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OPTICAL EMISSION SPECTROSCOPY OF PULSED DC PLASMAS: OPTICAL EMISSION SPECTROSCOPY OF PULSED-DC PLASMAS FOR SURFACE NITRIDING OF AISI-304 STAINLESS STEEL - Couverture souple

Qayyum, Abdul

 
9783639272413: OPTICAL EMISSION SPECTROSCOPY OF PULSED DC PLASMAS: OPTICAL EMISSION SPECTROSCOPY OF PULSED-DC PLASMAS FOR SURFACE NITRIDING OF AISI-304 STAINLESS STEEL
Couverture souple
ISBN 10 : 3639272412 ISBN 13 : 9783639272413
Editeur : VDM Verlag Dr. Müller, 2010

Synopsis

Glow discharge -optical emission spectroscopy of different plasma gases such as H2 , N2 , N2-H2 and Ar-N2 generated by a cost effective 50 Hz pulsed-DC electrical power source is carried out to investigate the different excitation and ionization processes involved in the production of active species, for surface nitriding of materials. Spectroscopic study of hydrogen Balmer - line profiles are performed in an abnormal glow region of hydrogen plasma for investigating the dependencies of their line shapes and intensities on discharge parameters. A technique based on determining the relative intensities of neutral atomic hydrogen emission lines is used to evaluate the electron temperature whereas the electron density is extracted from Stark broadening ( FWHM ) of the H-beta emission profile . The plasma parameters are found to be strongly dependent on discharge conditions. The effect of inert gases such as Ar, He, etc on the production of active species is also investigated under different discharge conditions. The metastable states of these gases are found to be useful for enhancing the concentration of active species.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Présentation de l'éditeur

Glow discharge -optical emission spectroscopy of different plasma gases such as H2 , N2 , N2-H2 and Ar-N2 generated by a cost effective 50 Hz pulsed-DC electrical power source is carried out to investigate the different excitation and ionization processes involved in the production of active species, for surface nitriding of materials. Spectroscopic study of hydrogen Balmer - line profiles are performed in an abnormal glow region of hydrogen plasma for investigating the dependencies of their line shapes and intensities on discharge parameters. A technique based on determining the relative intensities of neutral atomic hydrogen emission lines is used to evaluate the electron temperature whereas the electron density is extracted from Stark broadening ( FWHM ) of the H-beta emission profile . The plasma parameters are found to be strongly dependent on discharge conditions. The effect of inert gases such as Ar, He, etc on the production of active species is also investigated under different discharge conditions. The metastable states of these gases are found to be useful for enhancing the concentration of active species.

Biographie de l'auteur

Dr. Abdul Qayyum was born in Bhimber AJ & K , Pakistan in 1965. He received the M. Sc and PhD degrees in Physics from the Quaid- i- Azam University, Islamabad. In 2006 , He joined the Plasma Technology Laboratory , GC University, Lahore as Assistant Professor where his research was focused on the plasma characterization for material processing.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
VDM Verlag Dr. Müller
Date d'édition
2010
Langue
anglais
ISBN 10 
3639272412
ISBN 13 
9783639272413
Reliure
Broché
Nombre de pages
160
Coordonnées du fabricant
non disponible
Personne responsable
non disponible