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glow discharge emission

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Published: 01 October 2014
Fig. 7 Glow discharge optical emission spectroscopy (GDOES) concentration profile of carbon and nitrogen in the compound layer of low-alloyed steel after plasma nitriding. Source: Ref 12 More
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Published: 01 June 2016
Fig. 2 Concentration depth profile (glow discharge optical emission spectroscopy) of a nitrided case. Aluminum alloy 5083; T N = 480 °C (900 °F); t N = 3 h More
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Published: 01 June 2016
Fig. 8 Glow discharge optical emission spectroscopy concentration depth profiles. (a) Aluminum alloy 360.0 nitrided at 470 °C (880 °F); t N,eff = 5 h. (b) Aluminum alloy 5083 nitrided at 470 °C (880 °F); t N,eff = 4 h More
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Published: 01 August 2013
Fig. 29 Glow-discharge optical emission spectrometry analysis of a nitrided C15. The peak in carbon indicates the boundary between the compound layer and diffusion zone. The position of this peak may be used to determine the compound layer thickness. Courtesy of IWT Bremen, Germany More
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Published: 01 August 2013
Fig. 30 Glow-discharge optical emission spectrometry analysis of a nitrocarburized AISI 1010, aiming for a high carbon concentration in the compound layer. The compound layer thickness is given at the point where the total percentage of carbon and nitrogen drops below approximately 6 mass%. More
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Published: 15 December 2019
Fig. 14 Glow discharge-optical emission spectroscopy quantitative depth profile of a ~0.5 μm oxide layer on a low-alloy steel. Note that the scale factors for chromium, manganese, silicon, and carbon are expanded. Source: Ref 8 . Reprinted with permission of Elsevier More
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001728
EISBN: 978-1-62708-178-8
... are often designed to minimize molecular emission. Each of the four types of emission sources; arcs, high-voltage sparks, glow discharges, and flames; has a set of physical characteristics with accompanying analytical assets and liabilities. The article also discusses the applications of each type...
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Published: 01 January 1994
spectroscopy). GDOES (GDMS), glow discharge optical emission spectroscopy (glow discharge mass spectroscopy). RBS (ISS), Rutherford backscattering spectroscopy (ion scattering spectroscopy). Source: Ref 3 More
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Published: 01 October 2014
Fig. 9 Composition-depth profiles of nitrided stainless steel AISI 316 as determined with glow discharge optical emission spectrometry (GDOES). (See also Fig. 7 and Fig. 10 .) Source: Ref 82 More
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Published: 01 November 2010
Fig. 6 Results from the simulation of nitriding and comparison with experimental data obtained by glow discharge optical emission spectroscopy (GD-OES) analysis. Carbon and nitrogen profiles in mass percent. Nitrided surface at origin of x -axis. Source: Ref 24 More
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006640
EISBN: 978-1-62708-213-6
... are often designed to minimize molecular emission. Less frequently, band intensities are used in place of atomic line intensities to measure mass fractions of elements making up the molecules. Fig. 3 Spectrum of N 2 recorded with nitrogen added to the argon gas flow of a glow discharge lamp, run...
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Published: 01 June 2016
discharge optical emission spectrometry) of sides A and B, respectively, of the sample. Source: Ref 76 More
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Published: 01 October 2014
Fig. 15 (a) Micrograph of low-temperature nitrocarburized austenitic stainless steel AISI 316 in an atmosphere of (partly) decomposed urea (in situ activation). The sample was heated to 490 °C (910 °F) in 45 min and thereafter immediately cooled. (b) Glow discharge optical emission More
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Published: 01 October 2014
Fig. 10 Hardness-depth profiles of nitrided AISI 316. The corresponding micrographs and composition profiles (determined with glow discharge optical emission spectrometry, GDOES) are shown in Fig. 5 and Fig. 7 , respectively. A profile for carburizing is shown for comparison. Lines More
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005793
EISBN: 978-1-62708-165-8
.... This article begins with an overview of the theoretical background and the range and limitations of glow-discharge plasma. It describes the plasma carburizing process, which is carried out with methane or propane. Plasma carburizing processes of sinter metals and stainless steels, and the influence of current...
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
... the workpiece (the cathode). The positively charged nitrogen ion then acquires an electron from the cathode (workpiece) and emits a photon. This photon emission during the formation of nitrogen ions to their atomic state results in the visible glow discharge ( Fig. 3 ) that is characteristic of plasma...
Book Chapter

By S.L. Rohde
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001288
EISBN: 978-1-62708-170-2
... for a dc glow discharge. Source: Ref 32 When an ion strikes the cathode, in addition to the generation of heat and the removal of neutral atoms and ions, there is about a 5 to 10% probability of secondary electron emission. These secondary electrons are then accelerated back across the dark space...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005900
EISBN: 978-1-62708-167-2
... principles for discharging in low-pressure atmosphere can be explained as follows. An electrical breakdown, which means the abrupt current flow between electrically isolated electrodes, can be caused by impact ionization or electron emission. Impact ionization takes place in air or other atmospheres...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006648
EISBN: 978-1-62708-213-6
... Abstract This article provides a brief account of glow discharge mass spectrometry (GDMS) for direct determination of trace elements in solid samples and for fast depth profiling in a great variety of innovative materials. It begins by describing the general principles of GDMS. This is followed...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006766
EISBN: 978-1-62708-295-2
... checks of certified standards with known compositions. Another common OES method is glow-discharge OES. Glow discharges (GDs) are low-pressure direct current discharges that are characterized primarily by the current density in the discharge and by the mechanism of electron production at the cathodic...