High-purity oxygen-free copper grades are used for high-temperature applications in reducing atmospheres or in motors or generators cooled by hydrogen gas.
12.
Another scotophor used in dark-trace CRTs is a modified sodalite, fired in reducing atmosphere or having some chlorides substituted with sulfate ions.
13.
Nonetheless, some important evolution has occurred, most notably the oxygen catastrophe that replaced the primordial reducing atmosphere with a highly oxidizing environment.
14.
:: : : : : Mmm, but you needed the initial high levels of CO2 to have a reducing atmosphere necessary to spark life.
15.
There the reducing atmosphere reduced the ions back to metals, which then came together forming the nanoparticles that give the color and optical effects.
16.
These same clays, when fired in a reducing atmosphere ( i . e . devoid of oxygen ) often become gray or black in color.
17.
The colour comes from iron oxide fired in a reducing atmosphere, and the colour varies with the temperature and the strength and timing of the reduction.
18.
A "'reducing atmosphere "'is an reducing gases such as hydrogen, carbon monoxide, and gases such as hydrogen sulfide that would be oxidized by any present oxygen.
19.
Things which would burn could be heated in a reducing atmosphere, or they could be ground up and dissolved in a solvent, creating a liquid solution.
20.
A reducing atmosphere, produced by limiting the flow of air into the kiln, or burning coal rather than wood, can strip oxygen from the surface of clays and glazes.
