Abstract: A thixotropically molded product includes: a matrix portion containing Mg as a main component; and a particle portion dispersed in the matrix portion and containing ?-Al2O3 as a main component. In a cross section, a total area fraction of the particle portion in a range of 500 ?m square around a point at a depth of 1 mm from a surface is 0.5% or more and 30.0% or less.

Abstract: A thixotropically molded product includes: a matrix portion containing Mg as a main component; a first particle portion dispersed in the matrix portion and containing SiC as a main component; a second particle portion dispersed in the matrix portion and containing Mg2Si as a main component; and a third particle portion dispersed in the matrix portion and containing MgO as a main component. An area fraction of the first particle portion in a cross section is 0.68 or more and 19.6% or less.

Abstract: A thixotropically molded product includes: a matrix portion containing Mg as a main component; and carbon fibers dispersed in the matrix portion. An area fraction of the carbon fibers in a cross section is 1.0% or more and 30.0% or less. An average fiber length of the carbon fibers may be 15 ?m or more and 150 ?m or less.

Abstract: A thixotropic molding material includes: a metal body containing Mg as a main component; AlN particles adhering to a surface of the metal body and containing AlN as a main component; and silica particles interposed between the metal body and the AlN particles, having an average particle diameter smaller than an average particle diameter of the AlN particles, and containing a silicon oxide as a main component. A mass fraction of the AlN particles in a total mass of the metal body and the AlN particles is 3.0% or more and 30.0% or less.

Abstract: A thixotropically molded product that generates hydrogen by contact with an aqueous solution includes: a matrix portion containing Mg as a main component; and a first particle portion dispersed in the matrix portion and containing, as a main component, any one of Fe, Ni, Co, Cu, and a compound containing at least one of the elements. An average particle diameter of the first particle portion in a cross section is 30.0 ?m or less, and an area fraction of the first particle portion in the cross section is 0.5% or more and 20.0% or less.

Abstract: A thixotropically molded product includes: a matrix portion containing Mg as a main component; and a first particle portion dispersed in the matrix portion and containing c-BN or w-BN as a main component. An average particle diameter of the first particle portion in a cross section is 10.0 ?m or less, and an area fraction of the first particle portion in the cross section is 2.0% or more and 20.0% or less.

Abstract: A thixomolding material includes: a metal body that contains Mg as a main component; and a coating portion that is adhered to a surface of the metal body via a binder and contains SiC particles containing SiC as a main component. A mass fraction of the SiC particles in a total mass of the metal body and the SiC particles is 2.0 mass % or more and 40.0 mass % or less. The binder may contain waxes. A content of the binder may be 0.001 mass % or more and 0.200 mass % or less.

Abstract: A thixomolding material includes: a metal body that contains Mg as a main component; and a coating portion that is adhered to a surface of the metal body via a binder and contains SiC particles containing SiC as a main component. A mass fraction of the SiC particles in a total mass of the metal body and the SiC particles is 2.0 mass % or more and 40.0 mass % or less. The binder may contain waxes. A content of the binder may be 0.001 mass % or more and 0.200 mass % or less.

Abstract: A method for manufacturing a powder-modified magnesium alloy chip for thixomolding includes a drying step of heating a mixture containing an Mg chip containing Mg as a main component, a C powder containing C as a main component, a binder, and an organic solvent to dry the organic solvent contained in the mixture, and a stirring step of stirring the mixture heated in the drying step.

Abstract: An injection molding material for magnesium thixomolding includes: a powder containing Mg as a main component; and a chip containing Mg as a main component, in which a proportion of the powder in the injection molding material for magnesium thixomolding is 5 mass % or more and 45 mass % or less, and a tap density of the powder is 0.15 g/cm3 or more.

Abstract: A thixomolding material includes: a metal body that contains Mg as a main component; and a coating portion that is adhered to a surface of the metal body via a binder and contains C particles containing C as a main component. A mass fraction of the C particles in a total mass of the metal body and the C particles is 5.0 mass % or more and 40.0 mass % or less. The binder may contain waxes. The C particles may be graphite particles.

Abstract: A thixomolding material includes: a metal body that contains Mg as a main component; and a coating portion that is adhered to a surface of the metal body via a binder and contains SiC particles containing SiC as a main component. A mass fraction of the SiC particles in a total mass of the metal body and the SiC particles is 2.0 mass % or more and 40.0 mass % or less. The binder may contain waxes. A content of the binder may be 0.001 mass % or more and 0.200 mass % or less.

Abstract: A thixomolding material includes: a metal body that contains Mg as a main component; and a coating portion that is adhered to a surface of the metal body via a binder and contains Si particles containing Si as a main component. An average particle diameter of the Si particles is 1 ?m or more and 100 ?m or less, and a mass fraction of the Si particles in a total mass of the metal body and the Si particles is 1.0 mass % or more and 30.0 mass % or less. The binder may contain waxes. A content of the binder may be 0.001 mass % or more and 0.200 mass % or less.

Abstract: A thixomolding material includes: a metal body that contains Mg as a main component; and a coating portion that is adhered to a surface of the metal body via a binder and contains SiO2 particles containing SiO2 as a main component. An average particle diameter of the SiO2 particles is less than 20.0 ?m, and a mass fraction of the SiO2 particles in a total mass of the metal body and the SiO2 particles is 1.0 mass % or more and 40.0 mass % or less. The binder may contain waxes. A content of the binder may be 0.001 mass % or more and 0.200 mass % or less.

Abstract: An injection molding material for magnesium thixomolding includes: a powder containing Mg as a main component; and a chip containing Mg as a main component, in which a proportion of the powder in the injection molding material for magnesium thixomolding is 5 mass % or more and 45 mass % or less, and a tap density of the powder is 0.15 g/cm3 or more.

Abstract: A method for manufacturing a powder-modified magnesium alloy chip for thixomolding includes a drying step of heating a mixture containing an Mg chip containing Mg as a main component, a C powder containing C as a main component, a binder, and an organic solvent to dry the organic solvent contained in the mixture, and a stirring step of stirring the mixture heated in the drying step.