Plasma-sprayed ceramic coatings are being developed for many applications such as
thermal barriers and corrosion protection. In plasma spraying, the ceramic powder is heated …

Thermal spraying of protective coatings has been in use since 1917 when the initial
application was the spraying of zinc layers onto steel structures to prevent corrosion [1]. In …

Porosity is an important factor in plasma-sprayed coatings, especially ceramic coatings.
Excessive poros-ity can adversely affect the performance of the coated component in …

Plasma-spray coatings are widely used in industry to protect the substrate against
aggressive environments or to alter the surface properties to enhance the wear resistance …

An ultrasonic, nondestructive contact measurement technique was employed to detect and
characterize the elastic anisotropy of a free-standing, plasma-sprayed alumina coating …

Plasma sprayed coatings are widely used to protect parts from aggressive environments. In
applications such as land-based gas turbines, Thermal barrier Coatings (TBCs) are utilized …

A simplified ultrasonic immersion technique has been developed to measure leaky surface
and bulk waves in solid materials by using specially designed lensless, line focus …

Ultrasonic methods are developed for characterizing plasma-sprayed coatings. First,
ultrasonic spectroscopy is used to determine the acoustic properties of various plasma …

Atmospheric plasma spraying (APS) is an effective process to make ceramic coatings as
thermal, wear or corrosion barrier on the substrate materials. Because of the brittle nature of …

In this study, a new laser based technique was evaluated for the characterization of plasma-
sprayed oxide coatings. It uses the contactless laser generation and detection of ultrasonic …