Multi-component boron coatings on low carbon steel AISI 1018

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LIST OF FIGURES (Continued) Figure Page 4.16 The microfluorescence of B-Mo-Fe system 91 4.17 The plot between the microhardness and the depth from the surface of boride coating in the <strong>boron</strong>-molybdenum-iron (B-Mo-Fe) system 92 4.18 The corrosion resistance of boride coating in the <strong>boron</strong>-molybdenum-iron (B- Mo-Fe) system (in 0.5 M H2SO4) 93 4.19 The high temperature oxidation resistance of boride coating in the <strong>boron</strong>molybdenum-iron (B-Mo-Fe) system which coated on low carbon steel AISI 1018 substrate at a temperature range of 500 to 800 °C for 24 hours 94 4.20 The morphology images of boride coating (in the B-W-Fe system) on low carbon steel AISI 1018 a) under bright field, b) under differential interface contrast (DIC), and c) the distribution of coating thickness 96 4.21 The XRD pattern (refined with the Rietveld Refinement) of the boride coating in the <strong>boron</strong>-tungsten-iron (B-W-Fe) system 98 4.22 The microdiffraction of B-W-Fe system 100 4.23 The microfluorescence of B-W-Fe system 101 4.24 The plot between the microhardness and the depth from the surface of boride coating in the <strong>boron</strong>-tungsten-iron (B-W-Fe) system 102 4.25 The corrosion resistance of boride coating in the <strong>boron</strong>-tungsten-iron (B-W-Fe) system (in 0.5 M H2SO4) ... 103 4.26 The high temperature oxidation resistance of boride coating in the <strong>boron</strong>tungsten-iron (B-W-Fe) system which coated on low carbon steel AISI 1018 substrate at a temperature range of 500 to 800 °C for 24 hours 104 4.27 The morphology images of boride coating (in the B-Nb-Fe system) on low carbon steel AISI 1018 a) under bright field, b) under differential interface contrast (DIC), and c) the distribution of coating thickness 106 4.28 The XRD pattern (refined with the Rietveld Refinement) of the boride coating in the <strong>boron</strong>-niobium-iron (B-Nb-Fe) system 108 xviii
LIST OF FIGURES (Continued) Figure Page 4.29 The microdiffraction of B-Nb-Fe system 110 4.30 The microfluorescence of B-Nb-Fe system 110 4.31 The plot between the microhardness and the depth from the surface of boride coating in the <strong>boron</strong>-niobium-iron (B-Nb-Fe) system 111 4.32 The corrosion resistance of boride coating in the <strong>boron</strong>-niobium-iron (B-Nb-Fe) system (in 0.5 M H2SO4) 112 4.33 The high temperature oxidation resistance of boride coating in the <strong>boron</strong>niobium-iron (B-Nb-Fe) system which coated on low carbon steel AISI 1018 substrate at a temperature range of 500 to 800 °C for 24 hours 113 4.34 The morphology images of boride coating (in the B-Ta-Fe system) on low carbon steel AISI 1018 a) under bright field, b) under differential interface contrast (DIC), and c) the distribution of coating thickness 115 4.35 The XRD pattern (refined with the Rietveld Refinement) of the boride coating in the <strong>boron</strong>-tantalum-iron (B-Ta-Fe) system 117 4.36 The microdiffraction of B-Ta-Fe system 119 4.37 The microfluorescence of B-Ta-Fe system 119 4.38 The plot between the microhardness and the depth from the surface of boride coating in the <strong>boron</strong>-tantalum-iron (B-Ta-Fe) system 120 4.39 The corrosion resistance of boride coating in the <strong>boron</strong>-tantalum-iron (B-Ta-Fe) system (in 0.5 M H2SO4) ... 121 4.40 The high temperature oxidation resistance of boride coating in the <strong>boron</strong>tantalum-iron (B-Ta-Fe) system which coated on low carbon steel AISI 1018 substrate at a temperature range of 500 to 800 °C for 24 hours 122 4.41 The morphology images of boride coating (in the B-Ti-Fe system) on low carbon steel AISI 1018 a) under bright field, b) under differential interface contrast (DIC), and c) the distribution of coating thickness 124 xix
Page 1 and 2: Copyright Warning & Restrictions Th
Page 3 and 4: ABSTRACT MULTI-COMPONENT BORON COAT
Page 5 and 6: MULTI-COMPONENT BORON COATINGS ON L
Page 7 and 8: APPROVAL PAGE MULTI-COMPONENT BORON
Page 9 and 10: Roumiana S. Petrova, Naruemon Suwat
Page 11 and 12: vii
Page 13 and 14: TABLE OF CONTENTS Chapter Page 1 IN
Page 15 and 16: TABLE OF CONTENTS (Continued) Chapt
Page 17 and 18: TABLE OF CONTENTS (Continued) Chapt
Page 19 and 20: LIST OF TABLES Table Page 2.1 The M
Page 21: LIST OF FIGURES (Continued) Figure
Page 25 and 26: LIST OF FIGURES (Continued) Figure
Page 27 and 28: CHAPTER 1 INTRODUCTION 1.1 Objectiv
Page 29 and 30: 3 borosiliconizing using bo
Page 31 and 32: 5 During boronizin
Page 33 and 34: 7 the FeB/Fe2B interface. Such crac
Page 35 and 36: 9 nickel metal do not show the stro
Page 37 and 38: 11 2.3.2 Paste Boronizing The paste
Page 39 and 40: 13 2.3.5 Plasma Boronizing The plas
Page 41 and 42: 15 Table 2.2 The Multi</str
Page 43 and 44: 17 Proportion of alloying elements,
Page 45 and 46: 19 when boronizing
Page 47 and 48: 21 in the process of powder pack <s
Page 49 and 50: 23 Torun [46] studied the b
Page 51 and 52: 25 10 3 Figure 2.4 The effect of st
Page 53 and 54: 27 • The surface hardness of <str
Page 55 and 56: 29 Figure 2.7 The hardness value fo
Page 57 and 58: 31 2.7 Research and Development on
Page 59 and 60: 33 Instead of toxic borane and <str
Page 61 and 62: 35 Tsipas et al. [76] utilized the
Page 63 and 64: 37 Buijnsters et al. [85] investiga
Page 65 and 66: 39 in terms of thickness and microh
