Diamond mechanical properties

Diamond is by far the planet's most hard material, since the diamond in the C-C bond is very strong, so the diamond hardness, on the Mohs hardness scale, with 10 kinds of minerals as a benchmark to determine 1-10 of hardness value, Diamond Mohs hardness of 10, as shown in the table. Just because the diamond hardness, so can be used to make a glass knife. Diamond hardness is anisotropic, the different crystal surfaces and different directions on different hardness. Diamond hardness to{100} ＜ {110}＜{111}the order changes. Is in a{111}plane is also due to the different direction and with anisotropy.

A diamond with several hard material comparison:

Diamond chemical properties:

The Diamond's chemical composition is carbon, the impurities are mainly graphite, nitrogen, boron, silicon and other non-metallic elements, and the catalyst elements such as iron, cobalt, Nickel, manganese and the like. Diamond because it is strong covalent bonds, and carbon atoms of the characteristic, thus at room temperature the chemical properties is very stable, resistant to acid and alkali and other chemicals corrosion. So you can take full advantage of this nature to carry out synthetic diamond purification. You can also use a strong acid corrosion encrusted with diamond of old drill bits, old tools, the diamond from the carcass off to be recovered without compromising the diamond quality.

Diamond electrical properties

Pure impurity-free Diamond is an insulator, room temperature resistivity in the 1016Ώ·cm or more, only the incorporation of a small amount of boron or phosphorus impurities, only showed semiconductor characteristics. A dielectric constant of 5. 6, The Diamond band gap 5. 5eV,in the ultraviolet irradiation under the light conductivity. The composition of the diamond crystals of the C elements with other semiconductor materials Si And Ge belong to the same periodic table groupⅳ, which are based on the same valence electrons to work to see the combination of the constituting crystals. With Si, Ge, as, the diamond has excellent semiconductor properties.

Diamond optical properties

Faux Diamond due to the synthesis process of the catalyst component and the generation temperature, pressure, inclusions and other factors, while there are yellow, yellow-green, green, dark gray, black and other colors, many translucent to transparent. Generally in light color, high transparency of good quality. Diamond has a very high fold color ratio, a refractive index of 2. 40-2. 48 In. For a wavelength of 589. 3nm light, the off-color rate of 2. 417 it. Diamond has a strong astigmatism, the chromatic dispersion coefficient of 0. 063 in. This is as a gem Diamond glittering lights of the main reasons. Diamond crystals in the different ray irradiation can be issued under various colors of light.

Different rays of diamond light performance