747heavy wrote:why would you need to coat titanium?
its light and fiarly heat resistant but when it cools it does not cool uniformly and deforms.
Evidence of this can be found by interviewing a maintenance mech on the LockHeed SR-71 blackbird.
After every mission they have to panelbeat the nosecone (titanium) and wings bac into shape. Titanium is quite soft yet tough and anythng less than perfect heat distribution results in a rather bent looking cooled component.
We saw this in recovered rocket motor nozzles as well. They look pretty banged up after long burn. we thought it was damage due to the recovery. Nope they just got bent out of shape due to uneven cooling.
The Zircotec I assume distributes heat more evenly across the titanium surface.
Reinforced Carbon carbbon wouldbe a better material but it takes a few weeks just to mould the part..
titanium is easier to work with if you need to make a part quickly since it can be formed over an external shape or even an anvil