Reaction Bonded AlN (RBAN) Advanced Non Oxide Ceramics

von Salahi, Esmail
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Salahi, Esmail Reaction Bonded AlN (RBAN) Advanced Non Oxide Ceramics
Salahi, Esmail - Reaction Bonded AlN (RBAN) Advanced Non Oxide Ceramics

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Beschreibung

The nitridation of RBAN samples proceed by both solid-gas and liquid-gas reactions depend on the morphology and average particle size of Al starting powder. The reaction rate was found been increased by decreasing average particle size of the Al and by choosing the flake-like morphology. The temperature at which nitriding reaction occurs depends on the Al average particle size and morphology. The compared respective results show a major influence of the AlN/Al ratio. It seemed that the optimum AlN/Al weight ratio should be 75/25 wt%. Due to the smaller particle size and morphology of the flake -like morphology of Al starting powder as compared to equi-axed one, however the nucleation period in flake-like morphology Al maybe shorter. The change in the microstructural parameters resulting from the Al powder particle size distribution and morphology also affects the mechanical properties of RBAN samples. Fracture strength increases with decreasing porosity, pore size and by using the flake-like morphology. In order to make high strength materials it is desirable to have a homogeneous microstructure with a narrow pore size distribution and small pores.

Mitwirkende

Autor:
Salahi, Esmail
Heinrich, Jurgen G.

Weitere Informationen

Biografie:
Dr.Eng. Esmail Salahi was born in 1963 in Tehran. He studied at the undergraduate and graduate in ceramic materials engineering tend to be finished in 1996 in Iran. He started his Ph.D thesis incorporate with TU-Clausthal(Germany)during 1999-2002. He works as an Associate Prof. in Materials and Energy Research Center(MERC)since 2002.
Sprache:
Englisch
Auflage:
1/2013
Seitenanzahl:
112
Medientyp:
Taschenbuch
Verlag:
LAP Lambert Academic Publishing

Stammdaten

Produkttyp:
Taschenbuch
Verpackungsabmessungen:
0.22 x 0.15 x 0.007 m; 0.155 kg
GTIN:
09783659447686
DUIN:
DRO2OBKRHGB
CHF 51.60
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