1-20 of 77 Search Results for

gas nitrocarburizing

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005806
EISBN: 978-1-62708-165-8
... Abstract This article summarizes the terminology for gas reactions, and discusses low-temperature nitriding and nitrocarburizing of stainless steels. It describes the various nitriding processes, namely, high- and low-pressure nitriding, oxynitriding, sulfonitriding, oxysulfonitriding, ferritic...
Image
Published: 01 August 2013
the recommended minimum composition. ○, gas nitrocarburized; ⚫, gas nitrocarburized plus oxidized; Δ, salt bath nitrocarburized;▲, salt bath nitrocarburized plus oxidized. Source: Ref 20 More
Image
Published: 01 October 2014
Fig. 32 Schematic of plasma nitriding and nitrocarburizing equipment. 1 and 2, gas introduction; 3, thermocouple; 4, cathode; 5, pressure sensor; 6 to 8, needle valve; 9, diaphragm valve; 10, solenoid; 11, vacuum pump; 12, sample holder; 13, sample; 14, anode; 15, sealing ring; 16, stainless More
Image
Published: 30 September 2014
Fig. 31 Residual stresses in the compound layer after different nitriding/nitrocarburizing processes. NC, nitrocarburizing. Gas Nitrocarburizing: a: (50% NH 3 + 2% CO 2 + 48% N 2 ) 580 °C 60 min/oil, b: (50% NH 3 + 5% CO 2 + 45% N 2 ) 580 °C 60 min/oil, c: (50% NH 3 + 10% CO 2 + 40% N 2 More
Image
Published: 30 September 2014
Fig. 32 Residual stresses in the compound layer after different nitriding/nitrocarburizing processes plus plastic deformation by rolling. NC, nitrocarburizing. Gas Nitrocarburizing: a: (50% NH 3 + 2% CO 2 + 48% N 2 ) 580 °C 60 min/oil, b: (50% NH 3 + 5% CO 2 + 45% N 2 ) 580 °C 60 min/oil More
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
..., on the structure and properties of nitrided layers. gas nitriding gas nitrocarburizing nitriding plasma nitriding salt bath nitrocarburizing steel NITRIDING IS A GENERAL TERM for all processes based on the addition of nitrogen to the surface of steel, whether or not other interstitial elements...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006355
EISBN: 978-1-62708-192-4
...-contact fatigue (RCF) occurs in rolling contacts such as bearings, rolls, and gears. The article provides a discussion on rolling-contact fatigue of nitrided steels for aerospace bearing components. nitrocarburized steels nitriding nitrogen carbon nitrocarburizing sulfur sulfonitriding gas...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005956
EISBN: 978-1-62708-166-5
... donator that today typically is of a gaseous kind. Basically two carbon donators are applied in current industrial applications. Carbon monoxide is the carbon donator during pack cementation, salt bath carburization, and controlled gas carburization. The other ones are hydrocarbons such as propane...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005818
EISBN: 978-1-62708-165-8
.... Different methods exist for introducing atomic nitrogen, or both atomic nitrogen and atomic carbon, into the surface of steel. As described in other articles in this Volume, various nitriding/nitrocarburizing atmospheres can be indicated: Gas (NH 3 -H 2 ) mixtures (see “Gas Nitriding and Gas...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005870
EISBN: 978-1-62708-167-2
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005791
EISBN: 978-1-62708-165-8
... nitriding, the nitrocarburizing of steel ( Ref 1 ) also is done by the plasma method. Ion nitriding, when compared to conventional (gas) nitriding, offers more precise control of the nitrogen supply at the workpiece surface. Other advantages of ion nitriding are: Improved control of case thickness...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.9781627081658
EISBN: 978-1-62708-165-8
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005958
EISBN: 978-1-62708-168-9
... and nitrocarburizing processes and the equipment required for heat treating tool steels to improve hardness, wear resistance, and thermal fatigue. The various nitriding and nitrocarburizing processes covered are salt bath nitrocarburizing, gas nitriding and nitrocarburizing, and plasma nitriding and nitrocarburizing...
Image
Published: 01 August 2013
-containing gas atmosphere: 3 vol% CO; 53 vol% NH 3 , and 44 vol% H 2 at 570 °C, or 843 K). (b) The carbon enrichment in the ϵ phase at these depths can eventually lead to cementite formation. The associated transformation of the original ϵ phase to cementite (θ) adjacent to the channel walls leads to fine More
Image
Published: 01 October 2014
Fig. 13 Reflected-light micrographs of nitrocarburized and carburized and subsequently nitrided stainless steel showing two istinct zones of carbon- and nitrogen-expanded austenite (ex situ nickel activation). (a) AISI 304 nitrocarburized in a gas atmosphere of 14% C 3 H 6 -54% NH 3 -22% H 2 More
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005959
EISBN: 978-1-62708-168-9
..., nitriding, carburizing, or nitrocarburizing can be carried out in conventional gas atmospheres, at sufficiently low temperatures to prevent nitride/carbide formation. The advantages of this method are that activated stainless steel can be stored before the actual surface treatment is performed (provided...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005776
EISBN: 978-1-62708-165-8
.... case depth case hardness liquid nitriding liquid nitrocarburizing safety precautions salt bath furnaces salt bath nitrocarburizing steel LIQUID NITRIDING (nitriding in a molten salt bath) employs the same temperature range as gas nitriding, that is, 510 to 580 °C (950 to 1075 °F). The case...
Image
Published: 01 August 2013
Fig. 25 (a) Microstructure of Armco iron plasma nitrocarburized at 570 °C (1060 °F) for 3 h at a gas pressure of 3.5 mbar. Gas mixture: 90 vol% N 2 , 1 vol% CO 2 , 9 vol% H 2 . Etched in a 1 mL mix of hydrochloric acid (HCl) and ethanol (1 part concentrated HCl + 10 parts ethanol) plus 99 mL 5 More
Image
Published: 31 December 2017
Fig. 13 Surface roughness of G3500 gray cast iron samples nitrocarburized at 570 °C (1060 °F) for 4 h using plasma (50% nitrogen, 2% methane, and 48% hydrogen) and one-step gas ( K N = 3.5 and K C = 0.24) methods. Adapted from Ref 9 More
Image
Published: 31 December 2017
Fig. 12 Scanning electron microscopy surface images of G3500 gray cast iron samples nitrocarburized at 570 °C (1060 °F) for 4 h using (a) plasma (50% nitrogen, 2% methane, and 48% hydrogen) and (b) one-step gas ( K N = 3.5 and K C = 0.24) methods. Adapted from Ref 11 More