The superpower of coatings
 

https://www.bbc.com/news/articles/cj9n1939ryzo


Jet engines are one of the most jaw-dropping feats of engineering humans have ever come up with.

But jet engines shouldn’t be possible, says Ben Beake, director of materials research at Micro Materials, an equipment testing company in Wales.

“The air coming in is hotter than the melting point of the metal underneath – which is obviously not a good thing,” he explains, pointing out that this air reaches temperatures well above 1,000C.

Designers of jet engines have got around this problem by applying heat-resistant ceramic coatings to the engine blades. And now, researchers are developing yet stronger coatings that allow the engines to run hotter still.

“If you get it to go hotter, then there’s a massive saving on fuel and CO2,” says Dr Beake. By increasing the temperature by just 30C or so, you might get an 8% fuel saving, he estimates.

Interesting read. Not too technical though. SiO2 (silicon dioxide) nano-particles have revolutionized the paint care industry.