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Final Defence for Mr. Aaron Turner

Author: Sylvia Demerson

Posted on Sep 30, 2019

Category: News and Notices

Mr. Aaron Turner will present his final defence for the MScE degree on Monday, Oct. 21 at 1 p.m. in the ADI Studio of Head Hall. His thesis title is "The Dissolution Rate Constant of Magnetite in Water at 140 °C and A pH25°C of 9.2.”

Abstract

Corrosion of carbon steel components is a major problem in the power generation industry and has been proved to be reliant on the protective magnetite oxide layer. Predicting the corrosion rates and material transport with the use of developed models has indicated the importance of a reliable value for the dissolution rate of magnetite at various chemistry conditions. In this study an impinging jet test section was placed in a high-pressure recirculating water loop to measure the dissolution of sintered magnetite pellets made from synthesized magnetite powder. The dissolution experiments were conducted under typical power plant feedwater conditions in ammoniated water at pH25◦C 9.2. The addition of film-forming amines to the coolant was also studied to determine their effect on the dissolution rate of magnetite. The findings in this study can be used to understand and reduce the dissolution and removal of the protective magnetite oxide layer, which will reduce flow-accelerated corrosion rates, fouling of heat transfer surfaces due to material transport and the level of radioactivity in nuclear power plants due to the deposition of radioactive corrosion products outside of the core.

Examining Board:

Dr. Y. Ni, Chair

Dr. D. Lister, Supervisor

Dr. H. Xiao

Dr. G. Saha, Mechanical Eng.

 All Are Welcome To Attend

Category: News and Notices

Article Contact Information

Contact: Sylvia Demerson

Email Address: sdemerso@unb.ca