Here is the English translation of the provided content regarding polysilazane applications in advanced ceramics:

‌Polysilazane in Advanced Ceramics Manufacturing‌

1. ‌Precursor-Derived Ceramics‌

   • Pyrolysis generates ‌Si₃N₄/SiCN ceramics‌ for turbine blades, bearings, and precision components, with flexural strength ‌>800 MPa‌23.

2. ‌Porous Ceramic Sealant‌

   • Fills alumina pores, increasing density from ‌85% to 99%‌711.

3. ‌Carbon Fiber-Reinforced Ceramics‌

   • Acts as a ‌SiC fiber binder‌, enhancing composite fracture toughness by ‌50%‌