The traditional single crystal thermal field system mainly uses high-purity, high- strength isostatic pressure graphite materials, but there are:
1) Graphite is prone to cracking under repeated high-temperature thermal shock, which can lead to component damage and cause safety accidents;
2) Impurities evaporated from graphite components or particles formed by graphite degradation can contaminate the silicon melt and affect crystal quality;
3) When preparing large-diameter products, there are difficulties in forming traditional graphite thermal field materials.
Carbon based composite materials have:
1) High cost-effectiveness, long product lifespan, reduced frequency of component replacement, thereby improving equipment utilization and reducing maintenance costs;
2) It can be made thinner, allowing for the production of single crystal products with larger diameters using existing equipment;
3) High safety, less prone to cracking under repeated high-temperature thermal shock; 4) It can achieve near net forming and has obvious advantages in the field of large diameter single crystal furnace thermal field systems.
Shandong province pingyuan city east development zone
