Conference paper
Ultrasonic characterization and temperature dependence of elastic properties of ductile ternary ceramics
v 509(1), pp 1501-1507
23 May 2000
Abstract
Measurements of temperature dependence of sound velocity provide valuable information about the elastic properties, microstructure, bond strength and stability of the materials. The materials studied here are a family of structurally related, layered ternary carbides and nitrides of the types Ti3BX2 and Ti4BX3 with B=S, Al, X=C, N. This class of compounds posses an unusual combination of thermal and mechanical properties. With Vicker’s hardness values that range between 3 and 5 GPa, they are relatively soft for carbides and nitrides, and are readily machinable (similar to graphite). The mechanical behavior of these ceramics can be attributed to the relative weakness, particular in shear, of the Ti-Si bonds. The elastic constants and their temperature dependencies have been measured in the temperature range 50–300K using the phase sensitive ultrasonic technique. The room temperature values of the Young’s and shear moduli obtained from the pulse-echo method agree well with the resonant ultrasonic spectroscopy results. The Debye temperatures for all compounds, estimated from the elastic constants, are found to be consistent with values calculated from heat capacity measurements.
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Details
- Title
- Ultrasonic characterization and temperature dependence of elastic properties of ductile ternary ceramics
- Creators
- Peter Finkel - Drexel University, Mechanical Engineering and MechanicsMichel W Barsoum - Drexel University, Materials Science and EngineeringTamer S El-Raghy - Drexel University
- Publication Details
- v 509(1), pp 1501-1507
- Conference
- 26th Annual Review of Progress in Quantitative Nondestructive Evaluation, 26th (Montreal, Canada, 25 Jul 1999–30 Jul 1999)
- Publisher
- American Institute of Physics (AIP)
- Number of pages
- 7
- Resource Type
- Conference paper
- Language
- English
- Academic Unit
- Materials Science and Engineering; Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000089913700193
- Other Identifier
- 991021930811604721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Acoustics
- Engineering, Electrical & Electronic
- Materials Science, Characterization & Testing
- Physics, Applied