Development of the Pore Filling Model

2 PORE FILLING MODEL AND THEORY 16.2.1 Development of the Pore Filling Model 

The pore filling model of liquid phase sintering was developed via a series of experimental observations. Kwon and Yoon first observed 

Because of the liquid pressure decrease, i.e. the capillary pressure increase by pore filling, the shape of the grains tends to become more anhedral during their growth in order to meet the sudden change in liquid pressure (see Section 3.3). 

The fundamental difference between the pore filling model and the contact flattening model is the material transport mechanism for densification. In the former, the mechanism is liquid flow as a result of grain growth while, in the 

2 Pore FillingTheory Grain-Growth-Induced Densification 

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