Surface modification of γ-TiAl alloys by acetylene plasma deposition
Surfaces of two γ-TiAl alloys, Ti-47 at% Al-2at% Nb-2 at% Cr (MJ12) and Ti-47 at% Al-2 at% Nb-2 at% Mn + 0.8 at% TiB2 (MJ47), have been modified by acetylene plasma deposition at bias voltages of -4, -5 and -6 kV for 3.6 × 103 s (1 h) and 1.44 × 104 s (4 h). Knoop hardness (HK) of the alloys is incr...
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th-cmuir.6653943832-50662014-08-30T02:56:07Z Surface modification of γ-TiAl alloys by acetylene plasma deposition Narksitipan S. Thongtem T. McNallan M. Thongtem S. Surfaces of two γ-TiAl alloys, Ti-47 at% Al-2at% Nb-2 at% Cr (MJ12) and Ti-47 at% Al-2 at% Nb-2 at% Mn + 0.8 at% TiB2 (MJ47), have been modified by acetylene plasma deposition at bias voltages of -4, -5 and -6 kV for 3.6 × 103 s (1 h) and 1.44 × 104 s (4 h). Knoop hardness (HK) of the alloys is increased with the increase of bias voltage and prolonged time for the deposition. HK of MJ12 and MJ47 deposited at -6 kV for 1.44 × 104 s is, respectively, 3.36 and 3.32 times as hard as the untreated alloys. SEM and AFM analyses show that the deposited alloys compose of a number of nano-dots which reflect their surface properties. The phases analyzed by XRD are in accord with the elements analyzed by EDX. © 2005 Elsevier B.V. All rights reserved. 2014-08-30T02:56:07Z 2014-08-30T02:56:07Z 2006 Article 01694332 10.1016/j.apsusc.2005.11.086 ASUSE http://www.scopus.com/inward/record.url?eid=2-s2.0-33748980224&partnerID=40&md5=fe49369192b4b2b23e66e3ef25f35812 http://cmuir.cmu.ac.th/handle/6653943832/5066 English |
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Surfaces of two γ-TiAl alloys, Ti-47 at% Al-2at% Nb-2 at% Cr (MJ12) and Ti-47 at% Al-2 at% Nb-2 at% Mn + 0.8 at% TiB2 (MJ47), have been modified by acetylene plasma deposition at bias voltages of -4, -5 and -6 kV for 3.6 × 103 s (1 h) and 1.44 × 104 s (4 h). Knoop hardness (HK) of the alloys is increased with the increase of bias voltage and prolonged time for the deposition. HK of MJ12 and MJ47 deposited at -6 kV for 1.44 × 104 s is, respectively, 3.36 and 3.32 times as hard as the untreated alloys. SEM and AFM analyses show that the deposited alloys compose of a number of nano-dots which reflect their surface properties. The phases analyzed by XRD are in accord with the elements analyzed by EDX. © 2005 Elsevier B.V. All rights reserved. |
| format |
Article |
| author |
Narksitipan S. Thongtem T. McNallan M. Thongtem S. |
| spellingShingle |
Narksitipan S. Thongtem T. McNallan M. Thongtem S. Surface modification of γ-TiAl alloys by acetylene plasma deposition |
| author_facet |
Narksitipan S. Thongtem T. McNallan M. Thongtem S. |
| author_sort |
Narksitipan S. |
| title |
Surface modification of γ-TiAl alloys by acetylene plasma deposition |
| title_short |
Surface modification of γ-TiAl alloys by acetylene plasma deposition |
| title_full |
Surface modification of γ-TiAl alloys by acetylene plasma deposition |
| title_fullStr |
Surface modification of γ-TiAl alloys by acetylene plasma deposition |
| title_full_unstemmed |
Surface modification of γ-TiAl alloys by acetylene plasma deposition |
| title_sort |
surface modification of γ-tial alloys by acetylene plasma deposition |
| publishDate |
2014 |
| url |
http://www.scopus.com/inward/record.url?eid=2-s2.0-33748980224&partnerID=40&md5=fe49369192b4b2b23e66e3ef25f35812 http://cmuir.cmu.ac.th/handle/6653943832/5066 |
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1681420355245178880 |