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gaseous lubricants

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Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006401
EISBN: 978-1-62708-192-4
.... The article details the classifications of lubrication regimes, namely, boundary, mixed, hydrodynamic, and elastohydrodynamic lubrications. It discusses the various types of lubricant materials and additives, including liquid lubricants, solid lubricants, gaseous lubricants, greases, green lubricants...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003189
EISBN: 978-1-62708-199-3
..., advantages and limitations of cutting and grinding fluids, such as cutting oils, water-miscible fluids, gaseous fluids, pastes, and solid lubricants along with their subtypes. It discusses the factors considered during the selection of cutting fluid, focusing on machinability (or grindability...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005986
EISBN: 978-1-62708-168-9
... of nitrided layers. It describes the structural changes on the surface of carbon steels, alloy steels, and austenitic stainless steels. The article explains the effects of the various nitriding processes, namely, gaseous nitriding, plasma nitriding, gaseous nitrocarburizing, and salt bath nitrocarburizing...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006105
EISBN: 978-1-62708-175-7
... the roles of lubricant and compaction dies in pressing of copper powders. It explains the structural defects that originate during the compaction process of PM parts. The article also provides information on sintering, re-pressing, and re-sintering of copper PM parts. carbon brushes compaction dies...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003225
EISBN: 978-1-62708-199-3
..., electrical current, metal coupling, aggressive agents Check bulk composition and contaminants For gouging and abrasive wear: check source of abrasives Evaluate effectiveness of lubricant Seals and filters could have failed Fretting induced by slight looseness in clamped joints subject...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006097
EISBN: 978-1-62708-175-7
..., and various proprietary modifications of this lubricant are in use in the PM industry. Ethylene bis(stearamide) is more environmentally friendly than lithium stearate, because it can be easily and more completely dissociated into gaseous by-products. Removal of lithium stearate lubricant requires greater care...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006911
EISBN: 978-1-62708-395-9
..., which are materials added to the sliding interface; these can be solid, liquid, or gaseous substances ( Ref 8 ). Common additive lubricants in polymer systems include water and various forms of greases and oils. Solid lubricants such as MoS 2 can be placed at the sliding interface to reduce friction...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006806
EISBN: 978-1-62708-329-4
.... Fig. 1 Various sliding bearings. (a) Slide way. (b) Thrust bearing. (c) Cylindrical sliding bearing. (d) Spherical sliding bearing The various configurations of sliding bearings are shown in Fig. 2 . This figure indicates that conformal surfaces, lubricant (solid/liquid/gaseous) layer...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006413
EISBN: 978-1-62708-192-4
... lubricant viscosity, while higher soot levels generally increase lubricant viscosity. Blow-by gases traveling from the combustion chamber to the crankcase carry unburned fuel and products of incomplete combustion in gaseous and particulate form. The heavily polluted gases contaminate oil in the sump...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006137
EISBN: 978-1-62708-175-7
... of the atmosphere supplier and furnace manufacture should also be followed to minimize the safety risks associated with the use of specific atmospheres and furnace equipment. Environmental Concerns Typically, parts that are pressed before sintering contain 0.5 to 1.5% of admixed lubricants. These lubricants...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006409
EISBN: 978-1-62708-192-4
... be either be solid, fluid, or gaseous, the most common type in regular industrial environments are liquid lubricants (e.g., mineral oils). Depending on the relative velocity between opposing surfaces, the viscosity, and the applied normal load, four different lubrication regimes can be distinguished: full...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006135
EISBN: 978-1-62708-175-7
... is Fe-Cu-C-lubricant. In this article, Fe-Cu-C-lubricant green parts will be used as an example. Much of this article applies to many of the other materials also. An atmosphere used for the entire sintering process must perform several functions ( Ref 1 , 2 ). It must: Prevent air from...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003630
EISBN: 978-1-62708-182-5
... Abstract This article provides a discussion on the mechanisms of wear and their interactions with gaseous corrosion. The wear mechanisms include abrasive, erosive, fretting, and sliding. The measurement of degradation on combustion walls in coal-fired boilers is discussed. The article concludes...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006436
EISBN: 978-1-62708-192-4
..., and ion plating surface modification treatments. The thermochemical conversion surface treatments include nitriding, carburizing, boriding, and solid lubrication. friction wear titanium alloys physical vapor deposition thermochemical conversion treatments ion implantation sputtering...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003030
EISBN: 978-1-62708-200-6
... can occur with fretting if the appropriate chemical species are present. Lubrication Lubrication reduces friction and wear between surfaces in relative motion by the application of a solid, liquid, or gaseous substance (lubricant) ( Ref 1 ). A lubricant is therefore any substance that is used...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006362
EISBN: 978-1-62708-192-4
... be needed to achieve the desired composition. To avoid unacceptably high energy losses and inevitable contamination of the product associated with the use of conventional oil-lubricated bearings and seals, the pumping equipment bearings are instead lubricated by gaseous uranium hexafluoride. In 1957...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006133
EISBN: 978-1-62708-175-7
..., as is common in machining of stainless steel. The use of coolants and lubricants is optional except for thread tapping. If used, they should be water-based, nonalkaline formulations. Tungsten heavy alloys may be readily cut using a heavy-duty shop band saw equipped with either a bi-metal blade with hook...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006397
EISBN: 978-1-62708-192-4
... and wear. Microstructures are not drawn to scale. Lubrication Conditions While most of the discussion here deals with dry sliding friction, many sliding surfaces are lubricated to lower the friction and protect against wear. Lubricants may be a solid or a liquid or gaseous film that lowers...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002486
EISBN: 978-1-62708-194-8
... and still meet the requirements of the end product. For example, in cold compaction irregularly shaped powders are used to ensure adequate green strength and structural integrity of the as-pressed product. Special solid lubricants are added to the powder blend to reduce friction between the powder particles...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003012
EISBN: 978-1-62708-200-6
... Abstract Additives for plastics and elastomers are used to increase the ease of processing and to improve the properties of the final product. Additives improve processing characteristics by increasing lubricity and by stabilizing the polymer. Additives that improve properties include those...