Densification and crystallization of glass powder compacts during constant heating rate sintering

摘要: Abstract Heating microscopy was used to study the interaction between processes of densification and crystallization glass powder compacts under constant heating rate sintering conditions without application external loads. For barium magnesium aluminosilicate (BMAS) sintered 800–1100 °C, it has been shown that relative rates can be controlled by changing rate. Samples at a high 15 K min−1 could fully densified in amorphous state, delaying onset crystallization. In samples low 1 min−1, coincided with termination ∼ 1000 °C. Since experiments were performed an loads, results are applicable for manufacturing dense BMAS glass-ceramics via pressureless route.