The Plasma Spray – Physical Vapor Deposition (PS-PVD) rig at
NASA's Glenn Research Center uses new technology to create super
thin ceramic coatings. Here, Bryan Harder, the lead for the PS-
PVD, installs a sample in the rig. Image Credit: NASA Turbines,
or rotary engines that create power, have a multitude of uses.
They are used in machines that perform work on Earth and are
essential components of airplanes. Currently, most turbines are
built using metallic based components, and these metal
components require cooling to avoid reaching their thermal
limits. New, more efficient engine technology requires
components that can survive higher temperatures and reduced
cooling. Silicon based ceramic components show great potential
for use in advanced, higher efficiency engines, as they are
capable of withstanding higher temperatures and weigh less than
metal components. However, when unprotected, these silicon based
ceramic components react and erode in turbine engine
environments due to the presence of water vapor.