colloidal graphite

colloidal graphite

[kə′lȯid·əl ′gra‚fīt]
(materials)
Extremely fine flakes of graphite suspended in water, petroleum oil, castor oil, glycerin, or other liquids; used to provide conductive shields on the inside or outside surfaces of electron tubes.
References in periodicals archive ?
Once the charge is neutralized the colloidal graphite becomes insoluble so only a thin, tightly coherent coating is left, which is attracted and partially polymerized to the conditioner.
For improving antifriction molecular treatment of inner surface of cylinder at spark ignition engine, the lubricated oils are additive with addition of solid lubricates under micropowder form as: polyethylene terephthalate (PETE), colloidal graphite, bisulfate of molybdenum (Mo[S.sub.2]), which compacted heterogeneous antifriction film, reducing coefficient of sliding friction in piston-cylinder couple (fig.7) [Ungur,2007].
The colloidal graphite has presented under particle form less of 5im granulation, which has mixed in composition of engine oils in small quantity, being in suspension as its little density and remaining in stability until a temperature of 4000C.
Mineral products covered by these unlimited quotas, which can be filled by any non-EU exporter include certain rare-earth concentrates; alloys of rare-earths and cerium (containing 47% or more cerium); alloys of rare-earths and lanthanum (containing 43% or more lanthanum; zirconium (IV) basic carbonate); calcined bauxite (refractory grade); quartz plate (or glass plate) covered with chromium film and a photosensitive or electro-sensitive resin; calcium sodium phosphate for animal feed additives; povidone (INN)-iodine; antimony ingots; lithium hypochlorite; lithium tantalate wafers; water suspended colloidal graphite; manganese (II,III) oxide containing 70% plus of manganese; and many more.