TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The coating further comprises an inorganic corrosion inhibitor compound. The powder is a carbon powder. The coating is selected from alkali metal salts, alkali earth metal salts, ammonium salts, and alkyl ether phosphates.    TECHNOLOGY FOCUS - METALLURGY - Preferred Components: The powder is selected from metal, metal alloy, organic metal compounds, inorganic metal compounds and/or carbon (preferably metals selected from copper, titanium, nickel, beryllium, iron, silver, gold, their alloys, blends, and compounds; carbons selected from graphite, carbon nanotubes, diamond, fullerene carbons of the general formula (C2)n, and their blends). The powder selected from aluminum and aluminum alloys. The coating further comprises a cerium compound. The powder is selected from copper, silver, iron, steel and their alloys.n = at least 30.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The coating further comprises a coating acting as at least one of imparting composition stabilization, corrosion resistance and acting as a dispersant. The coating acts as dispersant of the powder in the carrier medium by at least one of increasing settling time of the powder, passivating the powder, reducing interfacial tension of the powder and increases adhesion to the powder. The powder further comprises an average particle size of less than 10 microns (preferably 10 nm - 2 mu). The carrier medium is selected from solids, fluids, phase change materials and interpolymer. The carrier medium further comprises a phase change medium selected from salt-hydrates, organic eutectics, clathrate-hydrates, paraffins, hydrocarbons, Fischer-Tropsch hard waxes, inorganic eutectic mixtures, acetamide, methyl fumarate, myristic acid, Glauber's salt, paraffin wax, fatty acids, methyl-esters, methyl palmitate, methyl stearate, mixtures of short-chain acids, capric and lauric acid, coconut fatty acids, propane and methane. The coating is selected from azoles, benzotriazole, tolytriazole, halogen resistant azoles, and their substituted derivatives. The powder is a carbon powder and the coating further comprises a lignin-based compound, ethylene oxide/propylene oxide (EO/PO) block copolymers, anionic surfactants, ionic surfactants and nonionic surfactants. The coating is selected from mercapto-substituted thiodiazoles, amino-substituted thiodiazoles, and mercapto-substituted triazole, amino-substituted triazoles, oleyl imidazoline, triethanolamine and monoethanolamine. The lignin-based compound further comprises at least one of a monovalent salt of lignin, free acid lignin, polyvalent metal salts of lignin, lignin sulfonic acid, alkali metal salts of lignin sulfonic acid, alkaline earth metal salts of lignin sulfonic acid, and ammonium salts of lignin sulfonic acid. Preferred Method: (m1) Involves suspending the coated powder in a heat transfer medium. The surface-coated powder is prepared by complexing a coating compound with powder particles; adsorbing a coating compound on surfaces of the powder particles; or imparting a metal coating onto surfaces of powder particles and subsequently complexing the metal coating with another coating. The coating compound forms at least a molecular monolayer of the coating compound on surfaces of the powder particles. (m2) involves suspending the coated powder in an electrically conductive medium.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The coating further comprises an inorganic corrosion inhibitor compound. The powder is a carbon powder. The coating is selected from alkali metal salts, alkali earth metal salts, ammonium salts, and alkyl ether phosphates.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The interpolymer is prepared by polymerizing alpha-olefin monomer with vinylidene aromatic monomer and aliphatic vinylidene monomers with a volume ratio of 10:1 - 1:100 and a weight percent of 99 - 1% (preferably prepared with polymerizable ethylenically unsaturated monomer). The carrier medium is selected from 98 compounds given in specification e.g. conjugated polymers. SPECIFIC COMPOUNDS - TRY - Preferred Components: The coating further comprises a coating acting as at least one of imp    EXAMPLE - A solution of COBRATEC TT 100 (RTM; tolyltriazole) was dissolved in a volatile organic solvent comprising 2-butanone and stirred on a magnetic stirring hot plate. Cu 110 (RTM; copper powder) (3 wt.%) was reduced to a powder of an average particle size of 50 nanometers. The resulting copper powder was slurried in the solution for about 15 minutes at 50 - 55degreesC. The coated product was isolated by filtration, washed once with solvent and then dried in air or by oven drying. The product showed enhanced thermal transfer properties and dispersion characteristics when combined with heat transfer media as compared with an untreated copper powder.