Experimental investigations of sol-gel process parameters for wear reduction on thermal barrier coated AA2024 aluminum alloys with the use of Taguchi-based optimization

Effect of Deposition Conditions on Phase Content and Mechanical Properties of Yttria-Stabilized Zirconia Thin Films Deposited by Sol-Gel/Dip-Coating

“…Our results show that the wear rate decreased 41% from 2:2 × 10 −5 g/Nm down to 1:3 × 10 −5 g/Nm for steel and three layers of YSZ, respectively. These values are similar to those reported for plasma sprayed calcia and magnesia zirconia coatings, which range between 0.6 and 6:25 × 10 −5 g/Nm [52], and slightly higher than other YSZ coatings, with values of 0:14 × 10 −6 g/Nm [53]. Although in less concentration, EDS elemental maps (see Figure S2 in the supplementary material) showed that zirconia was still present on the surface of steel after the wear test, most likely as the result of the good adherence and higher hardness achieved.…”