<'))))>< Fish
Cave Dweller
Gone Fishing
Member since April 2005
Posts: 1,841
|
Post by <'))))>< Fish on May 2, 2005 13:05:40 GMT -5
|
|
|
Post by connrock on May 2, 2005 13:52:07 GMT -5
Hi Dan, Good question. I looked up the difference in hardness between aluminum oxide and silicone oxide and it seems that silicone carbide as harder.It's rated at between 9-10 on Moh's scale of hardness where the aluminum oxide is a 9. I just posted another "type" of Moh's Scale.It's called: Mohs' Hardness of Abrasives It can be found at this link : andy321.proboards16.com/index.cgi?board=tips&action=display&thread=1115059486Something I might add is that the difference between a 9 and a 10 on the Moh's scale is that a 10 is 10 times harder then a 9. Tom
|
|
rollingstone
starting to spend too much on rocks
Member since July 2009
Posts: 236
|
Post by rollingstone on May 2, 2005 16:33:11 GMT -5
As I understand it, aluminum oxide (corundum) tends to get worn smooth (which is why you can tumble rubies and sapphires, even if they take a long, long time). Round particles don't cut very well. Silicon carbide tends to fracture into sharp shards as it breaks down, so cuts better (until the shards get too fine).
|
|