Patent ID: 8642140

Claim:
A method for applying a material to a part, the method comprising: placing the part in a deposition chamber; applying a first electric potential to the part; evaporating components for forming the material; ionizing the evaporated components; and modulating the first electric potential so as to draw the ionized components to the part, wherein the modulating comprises: a plurality of first steps for PA-PVD, each comprising a series of pulses of negative potential; and a plurality of second steps for PVD alternating with the first steps, wherein: a pulse width τ i is <10 −3 s; a duty cycle D of the pulses is 0.1<D<0.99; a pause between the pulses τ p >0.5×10 −6 s; a duration T 1 of each first step is 10<T 1 <1000 s; and a duration T 2 of each second step is 10<T 2 <1000 s.