20th to 23rd October 2009

 

Macor® Machinable Glass Ceramic Machinable with ordinary metalworking tools & combining the performance of a technical ceramic with the versatility of a high performance plastic.

Precision Ceramics is a Macor Distributor. Precision Ceramics is a Macor Expert. In fact, there is no other Macor Supplier who knows more about this unique machinable glass ceramic than Precision Ceramics. We're also experts in Macor Metallisation and publishers of the Macor Technical Bulletin.

The chemical durability of fluorphlogopite (magnesia mica) glass (code 9658) was studied through the pH range from 0.1 to 13. The effects of time, temperature and pH were examined.

This study showed that Macor® machinable glass ceramic code 9658 glass ceramic has poor acid and alkali resistance relative to other Corning glass ceramics as demonstrated in the following comparison:

Poor acid and alkali durability are attributed to the poorly resistant borosilicate glassy phase. The glass was found to be ten times more acid leachable than the mica crystals. Throughout the entire pH range, the crystalline phase appeared to be stable against attack, while B2O3 was so readily leached from the glassy phase that the entire structure was more vulnerable to attack.

Test results are outlined below.

* -H2O not freshened daily **-H2O freshened daily

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