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plasma nitriding

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Published: 01 October 2011
Fig. 9.50 Corona discharge during plasma nitriding of an 8,618 kg (19,000 lb) stamping binder. Source: Ref 9.15 More
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Published: 01 December 2003
Fig. 9 Continuous dc power plasma nitriding More
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Published: 01 December 2003
Fig. 1 Schematic of a typical cold-wall continuous dc plasma nitriding system. Source: Ref 1 More
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Published: 01 December 2003
Fig. 4 Schematic of a hot-wall pulsed dc plasma nitriding furnace and associated equipment. Courtesy of Plateg GmbH More
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Published: 01 December 2003
Fig. 7 Hot-wall plasma nitriding furnace. Arrows indicate the air blowers that cool the external process vessel wall. Courtesy of Plateg GmbH More
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Published: 01 December 2003
Fig. 2 Masking of blind tapped holes on a component for plasma nitriding. More
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Published: 01 December 2003
Fig. 2 Workpiece during plasma nitriding with continuous dc glow discharge. Numerous micro-arcs are visible on the workpiece surface and may produce microscopic damage. A large concentration of micro-arcs can result in an avalanche-like increase in power. A big arc will form, destroying More
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Published: 01 December 2003
Fig. 3 The same workpiece as in Fig. 2 , but during plasma nitriding with pulsed dc glow discharge. Conditions such as vacuum pressure, gas mix, and power input remain the same. By using pulsed dc with a repetition frequency of about 10 kHz, the formation of micro-arcs is suppressed. Courtesy More
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Published: 01 December 2003
Fig. 6 Typical plasma nitriding PLC screen display. Courtesy of Plateg GmbH More
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Published: 01 December 2003
Fig. 5 Compound zone thickness versus nitriding time for 3% Cr-Mo-V steel plasma nitrided at 540 °C (1000 °F). The fit equation is y = 6.158 − 0.0294 + 0.933 x and r 2 = 0.952. Confidence and prediction intervals represent normal distribution and standard error (small More
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Published: 01 December 2003
Fig. 8 Compound zone thickness vs. nitriding time for 3% Cr-Mo-V steel plasma nitrided at 540 °C (1000 °F). This is a modified form of Fig. 5 from which the data for a “pure” γ′ compound zone were removed (144, 289, and 400 h). The fit equation is y = 5.438 – 0.049 x + 1.221 ± x and r More
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Published: 01 December 2003
Fig. 3 Comparative hardness of plasma nitrided versus gas nitrided type 422 stainless steel. Courtesy of Seco/Warwick Corporation More
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Published: 01 September 2022
Fig. 8 Typical microstructure of plasma-nitrided stainless steel. Source: Courtesy of Dr. Alphonsa Joseph and Mr. Narendrasinh Chauhan, IPR, Gandhinagar More
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Published: 01 December 2003
Fig. 4 Simple schematic of the layout of an early plasma (ion) nitriding furnace system More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900089
EISBN: 978-1-62708-350-8
...Comparison between hot-wall and cold-wall plasma ion nitriding systems Table 1 Comparison between hot-wall and cold-wall plasma ion nitriding systems Question Cold wall Hot wall At what temperature is plasma started? Room temperature At a suitable elevated temperature, usually...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900125
EISBN: 978-1-62708-350-8
...% Si, 0.70% Mn. Source: Ref 3 Fig. 2 Effect of alloying elements on depth of nitriding measured at 400 HV. Nitriding was carried out at 520 °C (970 °F) for 8 h. Source: Ref 3 Fig. 3 Comparative hardness of plasma nitrided versus gas nitrided type 422 stainless steel. Courtesy...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900139
EISBN: 978-1-62708-350-8
... Fig. 3 Compound zone thickness versus nitriding time for 42Cr Mo4 (AISI 4142 steel) plasma nitrided 3.3 mbar in the atmosphere of 25% nitrogen + 75% hydrogen at 570 °C (1060 °F) (upper curve), 530 °C (985 °F) (middle curve), and 450 °C (840 °F) (bottom curve) based on the experimental data...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410551
EISBN: 978-1-62708-265-5
... This chapter describes surface modification processes that go beyond conventional heat treatments, including plasma nitriding, plasma carburizing, low-pressure carburizing, ion implantation, physical and chemical vapor deposition, salt bath coating, and transformation hardening via high-energy...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320159
EISBN: 978-1-62708-347-8
... optimal gear performance with conventional nitriding have led researchers to work on a variety of novel and improved nitriding processes. Of these, ion/plasma nitriding offers some promising results, which are reviewed in this chapter. The chapter concludes with a case history describing the application...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900071
EISBN: 978-1-62708-350-8
...) in relation to power input versus time. Note that the voltage can be adjusted, as can the duration of the pulse. Courtesy of Plateg USA Fig. 9 Continuous dc power plasma nitriding Fig. 11 Schematic illustration of the oxynitriding process Fig. 12 Examples of oxynitrided piston...