MACOR machinable glass ceramic gives you the characteristics you need from a ceramic with the added benefit of easy fabrication using ordinary machine tools. No longer is it necessary to staff a ceramic specialist with high temperature kilns or specialized diamond grinding equipment. Fabrication is quick, inexpensive and accurate using your in-house personnel, local machinist or Accuratus.
Manufacture
MACOR is melted and cast using conventional glass making techniques. It is a fluorine rich glass with a composition approaching trisilicic fluorphlogopite mica (KMg3AlSi3O10F2). Upon cooling from the melt, the glass spontaneously phase separates into fluorine rich droplets. The resulting glass has the appearance of an opal glass. Subsequent controlled heat treatment devitrifies the fluorine rich droplets causing a series of morphological changes ultimately resulting in the formation of randomly oriented, interlocked, sheet-like fluorphlogopite mica crystals within the alumino-borosilicate glass matrix. The volume percent crystalline phase after heat treatment is approximately 55% with a mean crystal size of 20 microns. It is this uniform distribution of randomly oriented mica within the parent glass that gives rise to the unique characteristics of MACOR
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