Neoceram is obtained by reheating glass having a specific composition to precipitate a fine crystal structrue. In the crystalline phase the material has a very low, or even negative, thermal expansion coefficient, and the glass and crystal matrices therefore cancel each other out, producing the low expansion properties of Neoceram N-0 and Neoceram N-11.

• Manufacturing Process of Neoceram
  
  

• Neoceram N-0
  Beta quartz type crystals precipitated by the A crystallization heat treatment are no large than 0.1 microns, which is sufficiently smaller than the wavelength of visible light. Also, because the refractivity of the crystals is about the same as that of the glass matrix, the light does not become diffused, whith is what gives Neoceram N-0 its transparency.
  

• Neoceram N-11
  Beta spodumene crystals precipitated by the B crystallization heat treatment are about 1 micron in size. Because that is larger than the wavelength of visible light, the effect is to diffuse the light, giving Neoceram N-11 its white, opaque appearance. However, Neoceram N-11 offers good transmissivity to far-infrared light with a wavelength of about 3.5 microns.
  

Top of This Page