Ceramic matrix composite and method for manufacturing same

A method for manufacturing a ceramic matrix composite including a matrix and reinforcing fibers provided in the matrix, the method comprising:

• a step (A) of infiltrating a fiber body with powder of a ceramic material that becomes a part of the matrix, the fiber body being constituted by the reinforcing fibers;
• a step (B) of arranging, in a liquid material for the matrix, the fiber body infiltrated with the powder;
• and
• a step (C) of heating the fiber body in a state where the fiber body is arranged in the liquid material, thereby bringing the liquid material into a film-boiling state such that ceramic derived from the liquid material is generated as a part of the matrix in the fiber body,
• wherein the step (C) includes:
• a step (C1) of heating the fiber body, thereby bringing the liquid material into the film-boiling state such that the ceramic is generated in the fiber body;
• a step (C2) of cooling the fiber body until a temperature of the fiber body becomes equal to or lower than a low-side target temperature lower than a boiling point of the liquid material;
• and
• repeating the step (C1) and the step (C2) in the state where the fiber body is arranged in the liquid material,
• wherein the repeating the step (C1) and the step (C2) includes:
• raising the temperature of the fiber body by heating the fiber body at the step (C1);
• starting the step (C2) at a timing that the temperature of the fiber body becomes equal to or higher than a high-side target temperature in course of raising the temperature of the fiber body at the step (C1);
• lowering the temperature of the fiber body by cooling the fiber body at the step (C2);
• and
• starting the step (C1) again at a timing that the temperature of the fiber body becomes equal to or lower than the low-side target temperature in course of lowering the temperature of the fiber body at the step (C2).