asteroza + ceramic   92

Double-negative-index ceramic aerogels for thermal superinsulation | Science
Weird boron nitride aerogel. Good repeatable crush resistance and extreme temperature swing fracture resistance. Weird in that slightly squeezing it in one direction causes it to compact orthogonally.
ceramic  boron  nitride  aerogel  fracture  temperature  cycling  resistance  materials  science  research  technology 
4 weeks ago by asteroza
New boat hull antifouling paint using ceramic nanoparticles to make a surface so smooth that barnacles can bare stick, and even if they do you can wipe them off with a sponge
marine  antifouling  paint  polythiourethane  ceramic  particle  nanoparticle  materials  science  research  technology  germany  EU 
december 2017 by asteroza
Taking Back Control: Next-Generation Cooking with Solid-State RF Energy [Speaker's Corner] - IEEE Journals & Magazine
Solid state microwave emitters with closed loop feedback could make superior microwave ovens. Offshoot of phased array radar work? Plus potentially more compact and efficient, leading to portable microwave ovens...
solid  state  ceramic  semiconductor  LDMOS  RF  microwave  amplifier  closed  loop  feedback  cooking  oven  kitchen  hardware  electronics  devices 
september 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
Desktop Metal
Using a inkjet binder with multiple nozzles to print metal to be sintered, one pass doe print and layer powdering in one go so no wasted motion for fairly high speed printing.
3D  printing  fabbing  metal  ceramic  inkjet  parallel  head  single  pass 
april 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
Transparent polycrystalline cubic silicon nitride : Scientific Reports
Neat, but requires twice the pressure to make compared to diamond, then again it can work in a hotter regime. Good for engine optical monitoring ports?
transparent  cubic  silicon  nitride  ceramic  spinel  materials  science  research  technology  Delicious 
march 2017 by asteroza
Johnson Battery Technologies, Inc. | Custom Batteries | Lithium-Metal
Fancy all solid state lithium battery by the supersoaker inventer, some sort of ceramic electrolyte?
solid  state  electrode  electrolyte  battery  lithium  energy  storage  ceramic 
august 2016 by asteroza
Boron suboxide: A hard as cubic boron nitride
B60 boron suboxide ceramic seems very hard and useful for certain applications
boron  suboxide  B60  ceramic  materials  science  research  technology  Delicious 
june 2016 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
MAgneto Hydrodynamic Explosive Munition (MAHEM)
Using FCG's to make a tunable magnetic force for explosively formed projectiles, allowing dial-a-yield as well and engineered fragmentation/shrapnel.
DARPA  MAHEM  flux  compression  generator  ferromagnetic  ceramic  liner  explosively  formed  projectile  variable  yield  warhead  weapon  research  technology  Delicious 
december 2015 by asteroza
Z3Dlab |
Interesting zirconia infused titanium powder ceramic composite for 3D printing
france  EU  titanium  zirconia  powder  composite  ceramic  3D  printing  fabbing  manufacturing  materials  science  research  technology  Delicious 
september 2015 by asteroza
Hollow Spheres
These guys are working on innovative ceramic hollow spheres for use in armor applications. One type is just spheres packed onto a backing plate, providing limited flex. The next type is packing spheres into woven tubes of kevlar, creating lumpy bead strings that can be assembled into a flexible armor. Final type is a hex tile module with a limited play interface, allowing small flexibility and easy customization for large area vehicle armor.
engineered  hollow  shell  sphere  hex  heagonal  tile  ceramic  materials  science  research  technology  defense  military  flexible  armor  DARPA  Delicious 
november 2014 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
DDM Systems LAMP
New 3D printer based investment casting technique. Cuts out 7 of 12 steps, possibly a faster alternative to 3D lost wax process. UV laser builds up powdered ceramic resin for cores and molds. Aiming for single crystal directionally solidified equiaxial nickel superalloy hollow turbine blade production.
lamp  large  area  photopolymerization  3D  printer  fabber  ceramic  lost  wax  investment  casting  laser  epitaxy  hardware  electronics  devices  metal  powder  Delicious 
september 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
Using ceramic dots as a kind of standoff offset to prevent direct abrasion of fabric, these bike clothes appear to have a superior resistance to roadrash from falling off a bike.
roadrash  road  rash  injury  abrasion  protection  armor  ceramic  contact  offset  standoff  carbon  fiber  clothing  apparel  biking  clothes  Delicious 
september 2014 by asteroza
High-strength cellular ceramic composites with 3D microarchitecture
Research into 3D printed microstructure honeycombs/truss, which get plated with alumina to make tremendously strong but light materials. Uses a german NanoScribe for the 3D printing.
