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Ion implantation of stainless steel heater alloys for anti-fouling applications

Nejim, A, Jeynes, C, Zhao, Q and Muller-Steinhagen, H (1999) Ion implantation of stainless steel heater alloys for anti-fouling applications Proceedings of the International Conference on Ion Implantation Technology, 2. pp. 869-872.

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Ion implantation of fluorine and silicon ions into stainless steel heater alloys inhibits the accumulation of CaSO4 deposits when used in an saturated aqueous solution of 1.6 g/l concentration. This anti-fouling action leads to an increase in the heat transfer coefficient by more than 100% under a heat flux of 200 kW/m2 and 200% under a heat flux of 100 kW/m2 when compared to unimplanted heater elements. Heat transfer data indicate that following a heating cycle of 4000 minutes a thick layer of CaSO4 deposit remain on unimplanted heater surfaces. Similar CaSO4 deposits also formed on the implanted alloys initially but did not remain after 1000 minutes causing a significant recovery in the heat transfer coefficient. Ion implanting these alloys leads to surface energy reduction and hence the anti-fouling action observed.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
Nejim, A
Zhao, Q
Muller-Steinhagen, H
Date : 1 December 1999
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:53
Last Modified : 24 Jan 2020 23:02

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