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Article
Growth and characterization of the oxide scales and core/shell nanowires on Ti-6Al-4 V particles during thermal oxidation
Ceramics International (2015)
Abstract

Nanowires were grown on as-received and milled particles of Ti-6Al-4 V (Ti64) alloy under an optimum condition of 750 degrees C in an Ar atmosphere containing 15 ppm of oxygen. The as-grown nanowires and the underneath oxide scales developed on Ti64 particles were characterized by X-ray diffiactometry (XRD), field emission scanning electron microscopy (FESEM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), scanning transmission electron microscopy (STEM) equipped with energy dispersive X-ray spectroscope (EDS). Results revealed the formation of oxide scales consisting of double layers on the surface of Ti64 particles. The outer oxide scale was a mixture of Al2O3 and TiO2 whereas the inner oxide scale was solely TiO2. An unoxidized core was present inside depending On the size of the Ti64 particles at the initial state. The thickness of the outer oxide scale was also dependent on the size of the Ti64 particles. The nanowires grew in the outward direction from the outer oxide scale during thermal oxidation. The as-grown nanowires had fine and thick dimensions. Both types of nanowires had a core-shell structure where the core was made of TiO2 and the shell was Al2O3. It was seen that both residual and induced stress played a role for the growth of nanowires on Ti64 particles during thermal oxidation. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved. Link to Full-Text Articles : http://www.sciencedirect.com/science/article/pii/S0272884214018951

Keywords
  • Nanowire,
  • Core-shell structure,
  • Thermal oxidation,
  • Ti-6Al-4 V (Ti64),
  • alloy,
  • TIO2,
  • NANOSTRUCTURES,
  • ARRAYS,
  • GAS,
  • ALLOY,
  • TEMPERATURE,
  • FABRICATION,
  • NANOFIBERS,
  • SUBSTRATE,
  • TITANIUM
Publication Date
April, 2015
Publisher Statement
ISI Document Delivery No.: CC2MZ Times Cited: 0 Cited Reference Count: 32 Cited References: Arafat MM, 2013, CERAM INT, V39, P6517, DOI 10.1016/j.ceramint.2013.01.084 BIAO W, 2010, CHINESE SCI BULL, V55, P228 Cano IG, 2007, J MATER SCI, V42, P9331, DOI 10.1007/s10853-007-1871-8 Carney CM, 2005, SENSOR ACTUAT B-CHEM, V108, P29, DOI 10.1016/j.snb.2004.11.058 Chang JF, 2002, SENSOR ACTUAT B-CHEM, V84, P258, DOI 10.1016/S0925-4005(02)00034-5 Choi SC, 2012, PHYS SCRIPTA, V85, DOI 10.1088/0031-8949/85/02/025801 Cui JB, 2012, MATER CHARACT, V64, P43, DOI 10.1016/j.matchar.2011.11.017 Diebold U, 2003, SURF SCI REP, V48, P53, DOI 10.1016/S0167-5729(02)00100-0 Dinan B., 2012, THESIS OHIO STATE U Dinan BJ, 2013, MATER TECHNOL, V28, P280, DOI 10.1179/1753555713Y.0000000059 DU HL, 1994, CORROS SCI, V36, P631, DOI 10.1016/0010-938X(94)90069-8 ESHELBY JD, 1953, PHYS REV, V91, P755, DOI 10.1103/PhysRev.91.755.2 Francioso L, 2008, SENSOR ACTUAT B-CHEM, V130, P70, DOI 10.1016/j.snb.2007.07.074 Guleryuz H, 2009, J ALLOY COMPD, V472, P241, DOI 10.1016/j.jallcom.2008.04.024 Ha HK, 1996, APPL PHYS LETT, V68, P2965, DOI 10.1063/1.116370 Harilal M, 2014, MATER CHARACT, V90, P7, DOI 10.1016/j.matchar.2014.01.011 Hu A., 2011, NANOSCALE RES LETT, V6, P2 Hu PQ, 2010, ACS APPL MATER INTER, V2, P3263, DOI 10.1021/am100707h Huo KF, 2009, J NANOSCI NANOTECHNO, V9, P3341, DOI 10.1166/jnn.2009.VC09 Huo KF, 2008, APPL PHYS LETT, V93, DOI 10.1063/1.2955519 Kumar A, 2004, J PHYS-CONDENS MAT, V16, P8531, DOI 10.1088/0953-8984/16/47/007 Landau O, 2009, CHEM MATER, V21, P9, DOI 10.1021/cm802498c Li HL, 2012, CERAM INT, V38, P5791, DOI 10.1016/j.ceramint.2012.04.026 Peng XS, 2004, J MATER CHEM, V14, P2542, DOI 10.1039/b404750h Peng XS, 2005, NANOTECHNOLOGY, V16, P2389, DOI 10.1088/0957-4484/16/10/066 Rout CS, 2007, J PHYS D APPL PHYS, V40, P2777, DOI 10.1088/0022-3727/40/9/016 Sen S, 2010, SENSOR ACTUAT B-CHEM, V147, P453, DOI 10.1016/j.snb.2010.04.016 Tan AW, 2014, CERAM INT, V40, P8301, DOI 10.1016/j.ceramint.2014.01.032 Tang LQ, 2013, CERAM INT, V39, P2303, DOI 10.1016/j.ceramint.2012.08.077 Tharsika T, 2014, CERAM INT, V40, P7601, DOI 10.1016/j.ceramint.2013.11.124 Xia YN, 2003, ADV MATER, V15, P353, DOI 10.1002/adma.200390087 Yoo S, 2004, ADV MATER, V16, P260, DOI 10.1002/adma.200305781 Arafat, M. M. Haseeb, A. S. M. A. Akbar, S. A. High Impact Research Grant (HIR-MOHE) [UM.C/HIR/MOHE/ENG/26]; University of Malaya Research Grant (UMRG) [RP021-2012D] The authors acknowledge the financial support of High Impact Research Grant (HIR-MOHE, Project No. UM.C/HIR/MOHE/ENG/26) and University of Malaya Research Grant (UMRG, Project No. RP021-2012D). 0 ELSEVIER SCI LTD OXFORD CERAM INT B
Citation Information
"Growth and characterization of the oxide scales and core/shell nanowires on Ti-6Al-4 V particles during thermal oxidation" Ceramics International Vol. 41 Iss. 3 (2015)
Available at: http://works.bepress.com/facultyofengineering_universityofmalaya/213/