Internal Combustion Engine question

AI Thread Summary
Mono-crystal alumina could potentially replace aluminum in internal combustion engines due to its higher strength and density, which may enhance engine performance, particularly in methanol or ethanol-based engines. However, the high manufacturing cost of mono-crystal alumina poses a significant challenge. Current ceramics used in engine components typically have a purity of up to 99.8% alumina, with limited research on mono-crystal applications. Historical experiments, such as those by Pratt & Whitney on single crystal turbine blades, suggest potential benefits but also highlight the complexities involved. Further literature search on ceramic materials in engine applications is recommended for deeper insights.
MattMaxwell
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Just out of curiosity, as I am very amateur here, in ICE could mono-crystal Alumina replace aluminum and create a better engine? Aside from the high cost to manufacture.

I know MC-Alumina has a higher density than Al but is considerably stronger. This would be fantastic, I would think for a methanol/ethanol based engine.
 
Engineering news on Phys.org
You will find a lot of interesting information about this subject if you search on :

Ceramic + (any of) Engines / Cylinder blocks / Cylinder heads / Pistons / Cylinder liners / Valves
 
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Correct, however I do not see any information based on mono crystal. The ceramics used are usually at most 99.8% Alumina. I am sure this is due to a few reasons. My sole focus is on purity (9n plus).
 
i think Pratt-Whitney experimented with single crystal aircraft engine turbine blades in 1970's.

Add that name to your literature search ?
 

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