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TECH SPACE
3D-Printed Ceramics Could be Used in Future Space Flights
by Staff Writers
Malibu CA (Sputnik) Jan 07, 2016


File image.

Researchers have used a 3D printer to create customized ceramic parts that are strong, lightweight and handle heat better than many metals, but that do not crack easily like some traditional ceramics. The development could open the door to a new class of ceramic-body or ceramic-engine jets, said Tobias Schaedler, senior scientist at HRL Laboratories in Malibu, California.

"If you go very fast, about 10 times speed of sound within the atmosphere, then any vehicle will heat up tremendously because of air friction," Schaedler told space.com. "People want to build hypersonic vehicles and you need ceramics for the whole shell of the vehicle."

The team created a resin formulation that can be 3-D printed into parts of virtually any shape and size. That part is then fired in a high-temperature kiln overnight, resulting in a fully-dense ceramic that is 10 times stronger than similar materials and can withstand temperatures in excess of 3,092 Fahrenheit (1,700 degrees Celsius).

The method could help rocket and satellite designers who have to make lots of special small parts that are capable of resisting the heating that occurs during high velocity air friction, as well as high temperatures generated by the exhaust during takeoff, space.com reported.

A form of ceramic called alumina is being used in new ion propulsion drive, which uses electricity to heat gas and generate ions, according to Charlie Spahr, executive director of the American Ceramics Council.

"Ceramics are really good where you want to reduce wear and tear," Spahr said.

The Pentagon's research branch has been funding various projects to discover new ways to build lighter, stronger and more heat-resistant materials for aerospace and military applications.

"The new method brings us closer to the goal of being able to 'engineer in' desired material properties that generally are not found together, such as strength and low density or low weight, and to craft these materials into complex shapes," said Stefanie Tompkins, of the Defense Advanced Research Projects Agency.

Source: Sputnik News

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Previous Report
TECH SPACE
New technique offers strong, flawless 3-D printed ceramics
Washington DC (SPX) Jan 04, 2016
Researchers have developed a way to create ceramics using 3D printing that results in a strong material with little tendency to crack that can be fabricated into complex, curved and porous shapes. Ceramic materials offer many appealing qualities, including high-temperature stability, environmental resistance, and high strength. But unlike polymers and some metals, ceramic particles don't f ... read more


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