Impedance of Asymmetrically-Fed Trailing-Wire Antennas

A study on the wire drawing of TiNi shape memory alloys

“…Some studies have reported that the surface oxide film can be used as a lubricant during the TiNi wire drawing process [6][7][8]. In order to further understand the effects of oxide film on TiNi wire drawing, surfacecleaned and annealed TisoNiso wires were heated in normal atmosphere at 550 °C for different time periods to obtain different thickness of surface oxide film.…”

“…These properties along with their superior ductility, strength, fatigue and corrosion resistance, have resulted in many applications, among which use in the manufacture of wire forms figures prominently. In wire applications, TiNi SMAs are usually produced as wire springs, hollow wires and various nonregular shapes [6][7][8][9]. Recently, ultra-fine or hollow TiNi wires have been developed and have shown improved SME which is promoted by their higher cooling rates during the cooling process.…”