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Preparation of Al2O3 Coatings as Tritium-Resistance Coating by Ion Implantation on 316L Stainless Steel
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1.University of South China, Hengyang 421001, China;2.Southwestern Institute of Physics, Chengdu 610041, China

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Fund Project:

National Key Research and Development Program of China (2018YFE0313100); Scientific Research Project of Hunan Provincial Department of Education (18A249)

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    Abstract:

    The alumina coatings as a tritium-resistance coating were deposited on 316L stainless steel by ion implantation. The effects of different parameters of ion implantation process on the wear resistance, corrosion resistance, thermal shock resistance, and tritium permeation resistance of α-Al2O3 were investigated. Results show that the content of α-Al2O3 is affected by temperature, acceleration voltage, and ion implantation dose. With increasing the temperature, the content of α-Al2O3 is increased. With increasing the acceleration voltage or ion implantation dose, the content of α-Al2O3 is firstly increased and then decreased. The wear resistance and corrosion resistance are mainly affected by the ion implantation dose: with increasing the ion implantation dose, the wear and corrosion resistance becomes better. The Al2O3 coatings hardly changes after 200 times of thermal shock tests, indicating a good thermal shock resistance. The tritium permeability of the coated specimen is reduced by 3 orders of magnitude, compared with that of the 316L stainless steel bulk.

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[Feng Jun, Li Biwen, Chen Wenbo, Chen Meiyan, Dan Min. Preparation of Al2O3 Coatings as Tritium-Resistance Coating by Ion Implantation on 316L Stainless Steel[J]. Rare Metal Materials and Engineering,2021,50(11):3896~3900.]
DOI:10.12442/j. issn.1002-185X.20200639

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History
  • Received:August 25,2020
  • Revised:October 13,2020
  • Adopted:October 15,2020
  • Online: November 25,2021
  • Published: November 24,2021