Method for detecting a defect in a glass-ceramic for magnetic di

Details Method for detecting a defect in a glass-ceramic for magnetic di Method for detecting a defect in a glass-ceramic for magnetic di

1994-08-25

1996-12-03

Czaja, Donald E.

Glass manufacturing

Processes

With measuring, sensing, inspecting, indicating, or testing

65 331, 65 338, 501 4, 356237, C03B 526

Patent

active

055803636

ABSTRACT:
A method for detecting a defect in a glass-ceramic for magnetic disks includes steps of forming a colored glass-ceramic having Munsell value within the range of 0 to 7 in the CIE color system by subjecting to heat treatment a base glass comprising in weight percent:

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Physical Properties Committee, "The Assessment of heterogeneity in glass," Glass Technology, vol. 2, No. 5, pp. 192-197, Oct. 1961.

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