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Abstract
X-ray-diffraction measurements have shown that ball-milling of tungsten carbide powder gives rise to considerable line broadening. Analysis of this broadening by integral-breadth and Fourier methods indicates that the main cause of the broadening is lattice microstrains. X-ray studies have been made on tungsten carbide powders, sintered blocks, and tool tips with cobalt binding, to determine how this strain varies at different stages of treatment of the material. It was found that, after sintering, the tungsten carbide was strain-free, but diamond polishing and mechanical work induced strain in the surface layers.
Notes
* Manuscript received 14 November 1967; in revised form 12 February 1968.