کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
736104 | 893714 | 2011 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis of nanoporous structures in metallic materials under laser action Synthesis of nanoporous structures in metallic materials under laser action](/preview/png/736104.png)
We defined conditions of the laser-aided formation of nanoporous structures with nanopores ranging in size from 40 to 50 nm using laser pulses of 10.6 μm wavelength at a pulse-repetition rate of up to (4–5)×103 Hz for a model metallic material (a two-component alloy “brass of 62%”). It has been established that the exposure to a uniform laser light at depths of up to 25–30 μm results in the formation of nanopores with a relatively uniform distribution across the surface. The resulting pattern contains both solitary pores and ramified porous channels. The nanopores are uniformly distributed within a subgrain, being fairly stable in size and shape. The nanopore size and shape feature larger non-uniformity on the subgrain boundary. The resulting metallic structures show promise for use as catalysts and ultrafiltration membranes.
► We defined conditions of the laser-aided formation of nanoporous structures.
► We used laser pulses of 10.6 μm at a pulse-repetition rate of up to (4-5) 103 Hz.
► In alloy “brass of 62%” nanopores ranging in size from 40–50 nm are formed.
► The resulting structures contain both solitary pores and ramified porous channels.
► Such structures show promise for use as catalysts and ultrafiltration membranes.
Journal: Optics and Lasers in Engineering - Volume 49, Issue 11, November 2011, Pages 1264–1267