Disclosed are a sagger for sintering lithium composite transition metal oxide and a preparation method thereof. The sagger includes a substrate layer and a shallow layer on a surface of the substrate layer, and a coating layer. The substrate layer is prepared from the following raw materials: silicon carbide, magnesia-alumina spinel, aluminum oxide-magnesium oxide-yttrium oxide composite fiber, zircon powder and a binding agent; the shallow layer is prepared from the following raw materials: silicon carbide, magnesia-alumina spinel, aluminum oxide-titanium oxide composite fiber, yttrium oxide-zirconium oxide composite fiber and a binding agent; and the coating layer is prepared from the following raw materials: silicon carbide, magnesia-alumina spinel, magnesium oxide, zirconium oxide fiber, lithium composite transition metal oxide powder and a binding agent. The sagger of the present disclosure has properties of good corrosion resistance and a small coefficient of thermal expansion.

Disclosed are a sagger for sintering lithium composite transition metal oxide and a preparation method thereof. The sagger includes a substrate layer and a shallow layer on a surface of the substrate layer, and a coating layer. The substrate layer is prepared from the following raw materials: silicon carbide, magnesia-alumina spinel, aluminum oxide-magnesium oxide-yttrium oxide composite fiber, zircon powder and a binding agent; the shallow layer is prepared from the following raw materials: silicon carbide, magnesia-alumina spinel, aluminum oxide-titanium oxide composite fiber, yttrium oxide-zirconium oxide composite fiber and a binding agent; and the coating layer is prepared from the following raw materials: silicon carbide, magnesia-alumina spinel, magnesium oxide, zirconium oxide fiber, lithium composite transition metal oxide powder and a binding agent. The sagger of the present disclosure has properties of good corrosion resistance and a small coefficient of thermal expansion.

A method of applying a circumferential coating material on a circumferential surface of a ceramic honeycomb structure to form a circumferential coat layer. The method includes vertically aligning the longitudinal axis of the ceramic honeycomb structure, rotating the ceramic honeycomb structure around the vertically-aligned longitudinal axis, and applying the circumferential coating material on the circumferential surface of the rotating honeycomb structure at a discharge speed of 50 to 120 mm/s, calculated by
Discharge speed V [mm/s]=Supplied amount q [g/s] of circumferential coating material(Density [g/mm.sup.3] of circumferential coating materialArea S [mm.sup.2] of discharge opening).

A method of manufacturing a honeycomb structure, the method including: a circumferential coat layer forming process of applying a circumferential coating material on a circumferential surface of a ceramic honeycomb structure to form a circumferential coat layer, the circumferential coat layer forming process including: a rotating process of matching an axial direction of the honeycomb structure; and an applying process of discharging the circumferential coating material to apply the circumferential coating material on the circumferential surface of the honeycomb structure that rotates, wherein in the applying process, a discharge speed of the circumferential coating material, calculated by Equation (1), discharged from the discharge nozzle is 50 to 120 mm/s, and

Discharge speed V [mm/s]=Supplied amount q [g/s] of circumferential coating material(Density [g/mm.sup.3] of circumferential coating materialArea S [mm.sup.2] of discharge opening)(1).

A method of forming a protective layer on an interconnect for an electrochemical cell stack includes coating at least one side of the interconnect with a metal oxide powder to form a protective layer, sintering the coated interconnect in an inert atmosphere to at least partially reduce the protective layer, and oxidizing the sintered interconnect in an oxidizing atmosphere to oxidize and densify the protective layer.

A kiln furniture for a powder includes an alkali, in particular Li, including a porous ceramic body forming a cavity or a container for the powder, wherein the ceramic body with open porosity of between 10 and 40% and with equivalent pore diameter between 0.5 and 25 micrometers is coated on at least part of its inner surface with a ceramic coating, the coating including a compound selected from alumina, a lithium aluminate optionally including silicon optionally silicon, aa magnesia-alumina spinel, zirconia, optionally stabilized, hafnia, yttria; having an average thickness of between 50 and 500 micrometers; a total porosity of less than 15% by volume and a volume fraction of pores of diameter greater than or equal to 2 micrometers that is less than 2.5%.

A kiln furniture for a powder includes an alkali, in particular Li, including a porous ceramic body forming a cavity or a container for the powder, wherein the ceramic body with open porosity of between 10 and 40% and with equivalent pore diameter between 0.5 and 25 micrometers is coated on at least part of its inner surface with a ceramic coating, the coating including a compound selected from alumina, a lithium aluminate optionally including silicon optionally silicon, aa magnesia-alumina spinel, zirconia, optionally stabilized, hafnia, yttria; having an average thickness of between 50 and 500 micrometers; a total porosity of less than 15% by volume and a volume fraction of pores of diameter greater than or equal to 2 micrometers that is less than 2.5%.

There is provided a composition for joining and/or treating ceramic materials. The composition can comprise approximately 15 wt % to approximately 90 wt % ceramic nanoparticles, approximately 0.1 wt % to approximately 8 wt % dispersant, and approximately 2 wt % to approximately 84.9 wt % solvent. There is also provided a method of joining a first ceramic part and a second ceramic part at a joining interface to form a joined ceramic component, and a method of treating a ceramic component at a treatment surface to form a treated ceramic component. There is further provided a joined ceramic component.

There is provided a composition for joining and/or treating ceramic materials. The composition can comprise approximately 15 wt % to approximately 90 wt % ceramic nanoparticles, approximately 0.1 wt % to approximately 8 wt % dispersant, and approximately 2 wt % to approximately 84.9 wt % solvent. There is also provided a method of joining a first ceramic part and a second ceramic part at a joining interface to form a joined ceramic component, and a method of treating a ceramic component at a treatment surface to form a treated ceramic component. There is further provided a joined ceramic component.