A Si-based composite bond coat for environmental barrier coatings on a Si-based ceramic matrix composite that protects the CMC from an oxidation environment by in-situ modifying a thermally grown oxide (TGO) using a TGO modifier to suppress cristobalite TGO cracking during thermal cycling in a gas turbine engine.

A method of forming a composite component is provided. The method includes locating a fibrous preform, providing a slurry, mixing the slurry with sacrificial fibers, injecting the slurry into the fibrous preform, heating the fibrous preform, forming channels in the fibrous preform, and densifying the fibrous preform. The sacrificial fibers are suspended in the fibrous preform along an injection pathway such that heating the sacrificial fibers forms the channels along the injection pathway as the sacrificial fibers are burned away.

Provided are a SmFeN magnetic powder which is superior not only in water resistance and corrosion resistance but also in hot water resistance, and a method of preparing the powder. The present invention relates to a method of preparing a magnetic powder, comprising: plasma-treating a gas; surface-treating a SmFeN magnetic powder with the plasma-treated gas; and forming a coat layer on the surface of the surface-treated SmFeN magnetic powder.

Provided are a SmFeN magnetic powder which is superior not only in water resistance and corrosion resistance but also in hot water resistance, and a method of preparing the powder. The present invention relates to a method of preparing a magnetic powder, comprising: plasma-treating a gas; surface-treating a SmFeN magnetic powder with the plasma-treated gas; and forming a coat layer on the surface of the surface-treated SmFeN magnetic powder.

The disclosure relates to a process for preparing particulate materials having high electrochemical capacities that are suitable for use as anode active materials in rechargeable metal-ion batteries. In one aspect, the disclosure provides a process for preparing a particulate material comprising a plurality of composite particles. The process includes providing particulate porous carbon frameworks comprising micro pores and/or mesopores, wherein the porous carbon frameworks have a D.sub.50 particle diameter of at least 20 μm; depositing an electroactive material selected from silicon and alloys thereof into the micropores and/or mesopores of the porous carbon frameworks using a chemical vapour infiltration process in a fluidised bed reactor, to provide intermediate particles; and comminuting the intermediate particles to provide said composite particles.

The disclosure relates to a process for preparing particulate materials having high electrochemical capacities that are suitable for use as anode active materials in rechargeable metal-ion batteries. In one aspect, the disclosure provides a process for preparing a particulate material comprising a plurality of composite particles. The process includes providing particulate porous carbon frameworks comprising micro pores and/or mesopores, wherein the porous carbon frameworks have a D.sub.50 particle diameter of at least 20 μm; depositing an electroactive material selected from silicon and alloys thereof into the micropores and/or mesopores of the porous carbon frameworks using a chemical vapour infiltration process in a fluidised bed reactor, to provide intermediate particles; and comminuting the intermediate particles to provide said composite particles.

A method of manufacturing a material including tantalum carbide (TaC) with a particularly low impurity content, and a TaC material formed by the method are provided. The method includes preparing a base material, and forming a TaC coating layer on a surface of the base material at a temperature of 1,600° C. to 2,500° C.

A method of manufacturing a material including tantalum carbide (TaC) with a particularly low impurity content, and a TaC material formed by the method are provided. The method includes preparing a base material, and forming a TaC coating layer on a surface of the base material at a temperature of 1,600° C. to 2,500° C.

Aspects of the disclosure provide methods of making a coated filtration material. Various methods include providing a base filter material and applying a first coating to the base filter material, the first coating being in nanoparticle form. A second coating is applied on top of the first coating, the second coating being a nanoscale inorganic material. The method further includes removing the first coating in such a way that the second coating remains on the base filter material. Methods of the disclosure can be used to manufacture coated filtration materials having a coating with a porosity of 90% or greater and a pore size in the range of 0.1-0.5 μm.

Aspects of the disclosure provide methods of making a coated filtration material. Various methods include providing a base filter material and applying a first coating to the base filter material, the first coating being in nanoparticle form. A second coating is applied on top of the first coating, the second coating being a nanoscale inorganic material. The method further includes removing the first coating in such a way that the second coating remains on the base filter material. Methods of the disclosure can be used to manufacture coated filtration materials having a coating with a porosity of 90% or greater and a pore size in the range of 0.1-0.5 μm.