A contact member silicon melt preparation method, and a manufacturing method of a crystalline silicon

The present invention provides the following member contacting the silicon melt, which can significantly increase with respect to the silicon melt liquid-repellent, and the liquid-repellent lasting duration, and is suitable for producing crystalline silicon, the present invention also provides the use of the silicon a contact member manufactured efficiently melt the crystalline silicon, especially high crystallinity crystalline silicon sphere method. The contact member is silicon melt: the presence of a surface having a large number of pores (preferably, 30 to 80% of the occupied area ratio of pores with a pore size dispersion average circle equivalent diameter of 1 ~ 25μm, a depth of each coupling hole than 5μm communication holes), and silicon nitride as a main component of the layer thickness of the porous sintered body of 10 ~ 500μm, it is preferable that the sintered layer is present on a ceramic substrate such as aluminum nitride.