| Tape Casting of Al_2O_3-TiB_2/Al_2O_3-Nano-TiC Multilayer Composites |
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| 摘 要： | Ceramic tapes, containing Al2O3-25 wt pct TiB2(B) and Al2O3-25 wt pct nano-TiC (c), have been obtained by tape casting process. Numerous tapes (about 60～80 tapes) were prepared by stacking in turn the composition (B) and (C), laminating under 10 MPa pressure, eliminating the solvent and burning out the polymer additives. The final green bodies were hot pressed at 1750℃ and 30 MPa. The composite has a bending strength of 568 MPa and a fracture toughness of 5.8 M Pa·m1/2. SEM analysis exhibits that Al2O3 particle growth was inhibited by TiC particles in C. but TiB2 particles could not hinder Al2O3 growth in B. The curves of GTA indicates that all organic additives could be removed completely above 600℃
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| 收稿时间： | 1997-07-28 |
Tape Casting of Al_2O_3-TiB_2/Al_2O_3-Nano-TiC Multilayer Composites |
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| Authors: | Yuping ZENG Dongliang JIANG Shouhong TAN and Jingkun GUO |
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| Affiliation: | Yuping ZENG,Dongliang JIANG,Shouhong TAN and Jingkun GUO(Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai,China) |
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| Abstract: | Ceramic tapes, containing Al2O3-25 wt pct TiB2(B) and Al2O3-25 wt pct nano-TiC (c), have been obtained by tape casting process. Numerous tapes (about 60～80 tapes) were prepared by stacking in turn the composition (B) and (C), laminating under 10 MPa pressure, eliminating the solvent and burning out the polymer additives. The final green bodies were hot pressed at 1750℃ and 30 MPa. The composite has a bending strength of 568 MPa and a fracture toughness of 5.8 M Pa·m1/2. SEM analysis exhibits that Al2O3 particle growth was inhibited by TiC particles in C. but TiB2 particles could not hinder Al2O3 growth in B. The curves of GTA indicates that all organic additives could be removed completely above 600℃ |
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