Kinetic studies of oxidation of MgAlON and a comparison of the oxidation behaviour of AlON, MgAlON, O’SiAlON–ZrO2, and BN–ZCM ceramics
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Xidong Wang
Abstract
The kinetics and morphology of the oxidation process of magnesium-aluminium oxynitride (MgAlON), aluminium oxynitride (AlON), O’SiAlON–ZrO2, and BN-ZCM have been studied in the temperature range 1373 – 1773 K. Oxidation experiments with powder and plate samples of the above materials have been carried out in air. MgAlON shows the best resistance to oxidation at lower temperatures (<1473 K), whereas at higher temperatures (~ 773 K), AlON shows the best resistance. O’SiAlON–ZrO2 shows very good oxidation resistance up to 1673 K. But its oxidation rate increases strongly above 1673 K, presumably due to the formation of liquid phase. BN–ZCM has the poorest oxidation resistance due to the evaporation of B2O3. The activation energies for the chemical oxidation reaction of AlON, MgAlON, and O’SiAlON–ZrO2 are 214, 330 and 260 kJ/mol, respectively. The overall diffusion activation energies for AlON, MgAlON, O’SiAlON–ZrO2 and BN–ZCM are 227, 573, 367 and 289 kJ/mol, respectively.
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© 2002 Carl Hanser Verlag, München
Articles in the same Issue
- Frontmatter
- Articles/Aufsätze
- Mechanical properties of Cu/In – 48 Sn/Cu diffusion-soldered joints
- Effect of ultrasonic (cavitation) treatment of the melt on the microstructure evolution during solidification of aluminum alloy ingots
- Computer simulation of the long-range diffusional transformation based on the postulated principle of maximum dissipation rate of Gibbs energy
- Kinetics of growth of intermetallics in the Cu–Sn system
- Atomic composition of the metastable β″ phase precipitate in an Al –Mg–Si alloy
- Interfacial tension of metastable immiscible alloys: a novel measurement concept
- On the kinetics of the initial oxidation of iron and iron nitride
- Synthesis and characterisation of MgAlON
- Kinetic studies of oxidation of MgAlON and a comparison of the oxidation behaviour of AlON, MgAlON, O’SiAlON–ZrO2, and BN–ZCM ceramics
- Study on warm rolling of AISI 1015 carbon steel
- Experimental study on elastic modulus and damping capacity of woodceramics
- Texture development during cold rolling of unidirectionally solidified Al–Al3Ni alloy
- Wear behavior of A356/M7C3 and A356/SiC particulate metal matrix composites
- Microstructural characterization and microhardness of rapidly solidified Al –Ce alloys
- Effect of quenching rate on the microstructure of rapidly solidified Al –Sr alloys
- The protective mechanism of the native rust layer on Cr-containing steels exposed to marine atmosphere
- Notifications/Mitteilungen
- Personen
- DGM conferences
Articles in the same Issue
- Frontmatter
- Articles/Aufsätze
- Mechanical properties of Cu/In – 48 Sn/Cu diffusion-soldered joints
- Effect of ultrasonic (cavitation) treatment of the melt on the microstructure evolution during solidification of aluminum alloy ingots
- Computer simulation of the long-range diffusional transformation based on the postulated principle of maximum dissipation rate of Gibbs energy
- Kinetics of growth of intermetallics in the Cu–Sn system
- Atomic composition of the metastable β″ phase precipitate in an Al –Mg–Si alloy
- Interfacial tension of metastable immiscible alloys: a novel measurement concept
- On the kinetics of the initial oxidation of iron and iron nitride
- Synthesis and characterisation of MgAlON
- Kinetic studies of oxidation of MgAlON and a comparison of the oxidation behaviour of AlON, MgAlON, O’SiAlON–ZrO2, and BN–ZCM ceramics
- Study on warm rolling of AISI 1015 carbon steel
- Experimental study on elastic modulus and damping capacity of woodceramics
- Texture development during cold rolling of unidirectionally solidified Al–Al3Ni alloy
- Wear behavior of A356/M7C3 and A356/SiC particulate metal matrix composites
- Microstructural characterization and microhardness of rapidly solidified Al –Ce alloys
- Effect of quenching rate on the microstructure of rapidly solidified Al –Sr alloys
- The protective mechanism of the native rust layer on Cr-containing steels exposed to marine atmosphere
- Notifications/Mitteilungen
- Personen
- DGM conferences
