CHEM02200704003 Nilamadhab Pandhy - Homi Bhabha National ...

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4 C H A P T E R 4 73 # $%&' 4.1 Introduction…………………………………………………………….. 73 4.2 Results and discussion………………………………………………….. 77 4.2.1 Ex-situ surface morphology study……………………………… 77 4.2.2 Potentiodynamic polarization study……………………………. 81 4.2.3 In-situ electrochemical AFM surface morphology study………. 84 4.2.4 X-ray photoelectron spectroscopy study………………………. 89 5 C H A P T E R 5 96 (#$%&' 5.1 Introduction…………………………………………………………...... 96 5.2 Results and discussion…………………………………………………. 99 5.2.1 Surface morphology study by AFM…………………………… 99 5.2.2 Elemental analysis using secondary ion mass spectroscopy…… 100 5.2.3 Study of phase formation by GIXRD………………………….. 102 5.2.4 Metallographic characterization……………………………….. 103 5.2.5 X-ray photoelectron spectroscopy study………………………. 104 5.2.6 Open circuit potential vs. time measurement…………………... 106 5.2.7 Potentiodynamic polarization study……………………………. 107 5.2.8 Electrochemical impedance measurement……………………... 110
5.2.9 Surface morphology analysis after potentiodynamic polarization…………………………………………………….. 113 6 C H A P T E R 6 116 ))*+"!),)*+ $%&' 6.1 Introduction…………………………………………………………….. 116 6.2 Results and discussion………………………………………………….. 119 6.2.1 Corrosion behaviour of Ti coated 304L SS in nitric acid medium…………………………………………………………. 119 6.2.1.1 Phase and morphology characterization………………. 119 6.2.1.2 Open circuit potential vs. time measurement…………. 120 6.2.1.3 Electrochemical impedance analysis............................. 123 6.2.1.4 Potentiodynamic polarization study………………….. 127 6.2.1.5 Morphological investigation after potentiodynamic polarization study……………………………………. 129 6.2.2 Corrosion behaviour of TiO 2 coated 304L SS in nitric acid medium……………………………………………..................... 131 6.2.2.1 Phase and morphology characterization………………... 131 6.2.2.2 Open circuit potential vs. time measurement…………... 133 6.2.2.3 Electrochemical impedance analysis………………….... 135 6.2.2.4 Potentiodynamic polarization study……………………. 139 6.2.2.5 Morphological investigation after potentiodynamic polarization study……………………………………… 143 6.2.3 Corrosion behaviour of duplex Ti-TiO 2 coated 304L SS in nitric acid medium……………………………………................ 144 6.2.3.1 Phase and morphology characterization..................... 144 -
Page 1 and 2: " "! %&''( )*
Page 4 and 5: ! " # $ % &
Page 6 and 7: $* +%#, The author wish to express
Page 8 and 9: 2.3 Effect of alloying elements on
Page 12 and 13: 6.2.3.2 Open circuit potential vs.
Page 14 and 15: eprocessing can be recovered, and c
Page 16 and 17: The ex-situ study of passive film w
Page 18 and 19: Fig.3.10: Schematic of electrical e
Page 20 and 21: Fig.6.11: Polarization study of unc
Page 22 and 23: AISI: American Institute of Steel I
Page 24 and 25: Chapter 1 C H A P T E R 1 Spent Nuc
Page 26 and 27: Chapter 1 1.3 Challenges in spent n
Page 28 and 29: Chapter 1 corrosion resistance. The
Page 30 and 31: Chapter 1 choice of zirconium is du
Page 32 and 33: C H A P T E R2
Page 34 and 35: Chapter 2 temperature, (c) higher i
Page 36 and 37: Chapter 2 Chromium in excess of 12
Page 38 and 39: Chapter 2 2. 3 Effect of alloying e
Page 40 and 41: Chapter 2 The twins are identified
Page 42 and 43: Chapter 2 and at temperature around
Page 44 and 45: Chapter 2 of adsorption of oxygen o
Page 46 and 47: Chapter 2 transpassive dissolution
Page 48 and 49: Chapter 2 healing chromium oxide fi
Page 50 and 51: Chapter 2 their segregation to the
Page 52 and 53: Chapter 2 is intimately related to
Page 54 and 55: Chapter 2 in nature because the dis
Page 56 and 57: C H A P T E R3
Page 58 and 59: Chapter 3 3.1.1.2 Specimen preparat
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Chapter 3 ionized. However, differe
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Chapter 3 various industrial applic
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Chapter 3 In the present investigat
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Chapter 3 3.1.3.2 Atomic force micr
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Chapter 3 present on the surface fo
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Chapter 3 necessary condition is th
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Chapter 3 Y m is the sputter yield.
