When asked if ceramic anti-spatter is compatible with aluminum with regards to porosity:

Hello Len!
Thanks for your message. 
Yes, correct - hydrogen is the only gas soluble in aluminum and this is the reason for porosity because it gets trapped during solidification.
Hydrogen is in water and oils which means that anti-spatter containing such are not good for aluminum welding. This is something that average welding engineers know and obey.
Until now we didn't have any reports of porosity related to ceramic anti-spatter.
The key is to spray just a thin layer. 
As a conclusion:
We are mainly in the aluminum business and I strongly believe that the ceramic spray is safe if applied correctly.
Best regards

Robert Lahnsteiner
MIG WELD GmbH International

www.allchemllc.com
leonard.allison@allchemllc.com
216-302-8217

Start producing better welds and cuts and saving a ton of money by contacting us for BorNiGuard ceramic anti-spatter today. 

BorNiGuard extends punch life and reduces downtime while improving the quality of your product.

Welding schools across America have adopted BorNiGuard to teach students cost-saving and quality-improving benefits of ceramic anti-spatter.  Ohio Technical College director of welding reports "Students at OTC have increased tip/nozzle life over 40% even in abusive beginner welding". 

Welding Supply Stores (WSS) admittedly make money on two things; gas and brass. Many are excited at the prospect to deliver value to a strategic customer and so introduce BorNiGuard ceramic anti-spatter. However, once they realize significantly reduced sales of tips, nozzles, diffusers, etc they stop promoting it. Of course, they will transact an order for BorNiGuard when asked for it, but not actively promote it.

You might be lucky to have that WSS rep who sees the bigger picture and wants to earn your next gas contract. When your rep promotes BorNiGuard you know he /she is looking out for your bottom line.

One such user reports: ​"We at MMS in manufacturing welded assemblies have reduced downtime by 20%, extended life of tip/nozzle to 4 to 6 hours and reduced consumable purchases by 25% using BorNiGuard  anti spatter spray.
‘Great product that is now used across the plant in welding applications..”  Kevin M—Gen Mgr
 

​http://weldingproductivity.com/issue/october-2018/