Fast diffusion of Silver in single and Polycrystals of α-Alumina

Badrour, L.; Moya, E.; Bernardini, J.; Moya, F.

doi:10.1016/0022-3697(89)90447-2

Cited by 30 publications

(18 citation statements)

References 53 publications

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“…T = 827°C, t = 8.682 × 10 5 s. As 0 constant surface concentration and As e extrapolation back to y = 0 of the tail part of the curve. Badrour et al (1989). With kind permission of Elsevier Fig.…”

Section: Silver Diffusion In Aluminamentioning

confidence: 96%

“…Badrour et al (1989). With kind permission of Elsevier Table 11.10 Bulk and dislocation diffusion parameters determined on monocrystalline (M) and polycrystalline (P) samples Badrour et al (1989). With kind permission of Elsevier † Experiment performed under vacuum (pO 2 = 10 −2 torr) It is quite clear from Fig.…”

Section: Silver Diffusion In Aluminamentioning

confidence: 97%

“…11.32 Residual activity (Ar) and slice activity (As) profiles for diffusion of silver in polycrystalline alumina. T = 827°C, t = 8.682 × 10 5 s. Badrour et al (1989). With kind permission of Elsevier Fig.…”

Section: Silver Diffusion In Polycrystaline Aluminamentioning

confidence: 98%

“…log As = f(y) obtained at 916°C for diffusion of silver in monocrystalline alumina. Badrour et al (1989). With kind permission of Elsevier Table 11.10 Bulk and dislocation diffusion parameters determined on monocrystalline (M) and polycrystalline (P) samples Badrour et al (1989).…”

Section: Silver Diffusion In Aluminamentioning

confidence: 99%

“…11.21 Residual activity (Ar) and slice activity (As) profiles for diffusion of silver in monocrystalline alumina. T = 827°C, t = 8.682 × 10 5 s. Badrour et al (1989). With kind permission of Elsevier Table 11.9 Different equations used to analyze the activity profiles within the range of bulk diffusion Badrour et al (1989).…”

Section: Silver Diffusion In Aluminamentioning

confidence: 99%

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Diffusion in Alumina Single Crystals

Pelleg

2015

Diffusion in Ceramics

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Alumina one of the oxide ceramics is the most cost effective and widely used material. With an excellent combination of properties and attractive price alumina has a wide range of application. It is available in purity ranges of 94-99.8 % and usable for critical high temperature application. Alumina exhibits strong ionic interatomic bonding giving rise for its excellent properties such as high hardness, high melting point and its wear resistance. The chemical inertness is of particular interest at high temperature. The measuring and understanding of self-diffusion and other diffusion phenomena, which control many properties, such as sintering, grain growth, creep and most solid-state reactions, have been matters of interest for the successful operation of alumina. The composition of the ceramic body can be changed to enhance particular desirable material characteristics thus for example improving hardness (strength properties) and change color, which is achieved by adding various solutes. Therefore a knowledge of solute diffusion is also essential to understand and maintain the desired property on exposure to high temperature. Since diffusion controlled reactions in grain boundaries and dislocations are faster than in bulk, measuring and understanding the diffusion properties in these locations is of great interest. Its excellent dielectric properties, makes alumina an exceptionally good high temperature electrical insulator. Diffusion data (self, solute, grain boundary and dislocation) are compiled at the end of the chapter.

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Section: Silver Diffusion In Aluminamentioning

confidence: 96%

Section: Silver Diffusion In Aluminamentioning

confidence: 97%

Section: Silver Diffusion In Polycrystaline Aluminamentioning

confidence: 98%

Section: Silver Diffusion In Aluminamentioning

confidence: 99%

Section: Silver Diffusion In Aluminamentioning

confidence: 99%

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