3D  printing  fabbing  cellular  honeycomb  structure  microstructure  materials  science  research  technology  biomimicry  technical  foam  laser  lithography  microtruss  truss  ceramic  polymer  alumina  composite  Delicious 
february 2014 by asteroza
Wilson Solarpower | Concentrated Solar Generates Low Cost Electricity
Concentrating solar hot air microturbine power generator it seems, with fueled assist at night.
CSP  concentrating  solar  power  ceramic  heat  exchanger  hot  air  turbine  microturbine  generator  microgeneration  hybrid  gas  Delicious 
january 2014 by asteroza
UWE Bristol: News :Could ancient Egyptians hold the key to 3D printed ceramics?
Using an egyptian technique called faience, where glazing material is embedded into a ceramic paste, the material then self glazes in a single firing. This would allow a 3D extruded ceramic object to be single fire glazed.
3D  printer  printing  technique  materials  science  research  faience  self  glazing  ceramic  single  fire  firing  Delicious 
september 2012 by asteroza
Oxygen-separation membranes could aid in CO2 reduction - MIT News Office
Interesting possible combustor design for oxyfuel plants, where a combustor wrapped in this ceramic membrane does heat accelerated oxygen ion transport across the membrane from the air side to the combustor interior. How useful this is for regular oxygen separation is up for debate though, since this seems to want a direct heat source which would be difficult to arrange for a traditional ASU, thus pushing you to cryogenic air separation techniques. Hrm, I wonder if the flow rates and weight would be attractive to aircraft jet engine combustor applications, maybe extending up into a competitor for LACE?
ceramic  membrane  oxygen  ion  separation  separator  materials  science  research  technology  CCS  oxyfuel  combustor  design  Delicious 
may 2012 by asteroza
ULTRAMET - Advanced Materials Solutions
Apparently involved with a new high temp noise suppression foam made from hafnium carbide/silicon carbide that ca be stuffed directly into a combustor to provide combustion noise suppression. The foam has high permeability, allowing gases and combustion to move freely, and the structure helps to create uniform combustion. Though I can't imagine this being useful for any high speed gas /liquid fuel combustors/engines, but the press releases talked about jet engines so maybe it actually can?
metal  ceramic  foam  high  temperature  noise  suppression  materials  science  research  technology  heat  exchanger  rhenium  solar  thermal  rocket  propulsion  space  thruster  Delicious 
may 2012 by asteroza
NREL: News Feature - Breakthrough Furnace Can Cut Solar Costs
Interesting tricks to use the material properties of solar cells to ease the burden of heating them during manufacturing, increasing efficiency and lowering power and cooling requirements. The optical cavity and mirror ceramics are a good fit here, but may not be all that applicable elsewhere though.
optical  cavity  furnace  mirror  ceramic  solar  cell  semiconductor  processing  manufacturing  materials  science  research  technology  production  Delicious 
october 2011 by asteroza
Aluminum encapsulated ceramic tiles for hybrid armor
Interesting methods for getting over issues regarding large surface areas of ceramic armor, by trying to isolate it into modules to prevent propagation of damage after impact, as well as providing an outer metal layer to deal with fragments
defense  military  technology  aluminum  metal  matrix  composite  shell  modular  ceramic  armor  materials  science  research  Delicious 
january 2011 by asteroza
Cambridge University Engineering Department: News item
Using partial remelting, it seems possible to forcibly create large grains in the superconductor improving performance
materials  science  research  technology  partial  remelt  polycrystalline  ceramic  large  grain  bulk  HTS  superconductor  YBCO  Delicious 
july 2010 by asteroza
Site temporarily closed
Seems Cermetica is working on advanced high temperature titanium diboride ceramic coatings for the purpose of an advanced wankel derivative motor with high efficiency. Seems to be a continuation of research by Katherine Logan and Robert Wisner.
Cermetica  high  temperature  ceramic  titanium  diboride  materials  science  research  technology  wankel  ICE  engine  motor  efficiency  propulsion  Delicious 
october 2009 by asteroza
New Sulfur- and Coking-Tolerant Material Could Expand Applications for Solid Oxide Fuel Cells
new ceramic anode for SOFC that is hydrogen sulfide resistant and also carbon coking resistant, that operates at low(er) temps than current fuel cells.
SOFC  anode  materials  science  research  technology  YSZ  yittria  zirconia  ceramic  electrolyte  BZCYYb  barium  zirconium  cerium  yttrium  ytterbium  low  temperature  carbon  coking  sulfur  poisoning  resistance  hydrogen  sulfide  fuelcell  Delicious 
october 2009 by asteroza
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