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0.06. 0.05. 0.04. 0.03. Mean Differential Fraction. 0.02. 0.01. 0. 0.00. 0.02. 0.04. 0.06. m. Diameter /. m. Fig 1. Single stage sintering. Hybrid two stage sintering. T 1. T 2. Conventional two stage sintering. Temperature. 7 o C min -1. 20 o C min -1. Time. Not to scale.

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  1. 0.06 0.05 0.04 0.03 Mean Differential Fraction 0.02 0.01 0 0.00 0.02 0.04 0.06 m Diameter / m Fig 1

  2. Single stage sintering Hybrid two stage sintering T1 T2 Conventional two stage sintering Temperature 7oC min-1 20oC min-1 Time Not to scale Fig 2

  3. 1.2 As-received 1.0 0.8 Dispex & multi-ultrasound 0.6 Viscosity / Pa s TAC & multi-ultrasound 0.4 0.2 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 Solids loading / vol% Fig 3

  4. Fig 4

  5. 50% SC; Conv 0.4 50% SC; Humid 70% SC; Conv 70% SC; Humid 0.3 Pore volume / cm3 g-1 0.2 0.1 0.0 2 4 6 8 10 20 40 60 80 Pore Diameter / nm Fig 5

  6. b 180 160 single stage sintering 140 120 two stage sintering 100 Avg grain size / nm 80 radiant heating 60 40 hybrid heating 20 c 0 60.0 65.0 70.0 75.0 80.0 85.0 90.0 95.0 100.0 Relative density / % a Fig 6

  7. a b c Fig 7

  8. Sample Fig 8

  9. Fig 9

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