use of metal templates for microcavity formation in alumina

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Figure 4.38 shows EDS analysis of the sample CR30F. According to EDS results of the sample, the concentration content of Al and Cu changes and copper is diffused into alumina approximately 50µm at 1350 o C. Wt (%) 70 60 50 40 30 20 10 0 Al (wt%) Cu (wt%) 0 50 100 150 200 250 Distance (µm) Figure 4.38. EDS line analysis of the sample CR30F. 56
4.3.7. Results of Sintering of Alumina-Ti plate-Alumina Pellets after sintering. Figure 4.39 illustrates the picture of the alumina samples (sandwich structure) (a) (b) (c) (d) Figure 4.39. Picture of the alumina sample (sandwich structure) (a) and (b) after sintering (c) fracture surface of sample CR3000SG- Plt (d) cross sectional surface of sample CR30F-Plt The SEM micrographs of the alumina sample that contains Ti plate, are given in Figure 4.40. During four hour soaking time, titanium advanced through alumina roughly 130µm at 1350 o C. As in the samples, which contains Ti wire, Al2TiO5 occurred in the diffusion region, and the alumina samples had porosity. In Figure 4.40 (a), Kirkendall plane and porosity are seen and as a whole they look like craters. 57
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USE OF METAL TEMPLATES FOR MICROCAV
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ACKNOWLEDGEMENTS I would like to ex
Page 5 and 6:
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
Page 17 and 18: 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: Wt (%) 70 60 50 40 30 20 10 0 Al (w
Page 71 and 72: Wt (%) 40 35 30 25 20 15 10 5 0 Al
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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