Details
| Original language | English |
|---|---|
| Article number | 1900568 |
| Journal | Steel Research International |
| Volume | 91 |
| Issue number | 4 |
| Early online date | 4 Jan 2020 |
| Publication status | Published - 30 Mar 2020 |
Abstract
A process of removal of surface oxides from stainless steels AISI 304 and 446 that involves reduction by residual carbon, followed by the formation and desorption of carbon monoxide, is studied by investigation of thermal desorption with quadrupole mass spectrometry (QMS) and secondary ion mass spectrometry (SIMS). Carbon monoxide desorption is studied as a function of time and temperature by QMS, and carbon diffusion due to heat treatment is studied with SIMS—twice as much carbon monoxide desorbs from AISI 304 overall and desorption sets in at 900 °C as opposed to 1100 °C for AISI 446. In samples heated to 900 °C, carbon shows surface enrichment in AISI 304 but depletion in AISI 446.
Keywords
- stainless steels, surface deoxidation, surface oxide removal, vacuum brazing, wetting
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Chemistry(all)
- Physical and Theoretical Chemistry
- Materials Science(all)
- Metals and Alloys
- Materials Science(all)
- Materials Chemistry
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In: Steel Research International, Vol. 91, No. 4, 1900568, 30.03.2020.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Surface Deoxidation Mechanism during Vacuum Heat Treatment of Stainless Steels AISI 304 and 446
AU - Strauß, Cornelia
AU - Wegewitz, Lienhard
AU - Schöler, Simon
AU - Holländer, Ulrich
AU - Möhwald, Kai
AU - Maus-Friedrichs, Wolfgang
N1 - Funding Information: The authors would like to thank Michal Schultz for SIMS measurements and the German Research Foundation (DFG) for financial support (grant nos. MA 1893/24‐1 and MO 881/22‐1).
PY - 2020/3/30
Y1 - 2020/3/30
N2 - A process of removal of surface oxides from stainless steels AISI 304 and 446 that involves reduction by residual carbon, followed by the formation and desorption of carbon monoxide, is studied by investigation of thermal desorption with quadrupole mass spectrometry (QMS) and secondary ion mass spectrometry (SIMS). Carbon monoxide desorption is studied as a function of time and temperature by QMS, and carbon diffusion due to heat treatment is studied with SIMS—twice as much carbon monoxide desorbs from AISI 304 overall and desorption sets in at 900 °C as opposed to 1100 °C for AISI 446. In samples heated to 900 °C, carbon shows surface enrichment in AISI 304 but depletion in AISI 446.
AB - A process of removal of surface oxides from stainless steels AISI 304 and 446 that involves reduction by residual carbon, followed by the formation and desorption of carbon monoxide, is studied by investigation of thermal desorption with quadrupole mass spectrometry (QMS) and secondary ion mass spectrometry (SIMS). Carbon monoxide desorption is studied as a function of time and temperature by QMS, and carbon diffusion due to heat treatment is studied with SIMS—twice as much carbon monoxide desorbs from AISI 304 overall and desorption sets in at 900 °C as opposed to 1100 °C for AISI 446. In samples heated to 900 °C, carbon shows surface enrichment in AISI 304 but depletion in AISI 446.
KW - stainless steels
KW - surface deoxidation
KW - surface oxide removal
KW - vacuum brazing
KW - wetting
UR - http://www.scopus.com/inward/record.url?scp=85078664984&partnerID=8YFLogxK
U2 - 10.1002/srin.201900568
DO - 10.1002/srin.201900568
M3 - Article
AN - SCOPUS:85078664984
VL - 91
JO - Steel Research International
JF - Steel Research International
SN - 1611-3683
IS - 4
M1 - 1900568
ER -