Impact resistance of boron nitride & other ceramics?
Impact resistance of boron nitride & other ceramics?
(OP)
I'm looking for some information on the impact resistance of boron nitride and other ceramics.
I've been looking for data like this online and the data has been at best incomplete. Or comparing different impact values.
Can anybody point me to some good data? Or provide a rough outline of how boron nitride compares to other ceramics?
I've been looking for data like this online and the data has been at best incomplete. Or comparing different impact values.
Can anybody point me to some good data? Or provide a rough outline of how boron nitride compares to other ceramics?





RE: Impact resistance of boron nitride & other ceramics?
If you just want a comparison for a broad range of ceramics you will probably have to get a materials book.
You might look around NIST for data on additional materials
h
RE: Impact resistance of boron nitride & other ceramics?
Impact resistance is hugely dependent on how the materials are used.
tom
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
Good engineering starts with a Grainger Catalog.
RE: Impact resistance of boron nitride & other ceramics?
TRS is a real property, impact toughness has to do with application.
Interesting, I used to look at thermal shock data. this has a lot to do with toughness, but not as dependent on how the part is tested.
all of the ceramics are quire brittle compared to metals. This makes test methods very delicate.
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Plymouth Tube
RE: Impact resistance of boron nitride & other ceramics?
I was not aware of the NIST data. It is part of what I was looking for, but it's not complete, or terribly well structured for my goals.
It would be particularly nice if there was a somewhat subjective summary-comparison of impact resistance somewhere.
RE: Impact resistance of boron nitride & other ceramics?
However, the material designation alone, is not nearly enough information. We spend years developing cermet tipped saw blades for mills, plats, etc. One grade of material can be greatly different than another. I had a $15,000 test ruined because the manufacturer had switched his processing methods.
I would try CoorsTek or see if I could find a university paper. The University of Washington in Seattle does a lot of ceramics research and I have always found their library to be very helpful.
If this is for an industrial application you need to have someone on the materials side who will produce consistent material.
Tom
Thomas J. Walz
Carbide Processors, Inc.
www.carbideprocessors.com
Good engineering starts with a Grainger Catalog.
RE: Impact resistance of boron nitride & other ceramics?
On the soft type, there are many grades of hBN available commercially. Since thermal shock is a function of its strength, co-efficient of thermal expansion and thermal conductivity as well - you will have to be careful to use this as a guide for impact strength.
Some properties are listed in this website on hBN. You can call them if they have more info that is not published in their website:
ht
Their phone number is: (440) 878 5728.
Hope this helps.
RE: Impact resistance of boron nitride & other ceramics?
ht
I hope this is helpful.