Patent ID: 11891338
Assignee: OULUN YLIOPISTO
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A process for manufacturing ceramic-ceramic composite material, the process comprising:
obtaining an aqueous solution of a first ceramic by dissolving powder of said first ceramic into water;
obtaining a powder containing said first ceramic precipitated on the surface of particles of a second ceramic by mixing powder of said second ceramic having a multimodal particle size where largest particle size is above 50 μm and less than 180 μm, with the aqueous solution of said first ceramic;
obtaining a powder mixture by mixing the powder containing said first ceramic precipitated on the surface of the particles of said second ceramic, with powder of said first ceramic having a particle size below 50 μm;
obtaining an aqueous composition containing said first ceramic and second ceramic, by adding saturated aqueous solution of said first ceramic to the powder mixture;
forming a disc of ceramic-ceramic composite material containing said first ceramic and second ceramic, by compressing the aqueous composition in a mould;
removing water from the ceramic-ceramic composite material by drying the disc;
wherein the content of said first ceramic is 10 vol-% to 35 vol-%, and the content of said second ceramic is above 65 vol-%, in the disc, and
wherein said first ceramic contains at least one of Li2MoO4, Na2Mo2O7, K2Mo2O7, (LiBi)0.5MoO4, Li2WO4, Mg2P2O7, and V2O5.