G D Rieck and K Koopmans 1964 Br. J. Appl. Phys. 15 419 doi:10.1088/0508-3443/15/4/311
Investigations of the disturbed layer of ground quartz
G D Rieck and K Koopmans
Show affiliationsIt is shown electron microscopically that in 3 μm diameter wet ground quartz powders less than 1% of the mass consists of sub-microscopical `adhering' particles. The observed decrease in the peak intensities of the X-ray diffraction lines of these 3 μm powders must be attributed to disturbed outer layers of the powder particles. It is shown that the outer layers recover to a considerable extent by a heat treatment at 1200°C and the X-ray and electron diffraction diagrams reveal that the disturbance is rather slight. From the profiles of the X-ray powder lines it can be derived that the thickness of the disturbed layer in these powders is greater than or equal to 0.4 μm.
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Issue 4 (April 1964)
Received 10 October 1963
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Investigations of the disturbed layer of ground quartz
G D Rieck and K Koopmans 1964 Br. J. Appl. Phys. 15 419
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