Fabrication and high temperature oxidation resistance of ZrO2/Al2O3 micro-laminated coatings on stainless steel

Structural and Optical Properties of Thermally Oxidized Zirconium Dioxide Films

“…It is thermally and chemically stable compound which is potential for protective coating for application in corrosive, high temperature and harsh environments [1]. It has high dielectric constant (25) and thermodynamically stable with silicon, hence a promising substitute for silicon dioxide in gate dielectrics (transistor) with low leakage current densities [2,3].…”

Fabrication and High Temperature Friction Behavior and Oxidation Resistance of Ni-Co-ZrO2 Composite Coating

“…14(b),(d) show XRD patterns of Ni-Co coating and Ni-Co-ZrO 2 composite coating after high temperature oxidation test for 6 h at 873 K. It can be seen that NiO and CoO formed after high temperature oxidation test. In summary, it is well known that the oxygen diffusion through the coating is the dominant diffusion mechanism during the oxidation process 3 . The reason why Ni-Co-ZrO 2 composite coatings can improve the high temperature oxidation resistance is that the dispersive ZrO 2 particles in the Ni-Co matrix reduce the effective area of Ni-Co alloy contacting with ambient oxygen.…”

High Temperature Oxidation of ZrO<SUB>2</SUB>/Al<SUB>2</SUB>O<SUB>3</SUB> Thin Films Deposited on Steel

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] However, the oxidation behavior of ZrO 2 /Al 2 O 3 thin films has not been adequately studied before, although the films were frequently exposed to oxidative atmospheres at high temperatures during their service as wear and corrosion resistant hard ones. Cyclic oxidation resistance of the electrolytically deposited ZrO 2 /Al 2 O 3 micro-laminated film was briefly studied at 900 C. 6 The film consisted of tetragonal-ZrO 2 , -Al 2 O 3 , and -Al 2 O 3 , and it improved the oxidation resistance of the stainless steel substrate because micro-laminated Al 2 O 3 layers suppressed inward oxygen diffusion. In addition, high-temperature oxidation behavior of a Al 2 O 3 /ZrO 2 duplex film deposited on a TiAl alloy by sol-gel processing was previously studied.…”