Meaning
Composite ceramic films containing titanium, aluminum, and nitrogen provide extreme thermal stability and wear resistance to industrial tooling. Applying a tialn coating to electrode slitting blades prevents premature edge rounding and chemical corrosion from electrolyte vapors. This protective film is typically applied using physical vapor deposition processes.
Material Structure
The atomic structure of this ceramic material forms a protective aluminum oxide surface layer when exposed to high temperatures during operation. This tialn coating maintains its high hardness of up to thirty gigapascals even at temperatures exceeding eight hundred degrees Celsius. This oxidation resistance is superior to that of standard titanium nitride coatings, making it suitable for high-speed machining.
The coating also exhibits low thermal conductivity, which directs heat away from the delicate cutting tool substrate and into the discarded metal chips.
Machining Application
Electrode slitting knives operate under continuous abrasive wear from hard active materials like nickel and cobalt oxides. Implementing a tialn coating on these rotary knives increases their operational life by reducing the rate of edge degradation. This coating also reduces the tendency of the soft aluminum and copper current collectors to adhere to the blade surface.
Production Efficiency
Extending the blade lifetime reduces the frequency of line shutdowns required for blade replacement and calibration. Minimizing the wear on the blade by using a tialn coating ensures a clean edge cut that prevents microscopic short circuits in the assembled cells. This consistent cutting quality reduces scrap rates and helps maintain a continuous, uninterrupted production flow.
