What are the main types of new ceramics?

Toughness ceramics

Ordinary ceramic products often have a lot of fine cracks, when subjected to external forces, fine cracks will continue to expand, and converge into coarse cracks, and finally broken. For this disadvantage of ceramics, scientists have developed an effective way to prevent the expansion of fine cracks, made it difficult to break the "toughness" of ceramics.

Piezoelectric ceramics

Piezoelectric ceramics are ceramics with an energy conversion function, which cause the surface to become electrically charged when deformed under the action of mechanical forces.

The manufacture of piezoelectric ceramics has strict requirements for raw materials. It should be asymmetrically centered in the crystal structure. Sintering these materials at high temperatures and polarizing them under a high-voltage electric field results in a variety of piezoelectric ceramic products that have functions such as energy conversion, sensing, and actuation.

Biomedical engineering is an important field of piezoelectric ceramic applications. Can be used to detect the human body information and piezoelectric ultrasound therapy. Due to the body of various tissues of ultrasound have different reflection and transmission effect, piezoelectric ceramics issued by the acoustic wave transmission in the body, return to the piezoelectric ceramics received by the electrical signals displayed on the screen, according to which you can determine the situation of the visceral tissues. And into the human body ultrasound reaches a certain intensity, can make the tissue heat and slight vibration. This vibration can play a role in the treatment of some diseases.

In addition, the piezoelectric ceramic is very sensitive, can accurately measure the weak pressure changes, and can even detect more than ten meters away from the insect flapping wings caused by the air vibration, so people use it to create seismic measurement device is the best.

Low-temperature ceramics

Low-temperature ceramics is a kind of ceramic products made in the boiling state of liquid nitrogen. Cryoceramics are made this way: a salt solution is first sprayed into the boiling liquid nitrogen in tiny mist beads, which condense into tiny ice beads. It is then fed into a vacuum chamber, where the water is vaporized and the ceramic is formed.

Low-temperature ceramics have a wide range of applications in the development of modern technology. Used in computers, it can dramatically increase the speed of computing and make the picture clearer. With this ceramic made of VCR head used thousands of hours, almost no wear and tear, its life is five times that of the ordinary head, the clarity of the recorded film images can make people feel immersive.