Titanium Diboride Coating (TiB₂) in Non-Ferrous Metal Processing

Advantages of Titanium Diboride Coating #

Titanium Boride (TiB₂) is a superhard ceramic material with very high hardness (~3400 HV), excellent wear resistance, high temperature resistance (melting point >3000°C), and good chemical compatibility with non-ferrous metals, making it an ideal high-performance coating choice for machining of Aluminium, Copper and Magnesium. The following are its core applications and advantages:

Non-ferrous metals and high temperature precision machining #

• Effective resistance to adhesive wear on non-ferrous metals such as aluminium/copper alloys, extending Cutters’ life;
• Low coefficient of friction: reduces cutting heat and avoids workpiece material adhesion (e.g. aluminium alloy ‘sticky tool’ problem);
• High-temperature stability: maintain performance above 1000℃, suitable for high-speed dry cutting;
• Typical applications: Applicable scenarios: aluminium alloy wheel hub milling, copper electrode precision turning, and so on.

ine environments;

Die casting and extrusion mould strengthening #

TiB₂ coating can significantly improve the durability of moulds in harsh environments:

• Resistance to molten metal corrosion: Inertness to react with molten aluminium and magnesium, preventing erosion of the die surface.
• Resistance to thermal fatigue: reduces the risk of cracking due to high temperature cycling and extends the life of the mould by 2 to 3 times.
• Easy mould release: Reduce the use of mould release agents and improve the surface quality of castings.
• Typical applications: Aluminium alloy engine block die casting moulds, copper tube extrusion moulds.

For high wear parts in non-ferrous metal processing: #

• Extreme wear resistance: TiB₂ is more than 5 times harder than conventional hard chrome coatings.
• Anti-chip build-up: Smooth surfaces reduce the build-up of machining chips and ensure equipment stability.
• Typical applications: guide rollers, feed mechanisms

Conductive applications: #

TiB₂ (Titanium Diboride) has better conductivity than TiN (Titanium Nitride). The following is a comparison and analysis of the specific conductive properties of the two:

• TiB₂ has better electrical conductivity than TiN – TiB₂: resistivity is about 10-6 to 10-5 Ω⋅cm, TiN: resistivity is about 2×10-5 to 3×10-5 Ω⋅cm. -5 Ω⋅cm;
• Difference in conductive mechanism – TiB₂: has a graphite-like layered structure, with layers of boron atoms alternating with layers of titanium atoms, which makes it easier for electrons to migrate between the layers, forming a good conductive channel.
• TiN: Although it has a mixture of metal bonding and covalent bonding characteristics, the bonding method of nitride is a relatively large obstacle to electron migration, resulting in its conductivity is not as good as TiB₂;
• In the electrolyte, TiB₂ has better stability in certain acid and alkaline environments;