CeO2-filled sol–gel coatings for corrosion protection of AA2024-T3 aluminium alloy

Effect of Plasma Surface Pretreatment on Ce3+-Doped GPTMS-ZrO2 Self-Healing Coatings on Aluminum Alloy

“…They also reported that too high a concentration of cerium ions leads to degradation of barrier properties of the sol-gel matrix. This observation is also consistent with that reported by Schem et al [20] and Paussa et al [8].…”

“…Hexavalent chromium is the best inhibitor known so far and a self-healing agent that was widely used in the industry for corrosion protection of aluminum [4]. However, since hexavalent chromium has been proved to be carcinogenic [5,6], the rare earth element cerium is being studied extensively [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] as a substitute to chromium since it also provides a good inhibition effect in addition to being environmentally friendly and having a self-healing ability. It blocks the pores and prevents corrosion even on scratched areas during longterm exposure.…”

“…There are several reports on experimental studies on cerium-doped solgel coatings as self-healing coatings on Al/Al alloys. Effect of inhibitor (CeO 2 ) particle sizes [9], inhibitor concentrations [20], and the way in which the inhibitors are contained in the sol-gel matrix [7] have been studied and reported. According to Zheludkevich et al [7], who studied on cerium ion doping in tetraethoxysilane, 3-Glycidoxypropyltrimethoxy silane (GPTMS), tetra-n-propoxyzirconium (TPOZ) hybrid sol-gel matrix, a higher corrosion protection was observed when the hybrid sol-gel films were prepared with cerium containing zirconia nanoparticles, compared to cerium ion doping directly into the sol-gel matrix.…”

New Sol-gel Formulations to Increase the Barrier Effect of a Protective Coating Against the Corrosion and Wear of Galvanized Steel

“…The evolution of a coating resistance is a major characteristic of the barrier properties of a protective layer 44 . The system that showed a better performance, i.e., good barrier properties, was sample F1P90.…”

Particle Characterisation and Depletion of Li2CO3 Inhibitor in a Polyurethane Coating

“…Many new inhibitor systems have been the subject of extensive research, including rare earths [1][2][3][4][5][6][7][8][9][10][11][12][13][14], vanadates [15,16], organic compounds [17][18][19][20][21][22][23], sacrificial particles or functional properties in coatings [24][25][26][27][28], double-layered hydroxides containing inhibitors [29][30][31][32][33][34][35][36][37][38][39][40][41] and, in many cases, combinations of these. The search for alternatives is probably most intense for aerospace applications, where chromate inhibitors have been the mainstay of corrosion prevention for many decades.…”