Scratch adhesion testing of plasma-sprayed yttria-stabilized zirconia coatings

• The suitability of scratch adhesion testing, usually used for determining the critical load for thin hard coatings like TiC and TiN, in characterizing plasma-sprayed yttria-stabilized zirconia coatings is demonstrated. The effects of loading rate and scratching speed on the critical load of these sprayed coatings were studied. Although some peculiarities in acoustic signal-load plot were observed at high values of loading rate and scratching speed, it was found that these intrinsic parameters, at low and medium values, do not have any prominent effect on the critical load. © 1991.

Nyckelord

Materials Testing

Zirconia

Critical Load

Intrinsic Parameters

Loading Rate

Plasma Sprayed Coatings

Scratch Adhesion Testing

Yttria Stabilized Zirconia

Protective Coatings

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