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The Influence of High-Temperature Nitrogen Plasma-Based Ion Implantation on Niobium Creep Behavior
Joint Authors
Oliveira, Aline Capella de
Reis, Joares Lidovino dos
Oliveira, Rogerio Moraes
Reis, Danieli Aparecida Pereira
Source
Advances in Materials Science and Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-08-12
Country of Publication
Egypt
No. of Pages
7
Abstract EN
Niobium has been considered for applications in the aerospace sector, but its use at high temperatures is restricted, due to the great affinity of refractory metals with oxygen, which results in the formation of oxide layers and a decrease in their mechanical resistances.
In the present work, Nb samples were submitted to High-Temperature Nitrogen Plasma-Based Ion Implantation (HT-NPBII).
The process runs at a working pressure between 3 and 4 mbar and negative high voltage pulses of 7 kV/30 μs/300 Hz were applied to samples heated to 1000°C, at treatment times of 1 h, 4 h, and 8 h, respectively.
Microstructural and mechanical characterizations of the treated samples revealed the formation of a layer of Nb2N, with 3.0 μm thickness and increase in the surface hardness from 225 HV for the untreated material up to about 2498 HV, for samples treated during 8 h.
Creep tests were performed at 500°C and with loads varying from 25 to 40 MPa.
Results indicated a decrease in the secondary creep rate for treated specimens when compared to the untreated ones.
This behavior can be attributed to the formation of a nitride layer on the surface of Nb that acts as barrier to avoid the oxygen diffusion into the material under high temperature conditions.
American Psychological Association (APA)
Oliveira, Aline Capella de& Reis, Joares Lidovino dos& Oliveira, Rogerio Moraes& Reis, Danieli Aparecida Pereira. 2020. The Influence of High-Temperature Nitrogen Plasma-Based Ion Implantation on Niobium Creep Behavior. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-7.
https://search.emarefa.net/detail/BIM-1129680
Modern Language Association (MLA)
Oliveira, Aline Capella de…[et al.]. The Influence of High-Temperature Nitrogen Plasma-Based Ion Implantation on Niobium Creep Behavior. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-7.
https://search.emarefa.net/detail/BIM-1129680
American Medical Association (AMA)
Oliveira, Aline Capella de& Reis, Joares Lidovino dos& Oliveira, Rogerio Moraes& Reis, Danieli Aparecida Pereira. The Influence of High-Temperature Nitrogen Plasma-Based Ion Implantation on Niobium Creep Behavior. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-7.
https://search.emarefa.net/detail/BIM-1129680
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1129680