| 摘要 |
Provided are a silicon melt contact member which is markedly improved in liquid repellency to a silicon melt, which can retain the liquid repellency permanently, and which is suitable for production of crystalline silicon; and a process for efficient production of crystalline silicon, particularly, spherical crystalline silicon having high crystallinity, by use of the silicon melt contact member. A silicon melt contact member having a porous sintered body layer present on its surface, preferably the sintered body layer being present on a substrate of a ceramic material such as aluminum nitride, wherein the porous sintered body layer consists essentially of silicon nitride, has a thickness of 10 to 500 µm, and has, dispersed therein, many pores preferably having an average equivalent circle diameter of 1 to 25 µm at a pore-occupying area ratio of 30 to 80%, the pores connecting to each other to form communicating holes having a depth of 5 µm or more. |
