A process for post-treatment of electroceramic composite material is disclosed. The process comprises introducing electroceramic composite material and flow-able organometallic compound to a pressure chamber, and degassing (1) the electroceramic composite material by creating a vacuum or underpressure in the pressure chamber, while the electroceramic composite material is immersed (2) in said organometallic compound. Then the pressure is elevated to an atmospheric pressure, wherein said flowable organometallic compound is absorbed (3) into at least part of the pores of the composite material. The electroceramic composite material containing said organometallic compound absorbed into said pores, is then treated (4) with water, water vapour and/or other chemical, thereby producing metal oxide impregnated electroceramic material containing solid metal oxide absorbed into said pores. Instead of flowable organometallic compound, a suspension of metal or metal oxide nanoparticles may be used for the post-treatment.

The present invention relates to a process for producing a silicon carbide-containing body (100), characterized in that the process has the following process steps: a) providing a mixture (16) comprising a silicon source and a carbon source, the silicon source and the carbon source being present together in particles of a solid granular material; b) arranging a layer of the mixture (16) provided in process step a) on a carrier (12), the layer of the mixture (16) having a predefined thickness; and c) treating the mixture (16) arranged in process step b) over a locally limited area with a temperature within a range from 1400 C. to 2000 C. according to a predetermined three-dimensional pattern, the predetermined three-dimensional pattern being selected on the basis of the three-dimensional configuration of the body (100) to be produced. Such a process allows simple and inexpensive production even of complex structures from silicon carbide.

The invention provides a cathode active material for use in a rechargeable battery, comprising a coated lithium nickel oxide powder or a coated lithium nickel manganese oxide powder, the powder being composed of primary particles provided with a glassy lithium silicate surface coating. A method for preparing the cathode active material comprises the steps of: providing a lithium transition metal based oxide powder, providing an alkali mineral compound comprising a Li.sub.2xSiO.sub.30.5x compound, wherein 0<x<2, mixing the lithium transition metal based oxide powder and the alkali mineral compound to form a powder-mineral compound mixture, and heat treating the mixture at a temperature T whereby lithium is extracted from the surface of the metal based oxide powder to react with the alkali mineral compound, and a glassy surface coating is formed comprising a Li.sub.2xSiO.sub.30.5x compound, wherein x<x<2.

An abrasive article includes a polycrystalline material comprising abrasive grains and a filler material selected from the group of materials consisting of tungstate, molybdate, vanadate, and a combination thereof. Earth-boring tools comprise a bit body and a cutting element carried by the bit body. The cutting element comprises a polycrystalline material comprising abrasive grains, a catalyst material, and a filler material selected from the group of materials consisting of tungstate, molybdate, vanadate, and a combination thereof.

Compositions and methods of producing discrete nanotubes and nanoplates and a method for their production. The discrete nanotube/nanoplate compositions are useful in fabricated articles to provide superior mechanical and electrical performance. They are also useful as catalysts and catalyst supports for chemical reactions.

At least partial substitution of zirconium by hafnium in ion-conducting zirconium-based ceramics provides enhanced chemical stability in alkaline and acid environments.

A printable material in ink form for forming electronic and structural components capable of high temperature performance may include a polymeric or oligomeric ceramic precursor. The material may also include a filler material and an optional liquid carrier. The ceramic precursor materials may be silicon carbide, silicon oxycarbide, silicon nitride, silicon carbonitride, silicon oxycarbonitride, gallium containing group 13 oligomeric compounds and mixtures thereof. The ceramic precursor may be deposited by a direct ink writing (DIW) process.

The invention relates to a batch for producing an unshaped refractory ceramic product, to a method for producing a fired refractory ceramic product, to a fired refractory ceramic product and to the use of an unshaped refractory ceramic product.

Setter plates are fabricated from Li-stuffed garnet materials having the same, or substantially similar, compositions as a garnet Li-stuffed solid electrolyte. The Li-stuffed garnet setter plates, set forth herein, reduce the evaporation of Li during a sintering treatment step and/or reduce the loss of Li caused by diffusion out of the sintering electrolyte. Li-stuffed garnet setter plates, set forth herein, maintain compositional control over the solid electrolyte during sintering when, upon heating, lithium is prone, to diffuse out of the solid electrolyte.

The invention relates to solid-state electrolytes for use in lithium-air batteries or in lithium-water batteries. It is the object of the invention to provide solid electrolyte for use in lithium-air batteries or lithium-water batteries, with the solid electrolyte having sufficient strength, good conductivity for lithium ions, imperviousness for gas and water resistance and being inexpensive in manufacture. The solid-state electrolyte in accordance with the invention has an open-pore ceramic carrier substrate. In this respect, at least one layer which is conductive for lithium ions, which has an electrical conductivity of at least 10.sup.5 Scm.sup.1 and which is gas-impervious is formed on the surface facing the cathode. In this respect, the carrier substrate has greater mechanical strength and a larger layer thickness than the at least one layer.