On the isothermal sintering behavior and transparency of glass powders

Preparation of transparent Bi2O3‐ZnO‐B2O3 glass by conventional sintering at low temperatures

“…However, in practice, the main obstacle to the sintering of glass powders is their tendency to crystallize, which inhibits the viscous flow of the glass phase and results in residual pores after sintering. [18][19][20][21][22] The residual pores and crystalline phases lead to light scattering at the pore-solid interfaces and glass-crystal interfaces, thus limiting the transparency of the sintered components to what the cast glass can achieve. As a result, the application of glass components manufactured using the sintering method is restricted in optical applications.…”

“…In the literature, the glass compositions that can achieve transparent glass components using the sintering method are mostly pure SiO 2 or predominantly composed of SiO 2 . [19][20][21][22][23][24][25][26][27][28][29][30][31][32] This is because silicate glasses usually have high glass transition temperature (T g ), excellent thermal stability, and are less prone to crystallization during sintering. On the other hand, there is limited literature on the preparation of transparent glasses of low T g by sintering method.…”

“…In the literature, the glass compositions that can achieve transparent glass components using the sintering method are mostly pure SiO 2 or predominantly composed of SiO 2 19 – 32 . This is because silicate glasses usually have high glass transition temperature ( T g ), excellent thermal stability, and are less prone to crystallization during sintering.…”