Development of anti-permeation and corrosion barrier coatings for the WCLL breeding blanket of the European DEMO

被引：25

作者：

Utili, Marco ^{[1
]}

Bassini, Serena ^{[1
]}

Cataldo, Sebastiano ^{[1
]}

Di Fonzo, Fabio ^{[2
]}

Kordac, Michal ^{[3
]}

Hernandez, Teresa ^{[4
]}

Kunzova, Klara ^{[3
]}

Lorenz, Julia ^{[5
]}

Martelli, Daniele ^{[1
]}

Padino, Boris ^{[2
]}

Morono, Alejandro ^{[4
]}

Tarantino, Mariano ^{[1
]}

Schroer, Carsten ^{[5
]}

Spagnuolo, Gandolfo Alessandro ^{[6
]}

Vala, Ladislav ^{[3
]}

Vanazzi, Matteo ^{[2
]}

Venturini, Alessandro ^{[1
]}

机构：

[1] ENEA Brasimone, I-40032 Bologna, Italy

[2] Ctr Nanosci & Technol, Nano2Energy Lab, IIT, Via G Pascoli 70-3, I-20133 Milan, IT, Italy

[3] Ctr Vyzkumu Rez CVR, Hlavni 130, Rez 25068, Czech Republic

[4] Fus Technol Div, CIEMAT, Avda Complutense 40, Madrid 28040, Spain

[5] Karlsruhe Inst Technol, KIT, Karlsruhe, Germany

[6] EUROfus Consortium, Programme Management Unit, Garching, Germany

来源：

FUSION ENGINEERING AND DESIGN | 2021年 / 170卷

关键词：

DEMO; Alumina coating; PbLi; Tritium permeation; Corrosion; Irradiation;

D O I：

10.1016/j.fusengdes.2021.112453

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Tritium permeation from breeder material to the Water Coolant System (WCS) in Water Cooled Lithium Lead (WCLL) Breeding Blanket (BB) is one of the technological issues to be solved in the design of the European DEMO. Since the tritium extraction from the Water Coolant System is more challenging and expensive than the extraction from the eutectic alloy PbLi, it is mandatory to use of a protective coating on the blanket wall to minimize the permeation rate. Moreover, a protective coating can prevent the corrosion of EUROFER steel by the action of PbLi. alumina-based coatings are considered as reference for barriers thanks to their good chemical compatibility with the PbLi alloy and their capability to reduce permeation. Three coating technologies were selected in the frame of the EUROfusion project: electrochemical ECX (chemical deposition) process, Pulsed Laser Deposition (PLD) and Atomic Layer Deposition (ALD) coating. The coatings were developed and optimized in order to satisfy the design requirements of good mechanical compatibility with steels, strong adhesion, corrosion compatibility in PbLi at relevant BB design conditions and a Permeation Reduction Factor at least of 200 under neutron irradiation. The present paper aims to describe the status of the technologies and the main results obtained. The final objectives of the R&D activities are to demonstrate the applicability of the coating to WCLL BB and therefore the scale-up of the technologies from laboratory scale to the BB scale.

引用

页数：11

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