Thin-film coatings have been commonly used in the automotive industry for a variety of applications. Thermal barrier coatings (TBCs) are designed to extend the life of combustors and turbine blades while mitigating high-temperature issues. In this study, an attempt has been made to develop a single-layer thin film as TBCs for engine applications. Yttria Stabilized Zirconia(YSZ) and Lanthanum Zirconate(LZ) were selected as the coating materials. The physical and chemical characteristics of target materials were studied using Scanning Electron Microscope (SEM), Energy Dispersive x-ray Spectroscopy (EDS), and x-ray Diffraction Analysis (XRD). FCD 400 has been taken as the substrates for this study. In general, TBCs thicknesses are usually about 100–300 μm, while in this work, a coating thickness of 750 nm is attempted using EB-PVD and its performance was evaluated. The mechanical, tribological, and thermal behaviors of the uncoated and coated substrates were characterized as per ASTM standards. Maximum hardness of 3.68 GPa was observed on the YSZ coated substrates. The average Coefficient of Friction (COF) and Coefficient of Thermal Expansion(CTE) values of YSZ coated substrates were 0.334 and 1.33נ10^–5 K⁻¹, respectively, which were comparatively lower than LZ and uncoated substrates. On the contrary, the adhesive characteristics of YSZ and LZ coated substrates were enhanced, which was evident from their results of 6.28N and 6.19N respectively. The thermal conductivity of LZ coated substrates was found to be 3.2% lower than YSZ and 11% lower than uncoated substrates, respectively. From the results, it is observed that LZ thin film coating have better thermal properties than YSZ, which is best suited for TBCs application. Following evaluation of thin-film coatings, confirms that thin-film TBCs are a reliable approach for thermal and wear production as compared to thick TBCs, and their extended life could improve productivity and economic benefits for automotive industries.

薄膜涂层已普遍用于汽车工业的各种应用。热障涂层 (TBC) 旨在延长燃烧器和涡轮叶片的寿命，同时减轻高温问题。在这项研究中，尝试开发单层薄膜作为发动机应用的 TBC。选择氧化钇稳定氧化锆(YSZ)和锆酸镧(LZ)作为涂层材料。使用扫描电子显微镜 (SEM)、能量色散 x 射线光谱 (EDS) 和 x 射线衍射分析 (XRD) 研究了目标材料的物理和化学特性。FCD 400 已作为本研究的底物。一般来说，TBCs 的厚度通常约为 100-300 μm，而在这项工作中，使用 EB-PVD 尝试了 750 nm 的涂层厚度，并对其性能进行了评估。未涂层和涂层基材的机械、摩擦和热行为按照 ASTM 标准进行表征。在 YSZ 涂层基材上观察到的最大硬度为 3.68 GPa。YSZ 涂层基材的平均摩擦系数 (COF) 和热膨胀系数 (CTE) 值为 0.334 和 1.33נ10 ^–5 K ^-1分别低于 LZ 和未涂层基材。相反，YSZ 和 LZ 涂层基材的粘合特性得到增强，这从它们分别为 6.28N 和 6.19N 的结果中可以看出。发现 LZ 涂层基板的热导率分别比 YSZ 低 3.2%，比未涂层基板低 11%。从结果可以看出，LZ 薄膜涂层比 YSZ 具有更好的热性能，最适合 TBC 应用。对薄膜涂层进行评估后，证实与厚 TBC 相比，薄膜 TBC 是一种可靠的热和磨损生产方法，其延长的使用寿命可以提高汽车行业的生产率和经济效益。