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Chapter 3 Fig. 3.7: Schematic of X-
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Chapter 3 rate of 10Å/min using 5
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Chapter 3 different doses of nitrog
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Chapter 3 The modulus of electroche
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Chapter 3 equivalent circuit as sho
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Chapter 3 reference electrode with
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Chapter 3 for understanding the pas
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C H A P T E R4
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Chapter 4 encountered by all materi
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Chapter 4 pitting, and intergranula
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Chapter 4 The ridged structure, and
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Chapter 4 nitric acid is that the b
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Chapter 4 Potential (V) Vs Ag/AgCl
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Chapter 4 4.2.3 In-situ electrochem
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Chapter 4 The surface morphologies
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Chapter 4 a b c d Opening up of gra
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Chapter 4 Intensity (Arbitrary unit
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Chapter 4 The chromium, and oxygen
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Chapter 4 Intensity (Arbitrary unit
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C H A P T E R5
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Chapter 5 elements, and often impar
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Chapter 5 5.2 Results and discussi
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Chapter 5 Presence of oxygen is due
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Chapter 5 was an increase in marten
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Chapter 5 formation of Cr 2 N was a
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Chapter 5 electrochemical environme
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Chapter 5 N + Dose E corr (mV vs. A
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Chapter 5 layer capacitance (C dl )
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Chapter 5 correlation between surfa
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Chapter 5 boundary dissolution was
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Chapter 6 C H A P T E R 6
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Chapter 6 193]. As a single phase c
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Chapter 6 particles range from 8×1
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Chapter 6 Results revealed that in
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Chapter 6 The change over from capa
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Chapter 6 The impedance parameters
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Chapter 6 Conc. Substrate condition
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Chapter 6 6.6a-d. The uncoated spec
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Chapter 6 (55.18°) respectively, w
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Chapter 6 OCP shifted in noble dire
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Chapter 6 The high phase angle over
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Chapter 6 Fig. 6.10d: Log f vs. Log
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Chapter 6 Fig. 6.11b: Polarization
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Chapter 6 Covalent aspect of lattic
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Chapter 6 As compared to uncoated s
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Chapter 6 6.2.3.2 Open circuit pote
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Chapter 6 Similarly, the plots for
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Chapter 6 for the duplex coating, a
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Chapter 6 Fig.6.16b: Polarization s
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Chapter 6 6.2.3.5 Morphological exa
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Chapter 7 C H A P T E R 7 The cha
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Chapter 7 1. Surface morphology exa
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Chapter 7 6 Duplex Ti-TiO 2 coated
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Chapter 7 EC-SPM study on effect
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[1] Baldev Raj, U. Kamachi Mudali,
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[37] G. Okamoto, T. Shibata, Corros
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[79] M. Moens, M. Van Craen, F.C. A
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[117] R.E.Williford, C.F.Windisch J
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[157] N. Mottu, M. Vayer, R. Erre,
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[197] M. Metikos Hukovic, M. Ceraj
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[19] H. H. Uhlig, Corros Sci, 19 (1
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[57] J. F. Ziegler, J. P. Biersack,
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[97] I. Betova, M. Bojinov, V. Kara
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[139] V. Ashworth, R. P. M. Procter
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[176] G. Frankel, G. Grundmeier, H.
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List of publications 1. Referred
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CHEM02200704003 Nilamadhab Pandhy - Homi Bhabha National ...

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