Diamond outstanding performance

Diamond is the hardest known material in the material, its absolute hardness value of SiC from 3-4 times, which is about six times the carbide. The elastic modulus of about diamond 9 × 105 MPa, SiC is 2.7 times 1.5 times the WC; tensile strength of 306-408kg 〃 mm -2, 6-8 times for the carbon steel; wearAbrasive grinding wheel the hard alloy high quality 50-200 times higher than the SiC high 300-3500 times higher than the hardened tool steel 2000-5000 times, with its synthetic diamond drill bits, carbide drill more than 10 times longer. The friction coefficient of diamond in air is 0.1, in vacuum only 0.005; heat quickly, can be used as a special high-speed rotation aerospace bearings. Diamond thermal conductivity at room temperature, the highest known materials (about 2200 Wm-1K-1), is therefore a good cooling thermal management materials.
At room temperature, regardless of natural or synthetic diamond diamond has a very stable chemical properties, almost no contact with acid, alkali and other corrosive media react, and thus can be used as anti-corrosionabrasive grinding. Diamond As low density and sound velocity in a large, but also as a high-fidelity speaker tweeter diaphragm. Diamond com high transmittance, high-power infrared lasers and detectors ideal window material. In addition, diamond anti-radiation ability, at high radiation stability in harsh environments. A high band gap, low dielectric constant, high carrier mobility, a large breakdown voltage, these properties so that it is widely used in the field of semiconductor devices.
Diamond its superior hardness, wear resistance, acid and alkali resistance, high thermal conductivity, outstanding radiation resistance and other properties, in stone, buildings, roads, railways, geology, petroleum, airports, machinery, energy, aerospace, electricity, ceramics, electronics, optics and other fields are widely used, and the traditional carbide, silicon carbide, etc. constantly replaced.