conductedBy
- Biermann, Horst Person
- Böcker, Jan Person
- Dalke, Anke Person
- Jafarpour, Saeed M. Person
- Pipa, Andrei Person
- Puth, Alexander Person
- Röpcke, Jürgen Person
- van Helden, Jean-Pierre Person
Laser absorption spectroscopy for plasma-assisted thermochemical treatment
Plasma Study
Plasma-kg
hasMedium
- CH4 Medium
- H2 Medium
- N2 Medium
- N2-H2 gas mixture Medium
- O2 Medium
hasOutput
hasPlasmaSource
- active screen plasma nitrocarburizing (ASPNC) reactor Plasma Source
hasTarget
- assembly of interconnected steel rings Target
- model probe Target
- workpiece Target
hasTopic
- Plasma Chemical Processes Research Topic
- nitrocarburizing Research Topic
investigates
involves
- N2 Medium
- model probe Target
- pulsed DC discharge plasma Plasma
usesConfiguration
- Configuration for ASPNC reactor: cathodic potential with a pulsed DC high voltage of 1 kHz frequency at a 60 % duty cycle; workload temperature maintained at 813 K (540 °C); AS power about 7.3 kW; bias power 1.25 kW; total flow of 80 slh; pressure of 3 mbar
- Configuration for cleaning phase: no CH4 flow for about 3 hours
- Configuration for conditioning phase: CH4 flow of 8 slh (10% of total flow) for about 1 hour
- Configuration for measurement set 1: O2 flow of 4.8 slh (6%)
- Configuration for measurement set 2: O2 flow of 1.6 slh (2%)
- Configuration for pre-heating phase: N2-H2 gas mixture; AS at full power; step-wise increase of the bias power
- Configuration for spectroscopic measurement: 5 scans per spectral window
usesDevice
- MHF-21047, DRS Daylight Solutions Inc. Diagnostic Device
- MHF-41074, DRS Daylight Solutions Inc. Diagnostic Device
- detector Diagnostic Device
- etalon (3 inch, Ge) Diagnostic Device
- mass flow controllers Diagnostic Device
- thermoelectric sensor (TE) Diagnostic Device
usesMaterialEntity
- CH4 Medium
- N2 Medium
- assembly of interconnected steel rings Target
usesMethod
- Laser Absorption Spectroscopy Diagnostic Method
- calibration Method
- cleaning Method
- conditioning Method
- plasma-assisted thermochemical treatment Method
- pre-heating Method
- proportional-integral-derivative (PID) control Method