Location

Brunswick, ME

Start Date

1-1-1997 12:00 AM

Description

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 into semi-molten droplets for projection onto a target surface by a high velocity gas stream. This coating is then rapidly cooled to form a solid layer. By repeating this process for multiple layers, a coating thickness from micrometers to millimeters may be built up. Inherent to this process, plasma-sprayed coatings generally possess rough surfaces and a high degree of porosity.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

16B

Chapter

Chapter 6: Material Properties

Section

UT Backscatter/Microstructure

Pages

1563-1570

DOI

10.1007/978-1-4615-5947-4_203

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Ultrasonic Evaluation of Rough and Porous Ceramic Coatings with a Dual-Element Large Aperture Lensless Line-Focus Transducer

Brunswick, ME

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 into semi-molten droplets for projection onto a target surface by a high velocity gas stream. This coating is then rapidly cooled to form a solid layer. By repeating this process for multiple layers, a coating thickness from micrometers to millimeters may be built up. Inherent to this process, plasma-sprayed coatings generally possess rough surfaces and a high degree of porosity.