Tantalum carbide, TaC sputtering targets
Tantalum carbide, TaC, CAS ID：12070-06-3
Size: max. 355.6mm (14 inch) , Length: 250mm x Width 200mm x
thickness 20mm max., Shape: Discs, disks, rod, step disk, delta,
plate, sheets or made per drawing
Packing vacuum packing.
Tantalum carbides are extremely hard, brittle, refractory ceramic
materials with metallic electrical conductivity. Molecular Weight:
192.956, density: 14.3g/cm3, (13.9g/cm3), melting point: 3880°C,
They appear as brown-gray odorless or dark to light brown powders
which are usually processed by sintering. Being important cermet
materials, tantalum carbides are commercially used in tool bits for
cutting applications and are sometimes added to tungsten carbide
alloys. The melting points of tantalum carbides peak at about 3880
°C depending on the purity and measurement conditions; this value
is among the highest for binary compounds. Only tantalum hafnium
carbide has a distinctly higher melting point of about 4215 °C,
whereas the melting point of hafnium carbide is comparable to that
Applications: For tantalum metal billets and powder, tantalum
carbide, ceramic capacitors and additive in special optical glass.
Tantalum carbide is often added to tungsten carbide/cobalt (WC/Co)
powder attritions to enhance the physical properties of the
sintered structure. It also acts as a grain growth inhibitors
preventing the formation of large grains, thus producing a
materials of optimal hardness.
It is also used as a coating for steel moulds in the injection
moldings of aluminum alloys. While providing a hard, wear resistant
surface, it also provides a low friction mould surface. Tantalum
carbide is also used in the production of sharp instruments with
extreme mechanical resistance and hardness. It is also used in tool
bits for cutting tools.