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2013 | 123 | 4 | 688-694
Article title

Mean Grain Size and Pore Effects οn Ultrasonic Properties οf WC-Fe-Ni and SiC-Fe-Ni Composites

Content
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EN
Abstracts
EN
In this work, electroless nickel plating technique was used with WC-Fe and SiC-Fe powders. Plated powders were sintered at temperature ranging from 600C to 1100C under argon shroud in Phoenix microwave furnace. The mean grain size is determined by using three different techniques namely ultrasonic velocity, ultrasonic attenuation, and rate of screen heights of successive peaks according to the pulse-echo method by using a 2 MHz and a 4 MHz probes compared with the scanning electron microscopy images. In addition, the relative effects of porosity on ultrasonic attenuation and velocity in the WC-Fe-Ni and SiC-Fe-Ni composite samples are studied. It is seen that the ultrasonic velocity, the ultrasonic attenuation, the rate of screen heights of successive peaks have a linear relation with the mean grain size of samples. However, the correlation coefficients of porosity graphs have higher values than mean grain size graphs for the composite materials as expected. This indicates that porosity determines the ultrasonic velocity and attenuation for the composite samples.
Keywords
EN
Publisher

Year
Volume
123
Issue
4
Pages
688-694
Physical description
Dates
published
2013-04
received
2012-01-26
(unknown)
2012-02-26
(unknown)
2012-04-05
Contributors
author
  • Afyon Kocatepe University, Physics Dept., Afyonkarahisar, Turkey
author
  • Muş Alparslan University, Physics Dept., Muş, Turkey
author
  • Afyon Kocatepe University, Technical Education Faculty, Afyonkarahisar, Turkey
author
  • Afyon Kocatepe University, Technical Education Faculty, Afyonkarahisar, Turkey
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv123n409kz
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