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|Title: ||Reduction of interconnected porosity in zirconia-based thermal barrier coating|
|Authors: ||RAJENDRAN, R|
thermal barrier coating
|Issue Date: ||1995|
|Publisher: ||ELSEVIER SCIENCE SA LAUSANNE|
|Citation: ||SURFACE & COATINGS TECHNOLOGY,73(3)198-200|
|Abstract: ||Chemical vapour deposition of zirconia was carried out on yttria-stabilized zirconia based thermal barrier coating to close down the surface pores. Scanning electron micrographs of the surface and the cross-section indicate that the surface cracks and pores could be closed and that the deposited layer penetrates the plasma-sprayed yttria-stabilized zirconia layer. The interconnected porosity, determined by the measurement of diffusion current density in 5% NaCl solution, was found to be reduced to about 98% even by a 10 mu m thick overlayer.|
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