Method for producing powder composition for ceramic coating and its use

The present disclosure relates to a method for producing a powder composition suitable for use in the preparation of an alumina based ceramic coating. More particularly the disclosure relates to preparing the powder composition by heat treating a mixture of primary particles agglomerates, wherein the mixture of primary particles consists of between 35 and 60 mol- percent cations and between 40 and 65 mol- percent anions and the cations comprises between 1:3 and 1:40 of the total sum of Ca- and Si-ions (mol- percent): Al-ions (mol- percent). The mixture typically comprises Ca-ions (mol- percent): Si-ions (mol- percent) in a ratio of 1:2.5 - 2.5:1. The disclosure further relates to a powder composition obtained by the method of the disclosure and the use of the powder composition in thermal spraying to form a glass ceramic coating and the use of the powder composition for forming a glass ceramic structure in-situ in thermal spray deposition.

Patent family as of 16.7.2026
EP4638372 A1, FI131339 B, FI20226162 A, WO24134031 A1