• Journal of Inorganic Materials
  • Vol. 38, Issue 4, 461 (2023)
Wenlong LIU1,2, Jin ZHAO1,2,*, Juan LIU1,2, Xiaojian MAO1,2..., Jian ZHANG1,2 and Shiwei WANG1,2,*|Show fewer author(s)
Author Affiliations
  • 11. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
  • 22. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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    DOI: 10.15541/jim20220469 Cite this Article
    Wenlong LIU, Jin ZHAO, Juan LIU, Xiaojian MAO, Jian ZHANG, Shiwei WANG. Microwave Drying of Spontaneous-Coagulation-Cast Wet Alumina Green Body[J]. Journal of Inorganic Materials, 2023, 38(4): 461 Copy Citation Text show less
    Effects of (a) drying methods and (b) microwave power on the volume fraction of residual water in wet alumina green bodies
    1. Effects of (a) drying methods and (b) microwave power on the volume fraction of residual water in wet alumina green bodies
    Effects of (a) drying methods and (b) microwave power on shrinkage behavior of wet alumina green bodies
    2. Effects of (a) drying methods and (b) microwave power on shrinkage behavior of wet alumina green bodies
    Effect of microwave power on the surface temperature of wet alumina green bodies
    3. Effect of microwave power on the surface temperature of wet alumina green bodies
    Photos of alumina green bodies dried by (a, e) conventional drying and microwave drying ((b, f) 250 W, (c, g) 400 W, and (d, h) 550 W)
    4. Photos of alumina green bodies dried by (a, e) conventional drying and microwave drying ((b, f) 250 W, (c, g) 400 W, and (d, h) 550 W)
    Effects of (a) drying methods and (b) microwave power on pore-size distribution of alumina green bodies
    5. Effects of (a) drying methods and (b) microwave power on pore-size distribution of alumina green bodies
    Fracture surfaces of alumina green bodies(a) Microwave drying (250 W); (b) Conventional drying
    6. Fracture surfaces of alumina green bodies(a) Microwave drying (250 W); (b) Conventional drying
    Moisture distributions of wet alumina green bodies in the drying process(a) Conventional drying for 0, 2, 4, 8, and 15 h; (b) 250-W microwave drying for 0, 0.3, 0.6, 1.2, and 2 h
    7. Moisture distributions of wet alumina green bodies in the drying process(a) Conventional drying for 0, 2, 4, 8, and 15 h; (b) 250-W microwave drying for 0, 0.3, 0.6, 1.2, and 2 h
    Effect of drying methods on flexural strength of alumina green bodies and ceramics
    8. Effect of drying methods on flexural strength of alumina green bodies and ceramics
    Drying method Microwave power/WCRP/h Residual water after CRP/% (in vol.) Residual water after drying/% (in vol.)
    Conventional10(20.4±1.5)0.8
    Microwave2501.8(11.2±1.4)0.6
    4001.3(9.4±1.4)0.5
    5501.0(7.7±0.7)0.4
    Table 1.

    CRP and residual water (after CRP and drying) of samples

    Drying methodMicrowave power/WShrinkage stop time/h Shrinkage/%
    Conventional6.0(4.9±0.1)
    Microwave2501.0(5.2±0.1)
    4000.7(5.1±0.1)
    5500.5(4.8±0.1)
    Table 2.

    Shrinkage stop time and shrinkage of samples

    Wenlong LIU, Jin ZHAO, Juan LIU, Xiaojian MAO, Jian ZHANG, Shiwei WANG. Microwave Drying of Spontaneous-Coagulation-Cast Wet Alumina Green Body[J]. Journal of Inorganic Materials, 2023, 38(4): 461
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