Details
| Original language | English |
|---|---|
| Pages (from-to) | 694-699 |
| Number of pages | 6 |
| Journal | Materials Today: Proceedings |
| Volume | 30 |
| Issue number | 3 |
| Early online date | 24 Feb 2020 |
| Publication status | Published - 2020 |
Abstract
Investigations on the atmospheric plasma nitriding of Ti-6Al-4V are presented. Different operating parameters were varied, e.g. nitriding time, sample temperature and plasma gas composition. The plasma process was realized by a protective argon gas flow as well as by the operation in an argon glove box to investigate the influence of the residual oxygen on the sample surface. The nitride layers were characterized by X-ray diffraction and scanning electron microscopy. Also microhardness measurements were performed on cross sections. The results show that the nitriding success strongly depends on the residual oxygen concentration in the process environment. The use of argon as a local protective gas in the process leads to a reduction of this involuntary oxidation, whereby the quality of the protective gas coverage correlates directly with the quality of the nitride layer formation. A surface hardening of more than 400% compared to the base material could be achieved.
Keywords
- Nitride layers, Non-transmitted plasma arc, Plasma arc nitriding, Surface modification, Ti-6Al-4V, Titanium alloys
ASJC Scopus subject areas
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In: Materials Today: Proceedings, Vol. 30, No. 3, 2020, p. 694-699.
Research output: Contribution to journal › Conference article › Research
}
TY - JOUR
T1 - Plasma nitriding Ti-6Al-4V with the aid non-transmitted plasma-arc using different protection atmosphere
AU - Gushchina, Marina
AU - Carstensen, Torben
AU - Maier, Hans Jürgen
AU - Hassel, Thomas
N1 - Funding information: The results presented in this paper were obtained within the Collaborative Research Centre (CRC) 871 ‘‘Regeneration of Complex Capital Goods’’ in the subproject B6 (project number: 119193472). The authors thank the German Research Foundation (DFG) for the financial and organizational support of this project, especially for the opportunities to promote the international exchange of guest researchers.
PY - 2020
Y1 - 2020
N2 - Investigations on the atmospheric plasma nitriding of Ti-6Al-4V are presented. Different operating parameters were varied, e.g. nitriding time, sample temperature and plasma gas composition. The plasma process was realized by a protective argon gas flow as well as by the operation in an argon glove box to investigate the influence of the residual oxygen on the sample surface. The nitride layers were characterized by X-ray diffraction and scanning electron microscopy. Also microhardness measurements were performed on cross sections. The results show that the nitriding success strongly depends on the residual oxygen concentration in the process environment. The use of argon as a local protective gas in the process leads to a reduction of this involuntary oxidation, whereby the quality of the protective gas coverage correlates directly with the quality of the nitride layer formation. A surface hardening of more than 400% compared to the base material could be achieved.
AB - Investigations on the atmospheric plasma nitriding of Ti-6Al-4V are presented. Different operating parameters were varied, e.g. nitriding time, sample temperature and plasma gas composition. The plasma process was realized by a protective argon gas flow as well as by the operation in an argon glove box to investigate the influence of the residual oxygen on the sample surface. The nitride layers were characterized by X-ray diffraction and scanning electron microscopy. Also microhardness measurements were performed on cross sections. The results show that the nitriding success strongly depends on the residual oxygen concentration in the process environment. The use of argon as a local protective gas in the process leads to a reduction of this involuntary oxidation, whereby the quality of the protective gas coverage correlates directly with the quality of the nitride layer formation. A surface hardening of more than 400% compared to the base material could be achieved.
KW - Nitride layers
KW - Non-transmitted plasma arc
KW - Plasma arc nitriding
KW - Surface modification
KW - Ti-6Al-4V
KW - Titanium alloys
UR - http://www.scopus.com/inward/record.url?scp=85093526020&partnerID=8YFLogxK
U2 - 10.1016/j.matpr.2020.01.524
DO - 10.1016/j.matpr.2020.01.524
M3 - Conference article
VL - 30
SP - 694
EP - 699
JO - Materials Today: Proceedings
JF - Materials Today: Proceedings
SN - 2214-7853
IS - 3
ER -