Thread: gluing alumina

Alumina? Alumina is the precursor product to aluminium. It is most commonly created from raw bauxite.

I presume you mean aluminium? If so, epoxy works well enough but not knowing the application, I can't really say if it is a good idea.

Alumina and zirconia are two of the most commonly used ceramic materials. I only know this because they make fibre optic connector ferrules out of these ceramics. Also, some electronic circuitry is printed onto flat alumina ceramic substrates - used for its very low thermal expansion coefficient.

What are you trying to glue it to? If you are trying to glue two pieces together, then there are special high temp, non conductive adhesives available. Used in spark plug insulator and oxygen sensor construction etc.

Thanks
For your replies.
Mark you are right I did mean aluminum.
The issue I have is a daylite KW truck door with broken welds between the outer skin and frame both are aluminum.
I tried a experiment, painted on some botecote and once that had started to "leather" I tooled in a fillet of epoxy E to each side of a "T"joint.
24 hrs later, pulled it apart, failed on horizontal surface but seemed pretty strong on the verticals surface. Going to try again without the botecote.My thinking was the lower viscosity botecote would give the best surface contact on the rough sanded ally and epoxy E will stay in a vertical fillet because of its gell form.

sikaflex works well

Not sure what you are trying to do but if you are repairing/joining aluminium this stuff is brilliant.

https://www.youtube.com/watch?v=jijW310xvp4
Uses a normal propane torch to braze aluminium.

One place you can get it in Aus is here. Welding - Robson's Tool King Store

NCArcher that youtube looks like a product I used some time ago. Unfortunately that demo makes it look a lot easier then it really is. The reason I was looking for a epoxy solution, I wanted to preserve the paint work on the door skin.
However I was too slow and the door has now gone to a repair business for a welding and a full door paint job.
thanks all,
Peter

I go with shedbound. Go to an auto paint supplier & inquire. Sika make a product for just that purpose. pker

Bit late seeing the panel has gone, but for future reference, look at this product - used in panel shops.

Automotive Aftermarkets Filler, Adhesives, Coatings & Sealants: 3M™ Automix™ Panel Bonding Adhesive