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nitrocarburizing

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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
... studies, and applications of nitrocarburizing of steel. glow-discharge process microstructure nitrocarburizing plasma nitriding plasma nitrocarburizing process control steel Introduction Plasma nitriding (also known as ion nitriding, plasma ion nitriding, or glow-discharge nitriding...
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
... and nitrocarburizing of iron-base materials with gaseous processes. It describes nitriding potentials and the Lehrer diagram, carburizing potentials, controlled nitriding and nitrocarburizing, and the microstructural evolution of the compound layer and the diffusion zone. carburizing iron-nitrogen phase diagram...
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...
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Published: 01 October 2014
Fig. 21 Effluent-free salt bath nitrocarburizing line. Source: Durferrit GmbH More
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Published: 01 October 2014
Fig. 25 Schematic layout of the process control of nitriding and nitrocarburizing processes. Source: Aichelin GmbH More
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Published: 01 October 2014
Fig. 17 Hardness-depth profiles after nitriding (solid lines) and nitrocarburizing (dash-dot lines) for 16 h of 100 μm strip 7C27Mo2 (molybdenum-modified AISI 420) at the temperatures indicated. Hardness profiles were fitted assuming a sigmoidal function. Source: Ref 86 More
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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
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Published: 01 August 2013
Fig. 3 Nitrocarburized steel surfaces. (a) Ferritic nitrocarburizing at 570 °C (1060 °F), where gen is the predominant element in the compound layer of epsilon (ε) carbonitride. (b) Low-temperature austenitic nitrocarburizing at 700 °C (1290 °F), with a martensitic or bainitic microstructure More
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Published: 01 August 2013
Fig. 12 Nitrocarburizing diagram displaying isoconcentration lines for nitrogen and carbon, calculated according to Kunze ( Ref 18 ). The diagram gives the expected compound layer composition, depending on nitriding potential and carbon activity at 575 °C (1065 °F). Source: Ref 1 More
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Published: 01 August 2013
Fig. 19 Nitrocarburizing time to create a compound layer of approximately 10 μm on a microalloyed 1006 (high strength, low alloy) steel at varying temperatures. The nitriding potential has been adjusted to match the temperature and is controlled using NH 3 and dissociated NH 3 with a 10 vol More
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Published: 01 August 2013
Fig. 27 H 2 -O 2 measuring system for nitriding and nitrocarburizing atmospheres mounted on the back side of a horizontal retort furnace. The hydrogen analyzer is mounted on top of the flange, with the oxygen probe sticking from the back into the furnace retort. Courtesy of Process-Electronic More
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Published: 01 August 2013
Fig. 15 Sample of plain carbon steel after low-cyanide salt bath nitrocarburizing treatment (Process 3). The high level of apparent porosity is a characteristic of high sulfur content in the compound zone; dark areas are actually iron-sulfide nodules, not voids. More
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Published: 01 August 2013
Fig. 28 Plasma nitrocarburizing installation for heat treating a load of 3000 automotive seat rails. Courtesy of Klockner Ionon GmbH More
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
... Abstract The surface of irons and steels can be hardened by introducing nitrogen (nitriding), nitrogen and carbon (nitrocarburizing), or nitrogen and sulfur (sulfonitriding) into the surface. This article lists the principal reasons for nitriding and nitrocarburizing, and summarizes the typical...
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...
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
... Abstract Nitriding is a general term for all processes based on the addition of nitrogen to the surface of steel. When carbon is added along with the nitrogen, the process is called nitrocarburizing.  This article provides a detailed discussion on the functional and structural properties...
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Published: 01 August 2013
Fig. 13 The corrosion resistance of a nitrocarburized part will dramatically increase if the compound layer is composed of ε-carbonitrides and the [N + C] content in the compound layer is at least 8.6 mass%. The graph shows how the pitting potential jumps by more than 200 mV when crossing More
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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
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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
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Published: 01 October 2014
Fig. 30 Effect of nitrocarburization on the notched fatigue strength of two low-carbon PM steels with a density of 7.0 g/cm 3 (0.253 lb/in. 3 ) More