(Ti,Al)O2 whiskers grown during glow discharge nitriding of Ti-6Al-7Nb alloy
Authors:
- Krzysztof Szymkiewicz,
- Jerzy Morgiel,
- Łukasz Maj,
- Małgorzata Pomorska
Abstract
Plasma nitriding of titanium alloys is capable of effective surface hardening at temperatures significantly lower than gas nitriding, but at a cost of much stronger surface roughening. Especially interesting are treatments performed at the lower end of the temperature window used in such cases, as they are least damaging to highly polished parts. Therefore identifying the most characteristic defects is of high importance. The present work was aimed at identifying the nature of pin-point bumps formed at the glow discharged plasma nitrided Ti-6Al-7Nb alloy using plan-view scanning and cross-section transmission electron microscopy methods. It helped to establish that these main surface defects developed at the treated surface are (Ti,Al)O2 nano-whiskers of diameter from 20 nm to 40 nm, and length up to several hundreds of nanometers. The performed investigation confirmed that the surface imperfection introduced by plasma nitriding at the specified range should be of minor consequences to the mechanical properties of the treated material.
- Record ID
- CUT475e9e4b2c944a6b8e11c92b179d9a2d
- Publication categories
- ;
- Author
- Journal series
- Materials, ISSN , e-ISSN 1996-1944, Biweekly
- Issue year
- 2021
- Vol
- 14
- No
- 10
- Pages
- [1-5]
- Article number
- 2658
- Other elements of collation
- il. (w tym kolor.); Bibliografia (na s.) - 5; Bibliografia (liczba pozycji) - 12; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 14, Iss. 10
- Keywords in English
- (Ti,Al)O2 whiskers, plasma nitriding, Ti6Al7Nb alloy, TEM
- DOI
- DOI:10.3390/ma14102658 Opening in a new tab
- URL
- https://www.mdpi.com/1996-1944/14/10/2658 Opening in a new tab
- Related project
- Międzynarodowe interdyscyplinarne studia doktoranckie z zakresu nauk o materiałach z wykładowym językiem angielskim. . Project leader at PK: , ,
- Language
- eng (en) English
- License
- Score (nominal)
- 0
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT475e9e4b2c944a6b8e11c92b179d9a2d/
- URN
urn:pkr-prod:CUT475e9e4b2c944a6b8e11c92b179d9a2d
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.