Acoustic emission is observed from flame-and plasma-sprayed Ni Al, Al 2 O 3 TiO 2 and
Al 2 O 3 coatings exposed to water immediately after spraying. The greatest activity is …

Measurements were made of the attenuation in thin samples of plasma-sprayed
molybdenum, nickel aluminide and aluminium in the frequency range 2.5–15 MHz. It was …

Acoustic emission methodology was used to study a variety of plasma-sprayed oxide
coatings subjected to thermal cycling in the range 25 to 650 C. Coatings of Al2O3, TiO2 …

Acoustic emission (AE) has been used to assess the integrity of ceramic coatings. The early
studies enabled cracking mechanisms to be qualitatively assessed so that comparative …

A study was made of the amplitude distributions of acoustic emission (AE) from several kinds
of plasma-sprayed coatings during four-point bending. A method is described whereby the …

Many metallurgical coatings applied by thermal spraying tend to exfoliate or spall through
the growth of cracks, presumably initiated at the metal-coating interface or at the substrate …

There is still much discussion in the literature concerning the adhesion mechanisms of
thermally sprayed ceramic coatings to the substrate and their failure mechanisms. A need …

The thermal cycling behavior of plasma-sprayed ZrO 2− 12wt.% Y 2 O 3 coatings was
studied. Coatings were produced with and without bond coats of Ni-Cr-Al-Zr and in some …

Plasma-sprayed coatings have a microstructure built up from the overlaying of many
semimoIten particles which splat against a substrate. The structure of plasma-sprayed …

Plasma sprayed coatings have a complex structure which is produced by the overlaying of
many molten or semi-molten particles in the diameter range of 20 to 120 µm. There is a need …