Paper Title:
Fabrication of Al2O3-ZrO2~Ni Functionally Graded Pipes
  Abstract

The fabrication of Al2O3-ZrO2~Ni functionally graded pipes has been investigated by slurry coating and pressureless sintering process. Each slurry of Al2O3-ZrO2~Ni mixture and Ni was coated in order on the Al2O3-ZrO2 pipes formed by slip casting method with those slurries. The obtained laminar green pipes were 30 mm in diameter and approximately 90 mm in length. The laminar green pipes were sintered for 2 hours at 1430°C in a vacuum. The structure of pipes fabricated by this method was optically and microscopically examined and the graded distribution was examined by an EPMA analysis of Al and Ni. The pipes with 2 layers of Al2O3-ZrO2 and Ni had crevices in the bonding interface. Some functionally graded pipes with 3 layers were free from cracks and warps without porosity, and each interface had the complete bonding.

  Info
Periodical
Materials Science Forum (Volumes 492-493)
Edited by
Omer Van der Biest, Michael Gasik, Jozef Vleugels
Pages
69-76
DOI
10.4028/www.scientific.net/MSF.492-493.69
Citation
H. Kobayashi, "Fabrication of Al2O3-ZrO2~Ni Functionally Graded Pipes", Materials Science Forum, Vols. 492-493, pp. 69-76, 2005
Online since
August 2005
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Price
$32.00
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