Team develops malleable and crack resistant ceramic
The ceramics can be incredibly durable, excellent thermal insulators, can be used as insulators or electrical conductors and have high chemical resistance. But while they are super-versatile, one thing we don't usually associate with them is malleability. However, a team of researchers from Purdue University, USA, has developed a process that can make this material more flexible and durable.
The researchers created a method called “flash sintering, ” which involves applying an electric current during the ceramic manufacturing process. In the first tests last year, scientists were able to produce samples of this material as malleable as some metals, but observed the emergence of some cracks after testing the ceramics.
Now, after refining the sintering method they devised, the researchers were able to produce ceramic blocks capable of undergoing deformations that ceramics made by means of tractional processes could never withstand. Moreover, in tests on titania - a ceramic titanium dioxide material - scientists obtained a sample that, during the experiments, could withstand similar compressive stresses to those of certain metals without cracking or cracking.
Thus, the method developed by the team, by giving greater plasticity and durability to ceramics, can allow these materials to become more resistant to heat or stress caused by high loads and thus can be used in the most varied and most varied forms. different industries.
Researchers continue to work to improve the process, but explained that malleable ceramics can have important technological applications, such as creating components for nuclear reactors, building sustainable power generation devices, creating parts for missiles and other weapons, in the production of electronics and optical parts, and in the manufacture of automobiles, for example.
Developed a malleable and crack resistant ceramic via TecMundo