Abstract
In order to test the propensity to form soot in the vacuum carburizing method, the pyrolysis of acetylene, methane, propane, and cyclohexane as vacuum carburizing media was studied at typical operating conditions of vacuum carburizing. Under the test conditions, methane is the most stable media and propane and cyclohexane are the easiest to decompose. The propensity to form soot in the vacuum carburizing furnace varies, then, according to the media. The pyrolysis of the hydrocarbons was also calculated by means of a reaction kinetics model with a software package for combustion analysis. This model includes Polycyclic Aromatic Hydrocarbons (PAH) which are known as precursors to soot formation and growth. The calculated variation of the concentration of the pyrolyzed hydrocarbons with time agreed qualitatively with the experimental results.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 17th IFHTSE Congress |
| Publisher | The Japan Society for Heat Treatment (JSHT) |
| Pages | 121-124 |
| Number of pages | 4 |
| Volume | 1 |
| ISBN (Print) | 9780000000002 |
| Publication status | Published - 2009 |
| Event | 17th International Federation for Heat Treatment and Surface Engineering Congress 2008, IFHTSE 2008 - Kobe, Japan Duration: 2008 Oct 26 → 2008 Oct 28 |
Other
| Other | 17th International Federation for Heat Treatment and Surface Engineering Congress 2008, IFHTSE 2008 |
|---|---|
| Country | Japan |
| City | Kobe |
| Period | 08/10/26 → 08/10/28 |
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Keywords
- Hydrocarbon
- Low pressure carburizing
- Pyrolysis
- Sooting
- Vacuum carburizing
ASJC Scopus subject areas
- Surfaces, Coatings and Films
- Condensed Matter Physics
- Mechanics of Materials
Cite this
Pyrolysis of hydrocarbons as vacuum carburizing media. / Ohashi, Ken; Kunioshi, Nilson.
Proceedings of the 17th IFHTSE Congress. Vol. 1 The Japan Society for Heat Treatment (JSHT), 2009. p. 121-124.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Pyrolysis of hydrocarbons as vacuum carburizing media
AU - Ohashi, Ken
AU - Kunioshi, Nilson
PY - 2009
Y1 - 2009
N2 - In order to test the propensity to form soot in the vacuum carburizing method, the pyrolysis of acetylene, methane, propane, and cyclohexane as vacuum carburizing media was studied at typical operating conditions of vacuum carburizing. Under the test conditions, methane is the most stable media and propane and cyclohexane are the easiest to decompose. The propensity to form soot in the vacuum carburizing furnace varies, then, according to the media. The pyrolysis of the hydrocarbons was also calculated by means of a reaction kinetics model with a software package for combustion analysis. This model includes Polycyclic Aromatic Hydrocarbons (PAH) which are known as precursors to soot formation and growth. The calculated variation of the concentration of the pyrolyzed hydrocarbons with time agreed qualitatively with the experimental results.
AB - In order to test the propensity to form soot in the vacuum carburizing method, the pyrolysis of acetylene, methane, propane, and cyclohexane as vacuum carburizing media was studied at typical operating conditions of vacuum carburizing. Under the test conditions, methane is the most stable media and propane and cyclohexane are the easiest to decompose. The propensity to form soot in the vacuum carburizing furnace varies, then, according to the media. The pyrolysis of the hydrocarbons was also calculated by means of a reaction kinetics model with a software package for combustion analysis. This model includes Polycyclic Aromatic Hydrocarbons (PAH) which are known as precursors to soot formation and growth. The calculated variation of the concentration of the pyrolyzed hydrocarbons with time agreed qualitatively with the experimental results.
KW - Hydrocarbon
KW - Low pressure carburizing
KW - Pyrolysis
KW - Sooting
KW - Vacuum carburizing
UR - http://www.scopus.com/inward/record.url?scp=84928164494&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84928164494&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84928164494
SN - 9780000000002
VL - 1
SP - 121
EP - 124
BT - Proceedings of the 17th IFHTSE Congress
PB - The Japan Society for Heat Treatment (JSHT)
ER -