Method for manufacturing component made of hard brittle material and component made of hard brittle material

The method for manufacturing the component made of the hard brittle material comprises the following steps of: preparing a base material made of the hard brittle material; and a step for subjecting the base material to a concavo-convex process in which a convex portion protruding in the first direction and a bottom surface surrounding the convex portion are formed on the base material by the concavo-convex process, and the bottom surface expands in a plane defined by a second direction intersecting the first direction and a third direction intersecting the first direction and the second direction. In a cross section defined by the first direction and the second direction, when the first direction is z and the second direction is x, the bottom surface and a side surface of the protruding portion connected to the bottom surface satisfy the relationship z = Ax2-Bx, A is 0.005-0.200, and B is 0.050-0.955. 硬质脆性材料制部件的制造方法包括：准备由硬质脆性材料构成的基材的工序；和对基材实施凹凸加工的工序，通过凹凸加工，在基材形成向第一方向突出的凸部和包围凸部的底面，底面在由与第一方向交叉的第二方向和与第一方向及第二方向交叉