use of metal templates for microcavity formation in alumina

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(a) Al2O3 (b) TiO2 (c) (d) Al2O3 TiO2 Al2TiO5 Figure 4.40. SEM micrographs of alumina that used Ti plate (a), (b) alumina CR30F-Plt (c), (d) alumina CT3000SG-Plt. Figure 4.41 shows the EDS analysis of containing Ti plate alumina sample. In the EDS analysis, it is cleared that during sintering the concentration profile of Ti decreases while Al increases with temperature. TiO2 TiO2 Al2TiO5 Al2TiO5 58
Wt (%) 40 35 30 25 20 15 10 5 0 Al (wt%) Ti (wt%) 0 50 100 150 200 250 300 Figure 4.41. EDS line analysis of the sample (CR30F-Plt). 4.4. General Interpretation and Discussion The Table 4.3 illustrates that metal templates advance how many micrometers diffuse in different alumina powders at 1350 o C. According to this, titanium template progress through alumina with diffusing much faster than other metal templates. It is considered that this condition, because of that titanium template, is smooth and direct, in contrast to other templates. On the other hand, it is hard to say that titanium or stainless steel wires which are much faster to diffuse through alumina but copper wire diffuses into alumina lesser than the others. Distance (µm) 59
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USE OF METAL TEMPLATES FOR MICROCAV
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ACKNOWLEDGEMENTS I would like to ex
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ÖZET ALÜMİNA İÇİNDE MİKROBO
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4.3.1. Alumina ....................
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Figure 3.4. Pressed samples: (a) be
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Figure 4.35. Phase equilibrium diag
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CHAPTER 1 INTRODUCTION Porous oxide
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2.1. Porous Materials CHAPTER 2 LIT
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Alumina ceramic is one of the most
Page 19 and 20: 2.3. Properties and Applications of
Page 21 and 22: Selection of stainless steels based
Page 23 and 24: Some physical properties of copper
Page 25 and 26: of some of the oxygen from the air
Page 27 and 28: not occupied by the flow of Cu from
Page 29 and 30: During the 4 hours soaking time at
Page 31 and 32: y the technique of dilatometry (Rah
Page 33 and 34: CHAPTER 3 EXPERIMENTAL In this chap
Page 35 and 36: Table 3.1. Properties of alumina po
Page 37 and 38: 3.2.1. Co-Pressing with Single-acti
Page 39 and 40: 3.3. Density Measurements The final
Page 41 and 42: Figures 4.3 and 4.4 show relative d
Page 43 and 44: Densification Rate (1/ o C) 0,005 0
Page 45 and 46: Densification Rate (1/ o C) 0,009 0
Page 47 and 48: (a) (b) (c) (d) (e) Figure 4.8. SEM
Page 49 and 50: Figure 4.10. EDS analysis of the Ti
Page 51 and 52: 4.3.3. Ti Diffusion into Alumina In
Page 53 and 54: Titanium advanced through alumina a
Page 55 and 56: Wt (%) Wt (%) 100 80 60 40 20 0 100
Page 57 and 58: Figure 4.22. EDS line analysis of t
Page 59 and 60: Densification Rate (1/ o C) 0,0069
Page 61 and 62: Figure 4.27, 28 and 29 belong to ED
Page 63 and 64: 4.3.5. Stainless Steel Diffusion in
Page 65 and 66: Wt (%) 50 45 40 35 30 25 20 15 10 5
Page 67 and 68: Wt (%) 70 60 50 40 30 20 10 0 Al (w
Page 69: 4.3.7. Results of Sintering of Alum
Page 73 and 74: CHAPTER 5 CONCLUSIONS Densification
Page 75 and 76: REFERENCES Alcoa, Inc., 2010, Alumi
Page 77 and 78: Isobe, T., Tomital, T., Kameshima,
Page 79: Yalamaç, E., 2010, Sintering, Co-S
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use of metal templates for microcavity formation in alumina

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