PMID- 33802436
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20210408
IS  - 1996-1944 (Print)
IS  - 1996-1944 (Electronic)
IS  - 1996-1944 (Linking)
VI  - 14
IP  - 5
DP  - 2021 Mar 3
TI  - Improvement of Corrosion Resistance of TiO(2) Layers in Strong Acidic Solutions 
      by Anodizing and Thermal Oxidation Treatment.
LID - 10.3390/ma14051188 [doi]
LID - 1188
AB  - By anodization and thermal oxidation at 600  degrees C, an oxide layer on Ti with 
      excellent corrosion resistance in strong acid solutions was prepared. The 
      structural properties of TiO(2) films before and after thermal oxidation were 
      investigated with methods of Scanning electron microscope (SEM), X-ray 
      photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). The electrochemical 
      characterization was recorded via electrochemical impedance spectroscopy, 
      potentiodynamic polarization and Mott-Schottky methods. XRD results show that a 
      duplex rutile/anatase structure formed after oxidation, and the amount of anatase 
      phase increased as the treatment time was prolonged from 3 to 9 h. XPS analysis 
      indicates that as the thermal oxidation time increased, more Ti vacancies were 
      present in the titanium oxide films, with decreased donor concentration. Longer 
      thermal oxidation promoted the formation of hydroxides of titanium on the 
      surface, which is helpful to improve the passive ability of the film. The 
      anodized and thermally oxidized Ti samples showed relatively high corrosion 
      resistance in 4 M HCl and 4 M H(2)SO(4) solutions at 100 +/- 5  degrees C. The passive 
      current density values of the thermally oxidized samples were five orders of 
      magnitude under the testing condition compared with that of the anodized sample. 
      With the oxidation time prolonged, the passive current density decreased further 
      to some extent.
FAU - Minhas, Badar
AU  - Minhas B
AD  - School of Material Science and Engineering, Beijing University of Chemical 
      Technology, Beijing 100029, China.
AD  - Institute for Advanced Materials and Technology, University of Science & 
      Technology Beijing, Beijing 100083, China.
FAU - Dino, Sahib
AU  - Dino S
AD  - School of Material Science and Engineering, Beijing University of Chemical 
      Technology, Beijing 100029, China.
AD  - Institute for Advanced Materials and Technology, University of Science & 
      Technology Beijing, Beijing 100083, China.
FAU - Zuo, Yu
AU  - Zuo Y
AD  - School of Material Science and Engineering, Beijing University of Chemical 
      Technology, Beijing 100029, China.
FAU - Qian, Hongchang
AU  - Qian H
AD  - Institute for Advanced Materials and Technology, University of Science & 
      Technology Beijing, Beijing 100083, China.
FAU - Zhao, Xuhui
AU  - Zhao X
AUID- ORCID: 0000-0003-2950-0298
AD  - School of Material Science and Engineering, Beijing University of Chemical 
      Technology, Beijing 100029, China.
AD  - Beijing Key Laboratory of Electrochemical Process and Technology for Materials, 
      Beijing University of Chemical Technology, Beijing 100029, China.
LA  - eng
PT  - Journal Article
DEP - 20210303
PL  - Switzerland
TA  - Materials (Basel)
JT  - Materials (Basel, Switzerland)
JID - 101555929
PMC - PMC7959320
OTO - NOTNLM
OT  - Ti
OT  - anodized film
OT  - corrosion resistance
OT  - harsh environments
OT  - thermal oxidation
COIS- The authors declare no conflict of interest.
EDAT- 2021/04/04 06:00
MHDA- 2021/04/04 06:01
PMCR- 2021/03/03
CRDT- 2021/04/03 01:11
PHST- 2021/02/06 00:00 [received]
PHST- 2021/02/24 00:00 [revised]
PHST- 2021/02/28 00:00 [accepted]
PHST- 2021/04/03 01:11 [entrez]
PHST- 2021/04/04 06:00 [pubmed]
PHST- 2021/04/04 06:01 [medline]
PHST- 2021/03/03 00:00 [pmc-release]
AID - ma14051188 [pii]
AID - materials-14-01188 [pii]
AID - 10.3390/ma14051188 [doi]
PST - epublish
SO  - Materials (Basel). 2021 Mar 3;14(5):1188. doi: 10.3390/ma14051188.