Abstract: Atomic Layer Deposition (ALD) and Molecular Layer Deposition (MLD) provide precise and conformal coatings that are employed to modify the properties of powders for additive manufacturing (AM). We have surprisingly discovered that use of a limited number of ALD cycles can impart improved flowability. In various aspects, the coating may provide one or more advantages such as novel material properties, increased flowability, improved sintering, enhanced stability during storage, and prevention of premature sintering.

Abstract: The present disclosure relates to a process for coating an oxide material comprising: (a) providing a particulate material chosen from lithiated nickel-cobalt aluminum oxides, lithiated cobalt-manganese oxides, and lithiated layered nickel-cobalt-manganese oxides, (b) treating the cathode active material with a metal alkoxide, metal amide, alkyl metal compound, metal halide, or metal hydride at a pressure ranging from 5 mbar to 1 bar above ambient pressure, (c) deactivating the material obtained in step (b) with a HF containing gas at ambient pressure, ?wherein step (b) is carried out in a mechanical mixer chosen from compulsory mixers and free-fall mixers, or step (b) is carried out using a moving bed or a fixed bed.

Abstract: The present disclosure relates to a process for coating an oxide material, process comprising: (a) providing a particulate material chosen from lithiated nickel-cobalt aluminum oxides, lithiated cobalt-manganese oxides, and lithiated layered nickel-cobalt-manganese oxides, (b) treating the cathode active material with a metal alkoxide, a metal halide, a metal chloride, a metal amide, or an alkyl metal compound, (c) treating the material obtained in step (b) with a gas containing HF, and, optionally, repeating the sequence of steps (b) and (c), wherein step (b) is carried out in a mechanical mixer, or step (b) is carried out using a moving bed or fixed bed wherein steps (b) and (c) are carried out at a pressure that is in the range of from 5 mbar to 1 bar above ambient pressure.

Abstract: The invention relates to europium-doped silicate phosphors comprising a coating of aluminum oxide, to a process for the preparation of these compounds, and to the use thereof as conversion phosphors or in lamps.