Journal of Research of the National Bureau of Standards
Abstract
The temperature dependence of both Young's and shear modulus of four types of cermet specimens, known as nickel-bonded titanium carbide, as well as Ni and TiC have been determined by a dynamic resonance method. The Young's modulus temperature curves of the cermets are characterized by a linear decrease from room temperature until about 700 to 1,000�C. In this upper temperature region, an inflection in the relation develops, accompanied by an increase in internal friction. Both these effects are attributed to viscous grain boundary slip. For shear modulus, only the linear portion of the modulus temperature relation was obtained. In this linear region, the relative decrease in shear modulus for the cermet specimens is greater than the relative decrease in Young's modulus for the same type of specimen. This means that Poisson's ratio rises with temperature for the cermets.
Addeddate
2012-06-19 12:48:58
Cite
J. Res. Nat. Bur. Stand., Sec. C: Eng. Instr., Vol. 65C, No. 2, p. 89
Identifier
jresv65Cn2p89
Identifier-ark
ark:/13960/t5db9641h
Issue
2
Ocr
ABBYY FineReader 8.0
Page
89
Ppi
600
Rights
The Journal of Research of the National Institute of Standards and Technology is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. However, please pay special attention to the individual works to make sure there are no copyright restrictions indicated. Individual works may require securing other permissions from the original copyright holder.
