
..., and the halide activator are thoroughly mixed together, and the part to be coated is buried in this mixture in a retort. When the mixture is heated, the activator reacts to produce an atmosphere of source element(s) halides that diffuse into the pack and transfer the source element(s) to the substrate on which...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003218
EISBN: 978-1-62708-199-3
... that involves heating a closed/vented pack to an elevated temperature (e.g., 1050 °C, or 1920 °F) for a given time (e.g., 16 h) during which a diffusional coating is produced. The traditional pack consists of four components: the substrate or part to be coated, the master alloy (i.e., a powder of the element...
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
...) with Al 2 O 3 and to 2200 °C (3990 °F) with ZrO 2 . Interest in coatings for molybdenum shifted from an aluminide to a silicide base in the mid 1950s. A list of the basic silicide coatings is shown in Table 6 . Most of the silicide coatings are deposited by pack-cementation diffusion processes...
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: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006420
EISBN: 978-1-62708-192-4
... diffusion treated samples: (a) chromium compound layer on AISI 1060 steel, and (b) boride layer on AISI 1060 steel. Source: Ref 9 Fig. 10 Wear curves of the TD and pack diffusion layers derived from tests using a micro-wear machine with fixed ball configuration without the use of an abrasive...
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
... (a) , wt% Process steps investigated (a) Substrate(s) treated Temperature, °C (°F) Reference Boroaluminizing Electrolytic salt bath 3–20% Al 2 O 3 in borax S Plain carbon steels 900 (1650) 67 Boroaluminizing Pack 84% B 4 C + 16% borax97% ferroaluminum + 3% NH 4 Cl S Plain carbon...
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
... (0.1–1 mil) 40–60 (a) Low-carbon steels Low-distortion process for thin case on low-carbon steel; most processes are proprietary Other Aluminizing (pack) Diffused aluminum 870–980 1600–1800 25 μm–1 mm (1–40 mils) &lt; 20 Low-carbon steels Diffused coating used for oxidation...
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
... by pack cementation Table 11 Cycles for application of silicide and other oxidation-resistant ceramic coatings by pack cementation Processing cycles suitable for depositing coatings of silicon, chromium, boron, aluminum, titanium, zirconium, vanadium, hafnium, and iron Substrate metal...
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
... material powders and activators, usually halides, that are heated in airtight vessels (powder-packing process) or in fluidized beds (fluidizing-bed process). The thermoreactive deposition and diffusion (TRD) process is a heat-treatment-based method to form coatings, with compacted layers of carbides...
Book Chapter

Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005765
EISBN: 978-1-62708-165-8
... for pack carburizing are the box, car-bottom, and pit types. Carburizing containers are made of carbon steel, aluminum-coated carbon steel, or iron-nickel-chromium heat-resisting alloys. The article also provides information on the packing procedure of workpieces. carbon content case depth furnaces...
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: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005620
EISBN: 978-1-62708-174-0
... to copper Steel to titanium Stainless steel to aluminum Galvanized steel to aluminum alloy Titanium to aluminum alloy Joining for this purpose can be done in various ways, such as mechanical clinching, self-piercing riveting, adhesive bonding, diffusion bonding, explosion welding, friction...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001311
EISBN: 978-1-62708-170-2
... and oxidation resistance through the use of polishing, buffing, and wire brushing operations. The article also covers a wide range of surface modification and coating processes, including ion implantation, diffusion, chemical and physical vapor deposition, plating, anodizing, and chemical conversion coatings...
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 Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005707
EISBN: 978-1-62708-171-9
... Laser CVD Coat localized areas on a surface without bulk heating 200–1000 390–1830 100 torr–1 atm Packed-bed CVD Alloy/conversion coatings in powder packed-bed environment 500–1200 930–2190 100 torr–1 atm Fluidized-bed CVD Coat powders and small components 350–1600 660–2910 100 torr–1...
Book Chapter

Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001380
EISBN: 978-1-62708-173-3
..., including pack rolling. It describes a patented roll welding process for fabrication of heat exchangers. The article presents a table showing the typical properties of common roll welded clad laminates. The relative weldability of selected dissimilar metals and alloys roll welded into clad-laminate form...
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...