Abstract
Water debinding technique for ceramic injection moulding is competitive for its high debinding rate and environmental friendliness. In this research, the relationship between debinding ratio and debinding time at different temperatures was determined. The results showed that the water debinding process could be divided into dissolution controlled stage and diffusion controlled stage. The apparent interdiffusion coefficient was defined to investigate the impact of the porosity and pores tortuosity on the diffusion. A unified equation valid for samples with different dimensions was deduced. In addition, the microstructure evolution of the green body during water debinding was characterised by formation of the connected porosity and variation of the pore size distribution.
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