Microstructure change and deuterium permeation behavior of the yttrium oxide coating prepared by MOCVD

Effect of Cr2O3 layer on the deuterium permeation properties of Y2O3/Cr2O3 composite coating prepared by MOCVD

“…According to our previous research, Cr 2 O 3 coating exhibited lower deuterium permeation resistance performance than Y 2 O 3 coating [17,29]. As for Y 2 O 3 /Cr 2 O 3 composite coating, the deuterium permeability depends on the thickness of Cr 2 O 3 layer.…”

Mechanism and Evaluation of Hydrogen Permeation Barriers: A Critical Review

“…62 However, arguments remain that the microstructure rather than the particle size itself plays a more important role. Within the study on the relationship between deuterium permeation and the microstructure of yttrium oxide coating, Wu et al 103 revealed that the permeation property of the coating is highly dependent on the microstructure. They claimed that the permeation does not depend so much on the grain size but rather on the pinholes and some cracks present on the surface of the coating.…”

One-step preparation of α-Al2O3/SiO2 composite tritium permeation barrier via slurry spin coating method and performance investigation

“…Ceramic oxide TPBs possessing excellent corrosion and excellent tritium resistance, have received great attention in recent years [7][8][9]. The ceramic oxide TPBs mainly include Cr 2 O 3 , Al 2 O 3 , Y 2 O 3 , Er 2 O 3 , TiO 2 , ZrO 2 , and SiO 2 and their composite coatings [1,2,7,[10][11][12][13][14][15][16][17]. Many countries have chosen the Al 2 O 3 coating as one of the most promising candidates because of its high hydrogen isotope permeation reduction factor (PRF), strong compatibility, high temperature tolerance, and self-repair potential [18,19].…”