A method for coating at least one surface of a substrate with at least one layer comprising at least one ceramic compound, said method being characterized in that it comprises the following steps: a) simultaneous injection: - of solid particles of n ceramic compounds S 1 , ..., S n through a first injection means , n being an integer greater than or equal to 1, and at least 90 percent (%) by number of the solid particles of the n ceramic compounds S 1 , ..., S n having a greatest dimension of more than 5 micrometers (μm) and less than 100 μm ; and - of a liquid phase through a second injection means , the liquid phase comprising a solvent, solid particles of p ceramic compounds L 1 , ..., L p and/or at least one precursor of the solid particles of the p ceramic compounds L 1 , ..., L p , p being an integer greater than or equal to 1, and at least 90% by number of the solid particles of the p ceramic compounds L 1 , ..., L p having a greatest dimension of less than or equal to 5 μm, into a thermal jet , whereby a mixture of the solid particles of the n ceramic compounds S 1 , ..., S n and of the liquid phase is obtained in the thermal jet ; and then b) a projection of the thermal jet , which contains the mixture of the solid particles of the n ceramic compounds S 1 , ..., S n and of the liquid phase , on said surface of the substrate , whereby the layer comprising at least one ceramic compound is formed on said surface; optionally, the sequence of steps a) and b) is repeated one or several times; the granulometric analysis being carried out by laser granulometry. a) simultaneous injection: - of solid particles of n ceramic compounds S 1 , ..., S n through a first injection means , n being an integer greater than or equal to 1, and at least 90 percent (%) by number of the solid particles of the n ceramic compounds S 1 , ..., S n having a greatest dimension of more than 5 micrometers (μm) and less than 100 μm ; and - of a liquid phase through a second injection means , the liquid phase comprising a solvent, solid particles of p ceramic compounds L 1 , ..., L p and/or at least one precursor of the solid particles of the p ceramic compounds L 1 , ..., L p , p being an integer greater than or equal to 1, and at least 90% by number of the solid particles of the p ceramic compounds L 1 , ..., L p having a greatest dimension of less than or equal to 5 μm, into a thermal jet , whereby a mixture of the solid particles of the n ceramic compounds S 1 , ..., S n and of the liquid phase is obtained in the thermal jet ; and then - of solid particles of n ceramic compounds S 1 , ..., S n through a first injection means , n being an integer greater than or equal to 1, and at least 90 percent (%) by number of the solid particles of the n ceramic compounds S 1 , ..., S n having a greatest dimension of more than 5 micrometers (μm) and less than 100 μm ; and - of a liquid phase through a second injection means , the liquid phase comprising a solvent, solid particles of p ceramic compounds L 1 , ..., L p and/or at least one precursor of the solid particles of the p ceramic compounds L 1 , ..., L p , p being an integer greater than or equal to 1, and at least 90% by number of the solid particles of the p ceramic compounds L 1 , ..., L p having a greatest dimension of less than or equal to 5 μm, b) a projection of the thermal jet , which contains the mixture of the solid particles of the n ceramic compounds S 1 , ..., S n and of the liquid phase , on said surface of the substrate , whereby the layer comprising at least one ceramic compound is formed on said surface; <EOS>