Termomechanical processing of titanium alloys by high power pulsed ion beams

The regularities of solid surface erosion and coating deposition using high-power pulsed beams of charged particles

“…The productivity of a pulse coating-deposition technology is characterized not only by its rate Z dep but also by the pulse repetition rate m. The deposition experiments with metal coatings show that, when the accelerator operates in the frequency-pulse regime, the thickness of the coatings is directly proportional to Z dep and m [16,17]. Consequently, the average deposition rate f dep , which characterizes the technological process productivity, is equal to…”

High-energy density beams and plasmas for micro- and nano-texturing of surfaces by rapid melting and solidification

“…The short range (0.1-10 µm) and high-energy density (1-50 J cm −2 ) of these short-pulsed (<1 µs) beams with ion currents (5-50 kA), and energies (100-1000 keV) make them an ideal RTP source that induces rapid melt and solidification at up to 10 10 K s −1 , causing amorphous layer formation and the production of nonequilibrium microstructures. Several research groups have used IPIBs for material modification [88][89][90][91][92][93] for different applications. Renk et al [94] reviewed material modification using intense beams and have shown that RTP with ion beams is quite promising for large scale commercial use due to the high specific ion energy deposition (J cm −3 ) without reflection, and to the relative efficiency and low cost of the pulsed power ion-beam drivers compared with other high-kinetic energy alternatives.…”

Study of craters formed on surface of AISI 321 stainless steel after high power ion-beam exposure

“…Although processing with a high-power ion beam (HPIB) increases the hardness, wear resistance, corrosion resistance, and fatigue life of materials [1][2][3], many studies have demonstrated that this type of exposure leads to the formation of unique surface defects, such as craters. This is detrimental because pores, holes, or microcracks can form in the center of the crater, which in turn can function as stress concentrators and are potential sources of corrosion and locations for fatigue crack formation [4].…”