asteroza + carbide   41

A comparison of the antifouling performance of air plasma spray (APS) ceramic and high velocity oxygen fuel (HVOF) coatings for use in marine hydraulic applications: Biofouling: Vol 34, No 5
Still kinda expensive to do a whole ship hull, but this basically uses a supersonic flamethrower to treat a metal surface with a carbide layer for biofouling protection, cuts fouling by 50% or more.
marine  materials  science  research  technology  carbide  surface  treatment  antifouling  coating  high  velocity  oxygen  fuel  plasma  spray 
october 2018 by asteroza
Ceramic–metal composites for heat exchangers in concentrated solar power plants | Nature
New hybrid ceramic for use in heat exchangers. Start with a titanium carbide porous block, immerse in a copper and zirconium bath. The zirconium infiltrates the ceramic and displaces titanium in the carbide, while the titanium migrates into the open pores. Copper ends up being a thin film sealant.
supercritical  CO2  heat  exchanger  PCHE  materials  science  research  technology  titanium  carbide  zirconium  copper 
october 2018 by asteroza
Ultrahard carbon film from epitaxial two-layer graphene | Nature Nanotechnology
SiC coated with exactly two layers of aligned graphene can turn into diamene, a temporary state that is harder than bulk diamond, when compressed at room temperature. Sorta like those shear thickening liquid armors.
defense  military  armor  shear  thickening  hardening  diamene  graphene  silicon  carbide  materials  science  research  technology  nanotechnology 
december 2017 by asteroza
Ablation-resistant carbide Zr0.8Ti0.2C0.74B0.26 for oxidizing environments up to 3,000 °C | Nature Communications
New single phase carbide coating to resist high temps, with notable improvement in ablation resistance and what appears to be an easier manufacturing method.
zirconium  carbide  UHTC  ceramic  materials  science  research  technology  high  temperature  ablation 
july 2017 by asteroza
Velcro®-Inspired SiC Fuzzy Fibers for Aerospace Applications - ACS Applied Mater...
Coating silicon carbide fibers with fuzzy silicon carbide nanotubes/nanowire like a velco surface of fuzzy fibers improves composite ceramic performance in high heat applications.
silicon  carbide  nanotube  nanofiber  reinforced  composite  ceramic  materials  science  research  technology  velcro  surface  treatment  fiber  fuzzy  Delicious 
march 2017 by asteroza
Additive manufacturing of polymer-derived ceramics
UV cured polymer resin with cermaic particles gets printed as a microlattice, then sintered into a pure silicon carbide microlattice, similar to ceramic foams but with 10x strength.
3D  printing  fabbing  materials  science  research  technology  silicon  oxycarbide  carbide  ceramic  microlattice  lattice  truss  octet  cubic  polymer  template  sintering  Delicious 
january 2016 by asteroza
Armor Applications
Interesting hollow silicon carbide ceramic shells impregnating metal to create metal foam armor.
low  weight  lightweight  syntactic  armor  plate  silicon  carbide  ceramic  hollow  shell  sphere  defense  military  research  technology  metal  foam  Delicious 
november 2014 by asteroza
Ceramic has potential in hypersonic flight, discovers an Imperial researcher
Apparently hafnium carbides can run 100C hotter than previously believed, now up to 4050C, making it interesting for spacecraft reentry systems and hypersonic aircraft coatings.
hafnium  carbide  high  temperature  ceramic  materials  science  research  technology  Delicious 
september 2014 by asteroza
Carbon-fiber epoxy honeycombs mimic the material performance of balsa wood | Harvard School of Engineering and Applied Sciences
Interesting way of making honeycomb structures but the fiber alignment direction is not ideal, so it stiffens it up but not in ideal directions.
3D  printing  fabbing  technique  materials  science  research  technology  nanoclay  platelet  silicon  carbide  whisker  chopped  carbon  fiber  thermoset  epoxy  composite  honeycomb  cellular  structure  Delicious 
june 2014 by asteroza
Neutron Absorber Material | Holtec International
New nanoparticle based metal matrix composite basket for spent fuel rods, with such high thermal conductivity that spent fuel can be stuffed into a dry cask after only 3 years in a cooling pond.
Metamic  Metamic-HT  high  temperature  aluminum  boron  carbide  metal  matrix  composite  neutron  absorber  spent  fuel  rod  basket  dry  cask  waste  storage  nuclear  materials  science  research  technology  nanotechnology  powder  metallurgy  nanoparticle  alumina  alloy  dispersoid  Delicious 
december 2013 by asteroza

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