Page 67 and 68: 41 these boride layers reduced the
Page 69 and 70: 43 The decorative boride co
Page 71 and 72: CHAPTER 3 MULTI-COMPONENT BORONIZIN
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47 3.2.2 Procedures of Boronizing H
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49 Specimen Sample Preparation proc
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51 View direction through a microsc
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53 thicknesses was shown as a histo
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55 the test force, gf the length of
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57 3.3.4 Corrosion Resistance Testi
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59 2. Quantitative Phase Analysis Q
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61 B. The variance of the crystalli
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63 SDI Application software was use
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65 The Intensity /k can be refined
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67 The profile value: The weighted
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69 In Figure 4.1 b), the coating im
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71 4.1.2 Phase Identification The X
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73 Table 4.1 The Lattice Parameters
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75 4.1.4 Corrosion Resistance The c
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77 4.2 Boron- Chromium - Iron (B -
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83 4.2.4 Mierohardness In B-Cr-Fe s
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85 4.2.6 Oxidation Resistance The h
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Figure 4.13 The morphology images o
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Figure 4.14 The XRD pattern (refine
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91 Figure 4.15 The microdiffraction
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93 4.3.5 Corrosion Resistance The c
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95 4.4 Boron — Tungsten - Iron (B
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Figure 4.23 The mierofluoreseence o
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103 4.4.5 Corrosion Resistance The
Page 131 and 132:
105 4.5 Boron — Niobium - Iron (B
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107 4.5.2 Phase Identification The
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109 Table 4.5 The Lattice Parameter
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M 11 4.5.4 Microhardness In B-Nb-Fe
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113 4.5.6 Oxidation Resistance The
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Figure 4.34 The morphology images o
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Figure 4.35 The XRD pattern (refine
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1119 Figure 4.36 The microdiffracti
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123 4.7 Boron — Titanium - Iron (
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131 4.8 Boron — Zirconium - Iron
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139 4.9 Boron — Hafnium - Iron (B
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g 145 4.9.5 Oxidation Resistance Th
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147 5.1.1 Microstructure of B-Cr-Fe
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149 As mention above, the coating t
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151 Atomic size: 1.241A Crystal str
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153 Coating thickne, (Mean): 84.24
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155 Due to the atomic size, substit
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157 5.3 Microhardness In bo
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159 5.4 Corrosion Resistance In thi
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161 5.5 Oxidation Resistance In one
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Figure 5.7 The comparison of oxidat
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165 For transition metals Group IVB
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APPENDIX A PHASE DIAGRAMS The binar
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Figure A.3 Phase diagrams in B-Mo-F
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Figure A.5 Phase diagrams in B-Nb-F
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Figure A.7 Phase diagrams in B-Ti-F
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Figure A.9 Phase diagrams in B-Hf-F
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177 Name and formula Reference code
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Name and formula Reference code: 04
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195 15. Selçuka, B., Tpekb, R., Ka
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197 41. Ueda, N., Mizukoshi, T., De
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199 67. Davis, J. A., Wilbur, P. J.
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201 90. Uzunov, N., Ivanov, R. (200
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203 114. Jayaraman, S., Gerbi, J. E
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Multi-component boron coatings on low carbon steel AISI 1018

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