Polycrystalline diamond powder is formed by explosion synthesis, leading to a polycrystalline particle structure without cleavage planes. The resulting high toughness of polycrystalline diamond tolerates three times higher operating pressures than monocrystalline diamond. Its micro-structured, rough particle surface provides numerous contact points between diamond particles and the work piece. These properties allow for significantly higher material removal rates compared to other diamond types. Typical applications of polycrystalline diamond powder are high-performance lapping and polishing processes.
Monocrystalline diamond powder is produced by HPHT (high-pressure, high-temperature) synthesis. The diamond particles feature an oriented crystal structure with parallel-running cleavage planes, similar to natural diamond. For diamond tools, particle fracturing provides a self-sharpening mechanism and thus increases tool life. Monocrystalline diamond powder is a popular choice for precision grinding, lapping and polishing of various materials.
Polycrystalline diamond powder is best suited for lapping and
polishing of both extremely hard and soft materials. Thanks
to its unique characteristics, maximum material removal
rates and superior surface quality are achieved.
Monocrystalline diamond powder is relatively inexpensive to
produce and therefore widely used for grinding, lapping and
polishing applications. Natural diamond powder is preferred
for the production of electroplated diamond tools.
Nanodiamond is a nanomaterial used in a variety of
applications and research projects.