Pinkerton, A. J. and Li, L. (2003) Process characteristics and effects of gas- and water-atomized stainless steel powders in laser-based rapid tooling. Journal of Laser Applications, 15 (3). pp. 172-178. ISSN 1042-346XFull text not available from this repository.
In rapid tooling using the direct laser deposition process and stainless steel materials, only powders prepared using the gas-atomization method have been used because of their presumed superior flow characteristics. In this article, the use of water-atomized powder is investigated by comparing the behavior of the two types of 316 L powders, deposited using a CO2 laser and coaxial head. Results show little difference in the pneumatic conveyance of the powders, but considerably greater absorption of laser energy by the water-atomized powder between the nozzle and material deposition point. Walls produced using the water-atomized powder exhibited a more textured microstructure and smoother sidewall surfaces, with less surface metallic oxides, but the deposition rate was considerably lower than when using gas-atomized powder. (C) 2003 Laser Institute of America.
|Journal or Publication Title:||Journal of Laser Applications|
|Subjects:||?? ta ??|
|Departments:||Faculty of Science and Technology > Engineering|
|Deposited On:||21 Nov 2012 09:16|
|Last Modified:||25 Mar 2017 03:25|
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