Toughening Effects of Carbon Nanotubes on 3Y-ZrO₂ via Different Material Molding Technologies

Abstract:

In order to research the toughening effects of carbon nanotubes on 3Y-ZrO₂ via different moulding methods. 3Y-ZrO₂ and 3Y-ZrO₂ with two kind of carbon nanotubes were prepared by compression moluding forming and gel-casting. And all of the green bodies were sintering at 1600°C in high temperature furnace. The X-ray diffraction and density of sintered bodies, microstructural of fracture surface and fracture toughness were characterized and analyzed. Results shown that gel-casting is better than compression about toughening 3Y-ZrO₂ by carbon nanotubes. For gel-casting, the density is nearly the same and fracture toughness has been improved which is form 5.17MPa·m^1/2 to 5.63 MPa·m^1/2_. For compression moulding forming, the density was reduced by the aggregation of carbon nanotubes. The fracture toughness can’t improve by carbon nanotubes.

• Periodical: Key Engineering Materials (Volume 703)
• Pages: 87-93
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.703.87
• Online since: August 2016
• Authors: Cui Can Wang, Chang Lian Chen*, Ma Yo Luo, Xiao Yu Huang, Zhi Liang Huang
• Keywords: 3Y-ZrO₂, Carbon Nanotubes, Compression Moulding Forming, Gel-Casting, Toughening

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