| abstract |
PROBLEM TO BE SOLVED: To provide a preformed body in which a reaction between a component causing a reduction in heat treatment effect in a preformed body and magnesium and a method of manufacturing the same, and to use the preformed body as a reinforcing material And providing a composite member. SOLUTION: In a preform used as a reinforcing material of a composite member, the preform is formed of at least one kind selected from the group consisting of oxide ceramic particles and oxide ceramic whiskers. , Which is obtained by sintering a metal oxide, wherein the oxide-based ceramic is a ceramic that can react with magnesium, and the metal oxide has a standard energy of formation of oxide equal to or less than that of magnesium oxide. Is a metal oxide of A compound formed by the reaction between the oxide ceramic and the metal oxide is formed. |