Journal of Central South University of Technology

, Volume 16, Issue 6, pp 892–896 | Cite as

Flexural strength of zirconia/stainless steel functionally graded materials

  • Jun Li (李 军)
  • Kang Zhao (赵 康)Email author
  • Yu-fei Tang (汤玉斐)
  • Da-yu Li (李大玉)


Zirconia/stainless steel (ZrO2/SUS316L) functionally graded materials (FGMs) were fabricated by tape casting and laminating. Microstructures of FGMs were observed by optical microscope. Fracture behavior of FGMs in different loading modes and influences of different gradient changes on flexural strength were investigated. The results show that ZrO2/ SUS316L FGMs with graded components at interlayers are obtained after they are sintered in vacuum and pressureless condition at 1 350 °C. The I–II mixed mode crack creates in composite layer and grows to both sides zigzag while loading on ZrO2 layer. Flexural strengths are 496.4, 421.7 and 387.5 MPa when gradient changes are 10%, 15% and 20%, but flexural strengths of the corresponding fracture layers are 387.1, 334.6 and 282.3 MPa since cracks of FGMs are affected by three-dimensional stress, respectively. The cracks are generated in ZrO2 layer and extend to SUS316L layer while loading is added on SUS316L layer, flexural strength does not change with the graded components and keeps consistent basically.

Key words

ZrO2 functionally graded materials flexural strength fracture tape casting 


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Copyright information

© Central South University Press and Springer Berlin Heidelberg 2009

Authors and Affiliations

  • Jun Li (李 军)
    • 1
  • Kang Zhao (赵 康)
    • 1
    Email author
  • Yu-fei Tang (汤玉斐)
    • 1
  • Da-yu Li (李大玉)
    • 1
  1. 1.School of Materials and EngineeringXi’an University of TechnologyXi’anChina

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