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;