"Nitride coated valves"
"Nitride coated valves"
(OP)
I've heard some talk of people getting "nitride coated valves" in their hi-perf engines, and I was wondering a few things.
* What's the coating made of? Silicon Nitride? Titanium Nitride?
* How is it applied?
* What are the intended benefits? Reduced wear? Reduced friction?
* Where is the coating applied on the valves?
Thanks in advance.
Isaac
* What's the coating made of? Silicon Nitride? Titanium Nitride?
* How is it applied?
* What are the intended benefits? Reduced wear? Reduced friction?
* Where is the coating applied on the valves?
Thanks in advance.
Isaac





RE: "Nitride coated valves"
RE: "Nitride coated valves"
RE: "Nitride coated valves"
It would also increase wear resistance at the valve stem.
RE: "Nitride coated valves"
I think the others have sufficiently identified this coating, although there exist at least 3 different "nitride" coatings that I'm aware of for drill bits and other tools.
Thanks to everyone for the info.
RE: "Nitride coated valves"
Nitriding works fine for resistance as it hardens the valve. The seats get pounded by a harder valve so there is a possibility that seat wear is increased . Watch that closely.
For durability there is another solution and that is a heat resistant ceramic coating on the face only, the part that is exposed to the combustion.This keeps the valve much cooler and is great for the exhaust valve which operates at higher temp.
Check the coatings industry . Search "Jet-Hot Coatings "which uses a plasma arc deposition technique among others.
RE: "Nitride coated valves"
RE: "Nitride coated valves"
Sean
RE: "Nitride coated valves"
Regards
pat