Examining with the Sintered Temperature of Mean Grain Size of B_4C-Al-Ni Composites by Ultrasonic Techniques

• Authors: V. Özkan , İ. Sarpün
• Languages of publication: EN

Abstracts

EN

Hard, tough, lightweight boron-carbide-reactive metal composites, boron-carbide-aluminum composites, are produced. The ultrasonic velocity and attenuation were measured on B_4C-Al-Ni ceramic-metal composites, which are sintered in the temperature range 500-1200°C, by using the pulse echo method. Ultrasonic velocity, ultrasonic attenuation and rate of screen heights of successive peaks were determined according to the pulse-echo method by using 2 MHz and 4 MHz probes. It was observed that the mean grain size of samples has been changed with the sintering temperature. The velocity was found to be pretty sample dependent at room temperature and increased with increasing sintering temperature. The ultrasonic attenuation at room temperature was found to be more sample dependent. The sintering temperature variation of ultrasonic attenuation exhibited broad minimum values around 1200C and sharp maximum values at 500°C. The increase observed in the temperature variation of longitudinal velocities and attenuation has been qualitatively explained with the help of the temperature variation of decrease value.

Keywords

EN

43.35.Ae; 81.70.-q; 43.35.Zc

Discipline

• 81.70.-q: Methods of materials testing and analysis(see also 82.80.-d Chemical analysis and related physical methods of analysis)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 1
• Pages: 184-186

Dates

published

2012-01

Contributors

author

V. Özkan

• Muş Alparslan University, Science Faculty Physics Dept., 49100, Muş, Turkey

author

İ. Sarpün

• Afyon Kocatepe University, Science Faculty Physics Dept., 03200, Afyonkarahisar, Turkey

References

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• 8. J. Szilard, Ultrasonic Testing: Non-Conventional Testing Techniques, Wiley, Chichester 1982, p. 217 %

Identifiers

DOI

10.12693/APhysPolA.121.184