Low-Frequency Acoustic Control of Physicomechanical Properties of Refractory Components

Moskovenko, I. B.

doi:10.1023/b:refr.0000046515.42672.55

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Cited by 4 publications

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“…At present, acoustic methods based on the measurement of eigenmode frequencies (EMF) of refractory components or low-frequency ultrasonic velocities have been gaining ever-increasing acceptance in the NDT inspection of refractory materials [2,3]. These methods have been used for testing abrasive materials both by domestic and foreign manufacturers [4].…”

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Nondestructive evaluation of physicomechanical properties and technology monitoring in the production of refractory components

Moskovenko¹

2005

Refract Ind Ceram

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confidence: 99%

Nondestructive evaluation of physicomechanical properties and technology monitoring in the production of refractory components

Moskovenko¹

2005

Refract Ind Ceram

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Sound Velocity of Kaolin in the Temperature Range from 20 °C to 1100 °C

2009

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The sound velocity of Sedlec kaolin during heating from 20 • C to 1100 • C was investigated by modulated force thermomechanical analysis (mf-TMA). In the interval from 20 • C to 250 • C, the sound velocity increases which can be explained by liberation of the water molecules from pores and micropores. Dehydroxylation (450 • C to 650 • C) presents itself with a decrease of the sound velocity. After dehydroxylation, a two-step increase of the sound velocity was observed. The first step of the increase of the sound velocity is due to solid-state sintering at low temperatures. The second step starts at 950 • C as a consequence of the collapse of the metakaolinite structure. After the maximum, a steep increase of the sound velocity follows as a result of solid-state sintering.

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