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oxide bonded vs. nitride bonded silicon carbide shelves?

updated sat 11 nov 06

 

Dustin Harris on fri 10 nov 06


does anyone know the difference between oxide and nitride bonded silicon
carbide shelves? this website says the oxide is a little more dense.

http://www.euclids.com/SiC.htm

also how do you guys feel about the slits that are cut in shelves for
thermal expansion? i know this helps keep the shelves from cracking but
do shelves with slits tend to warp more than shelves without?

thanks in advance
dustin