Indentors for Measuring the Hardness of Materials at High Temperatures
The possibility of using hot-compacted specimens of boron carbide and titanium diboride as materials for the indentors for measuring the hardness of tungsten carbide at high temperatures has been explored. It is shown that a titanium diboride indent or flattens at 1770°K owing to a fall in the hardness of the material at this temperature. A boron carbide indentor can be used repeatedly for measuring the hardness of tungsten carbide at temperatures up to 2170°K without any trace of chemical reaction between the material of the specimen and that of the indentor and also without failure of the latter.
KeywordsCast Iron Tungsten Carbide Titanium Carbide Boron Carbide Refractory Material
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