Morphological development and oxidation mechanisms of aluminum nitride whiskers

Hou, Xinmei; Yue, Changsheng; Singh, Ankit; Zhang, Mei; Chou, Kuo‐Chih

doi:10.1016/j.jssc.2010.02.022

Cited by 10 publications

(2 citation statements)

References 12 publications

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“…These results suggested that when operated at such a high temperature (especially higher than 1100°C) for a longer time, the SiC W would be seriously oxidized. As the oxidation kinetics investigation can help to understand and predict the oxidation behavior of a material, the kinetic models for simulating the nonisothermal and isothermal oxidation of SiC cylinder particles according to the reaction fraction have been proposed by Chou et al ., which described as Eq. (2) and (3) respectively:

\frac{Δ m}{m_{0}} = \frac{Δ {normalm}_{normalmax}}{m_{0}} \cdot [1 - {(1 - \sqrt{\frac{1}{B_{T}} \exp (- \frac{normalE}{R T})} (\sqrt{\frac{T - T_{0}}{italicη}}))}^{2}]

\frac{Δ m}{m_{0}} = \frac{Δ {normalm}_{normalmax}}{m_{0}} \cdot [1 - {(1 - \sqrt{\frac{1}{B_{T}} \exp (- \frac{normalE}{R T}) t})}^{2}] .

…”

Section: Resultsmentioning

confidence: 99%

Oxidation Behavior of SiC Whiskers at 600–1400°C in Air

Kuang

Cao

2014

J. Am. Ceram. Soc.

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The oxidation behavior of SiC whiskers (SiC W ) with a diameter size of 50-200 nm has been investigated at 600°C-1400°C in air. Experimental results reveal that SiC W exhibit a low oxidation rate below 1100°C while a significant larger oxidation rate after that. This can be attributed to the small diameter size of SiC W , which determines that it is hard to form a protective SiO 2 layer thick enough to hamper the diffusion of oxygen effectively. Both nonisothermal and isothermal oxidation kinetics were studied and the apparent oxidation energy was calculated to further understand the oxidation behavior of the SiC W .

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\frac{Δ m}{m_{0}} = \frac{Δ {normalm}_{normalmax}}{m_{0}} \cdot [1 - {(1 - \sqrt{\frac{1}{B_{T}} \exp (- \frac{normalE}{R T})} (\sqrt{\frac{T - T_{0}}{italicη}}))}^{2}]

\frac{Δ m}{m_{0}} = \frac{Δ {normalm}_{normalmax}}{m_{0}} \cdot [1 - {(1 - \sqrt{\frac{1}{B_{T}} \exp (- \frac{normalE}{R T}) t})}^{2}] .

…”

Section: Resultsmentioning

confidence: 99%

Oxidation Behavior of SiC Whiskers at 600–1400°C in Air

Kuang

Cao

2014

J. Am. Ceram. Soc.

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“…Aluminum nitride (AlN) materials have excellent stability at low temperature and high resistance to corrosion [20,21]. More importantly, AlN does not react with O 2 at room temperature while the AlN-O 2 reaction occurs violently at 900 • C [22,23]. In addition, this AlN-O 2 reaction is an exothermic reaction, which is a favorable factor like metal additives in terms of energy contribution.…”

Section: Introductionmentioning

confidence: 99%

Surface Nitridation of Aluminum Nanoparticles by Off-Line Operation and Its Kinetics Analysis

Dai

et al. 2018

Metals

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To improve combustion efficiency and anti-oxidation property of aluminum nanoparticles (ANs), surface nitridation of ANs was performed in a pipe furnace under the protection of nitrogen gas in a glove-operation hermetic box via an off-line nitridation process. The product was characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) analysis. A core-shell nanostructure with an aluminum nitride (AlN) coating on the ANs core was observed. The empirical kinetic triplets (Ea, A, and f(α)) for the nitridation of ANs, for the first time, were calculated and analyzed using five types of iso-conversional methods and a differentiation method. The effects of the kinetics of the reaction were investigated by simultaneous differential scanning calorimetry-thermogravimetry (DSC-TG) and thermal analysis using linear programmed temperature at different heating rates.

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