95 superhard materials in the field of polycrystalline diamond prospects

Polycrystalline diamond (collectively, polycrystalline diamond), is composed of many high-quality diamond powder at elevated temperature and pressure with (or without) the additive sintering conditions.
Synthetic polycrystalline diamond has the following characteristics because of its vitality shows: (1) crystal was disordered arrangement, and thus uniform hardness, non-directional; (2) has a high strength, especially impact strength and wear sex; (3) can be made into a specific shape; (4) can predict product design or performance characteristics necessary to give the product in order to adapt it for specific purposes.
Once you can replace other industrial diamond products, then you can get a huge market efficiency, which is a new development area of ??polycrystalline diamond. Previously, in oil well drilling, only two percent is the application of the cutting blade, tungsten carbide tips and the rest are occupied cone bit.
Now, the machinery industry, the tool commonly used material is high-speed steel, carbide, ceramics. These tools are made of a material difficult to effectively cutting hard, wear-resistant material difficult to machine.
Practice has proved that high cutting efficiency machining difficult materials ideal diamond tool should have as high hardness and wear resistance, CBN or ceramic as good thermal stability and chemical inertness, carbide as high strength and impact resistance, but even in the future can not find a material having all these desirable properties. Seen in this light, the development of a better tool materials the most promising approach is the combination of several known tool material to form a complex superhard material, so that it has a variety of excellent performance. U.S. GECo scientists back in the early 70s began to explore and research this composite material, they successfully developed PDC (Compax) and cubic boron nitride composite sheet (Compact), these two materials in the machining tool applications will be substantial growth, its fastest growing.
Drawing dies - drawing non-ferrous metals such as copper, zinc, nickel copper, aluminum, gold, etc., as well as hard-wire such as tungsten, molybdenum is better, especially drawing copper wire better. A drawing die before grinding can be drawn in 7000 t copper, equivalent carbide die 300 to 1,000 times, or natural diamond die 5 to 10 times.
Currently polycrystalline diamond drawing dies can be brushed diameter range of 8 to 0.1um. Because precision drilling technology can control a variety of profiled wires. As fine and ultrafine grain products emerge, polycrystalline can be used for drawing dies, but also for the finished mold.
Petroleum Geology Drilling - began in 1973, has had three series of polycrystalline diamond petroleum and geological drill mass production and application. GECo that: special geological drilling polycrystalline diamond - Geoset is synthetic diamond drilling applications in major developments.
Twist drill - the 1980s, the use of diamond drill holes on the extension to the general. One is the twist drill, drill blade inlaid with roof or gable-shaped sandwich formed PDC used in stone, concrete and other non-metallic materials, non-ferrous metals or alloys punch, is gaining popularity in the electronics industry.
Polycrystalline diamond mention the technical development of performance under the following aspects:
(1) the appearance of large polymer chips;
(2) Thermal Stability Product claim series;
(3) continue to refine the grain;
(4) the shape of structural diversification.