In summary, we have successfully fabricated high-performance
porous ceramics 9PHEBs with superior mechanical and thermal
properties via a simple and effective UHTS technique. The combination of a high mechanical strength (≈337 MPa) at a porosity
of ≈50% and a low thermal conductivity (≈0.76 W m−1 K−1) endows our 9PHEB materials with great potential as reliable thermal insulation. The superior mechanical and thermal properties
are believed to result from the multiscale design: i) the ultrafine pores at the microscale, as well as strong connections and
good interfaces between building blocks at the nanoscale, can be
well constructed, owing to the ultrafast heating rate and ultrahigh
temperature of the UHTS technique; ii) the severe fluctuations of
the mass and strain fields induced by the large lattice distortion
at the atomic scale, which simultaneously improves the stiffness
of lattice and decreases the thermal conductivity of the ceramics by acting as phonon scattering barriers. Moreover, the synthesized 9PHEB show exceptional dimension and strength retention up to 2000 °C, making them suitable for use in extreme
conditions.
toiletobserver@lemmy.world
on 29 Jan 2024 15:09
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I understood some of those words.
Aceticon@lemmy.world
on 29 Jan 2024 15:52
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I understood most of the words, especially the ones that get repeated the most like “and”, “of”, “the”, “as” and even “a”.
On a more serious note, concepts like “phonon” are interesting Wikipedia dives.
RubberElectrons@lemmy.world
on 29 Jan 2024 05:38
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Now this is the good hearty science and technology I come around for. Good work!
Aceticon@lemmy.world
on 29 Jan 2024 15:54
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I bet its first use is going to be military…
RememberTheApollo@lemmy.world
on 30 Jan 2024 13:31
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How many civilian uses of hypersonic heat shields are there? I suppose maybe private space companies might be better interested, but I can’t think of any others.
Aceticon@lemmy.world
on 30 Jan 2024 13:50
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It might open the door for civilian ramjet engine usage, but you’re right about the main reason why military use will be first.
threaded - newest
Looks like they have the full text PDF download here.
researchgate.net/…/377104694_Ultrastrong_and_High…
Here’s the conclusion:
I understood some of those words.
I understood most of the words, especially the ones that get repeated the most like “and”, “of”, “the”, “as” and even “a”.
On a more serious note, concepts like “phonon” are interesting Wikipedia dives.
Now this is the good hearty science and technology I come around for. Good work!
I bet its first use is going to be military…
How many civilian uses of hypersonic heat shields are there? I suppose maybe private space companies might be better interested, but I can’t think of any others.
It might open the door for civilian ramjet engine usage, but you’re right about the main reason why military use will be first.
Is it good against firestorm heavy assault missiles? How much power grid does it take?