Patent ID: 10508362

Abstract:
A substrate mounting member according to the present invention is a member for mounting a SiC substrate for epitaxial growth, which includes a wafer plate including a SiC polycrystal, and a supporting plate configured to be placed on the wafer plate, include no SiC polycrystal and have a surface serving as a SiC substrate placing surface, the surface being on the side opposite to a surface in contact with the wafer plate, and in which a thickness h [mm] of the supporting plate satisfies an expression h4≤3 pa4(1−v2){(5+v)/(1+v)}/16E when a force applied to a unit area of the supporting plate by a self-weight of the supporting plate and by the SiC substrate is represented as p [N/mm2], a radius of the supporting plate as a [mm], a Poisson's ratio as v and a Young's modulus as E [MPa].