Ali Asghar, Piatkowski Piotr, Nawaz Tahir, Ahmad Shahbaz, Ibrahim Taleb, Khamis Mustafa, Alnaser Ali S
Department of Physics, American University of Sharjah, Sharjah 26666, United Arab Emirates.
Materials Science and Engineering Program, College of Arts and Sciences, American University of Sharjah, Sharjah 26666, United Arab Emirates.
Materials (Basel). 2023 Jan 18;16(3):909. doi: 10.3390/ma16030909.
A two-step femtosecond-pulsed laser deposition (fs-PLD) process is reported for the rapid development of uniform, poreless, crack-free, and well-adhering amorphous coatings of source materials with a high melting point. The first step comprises a high-rate raw deposition of the source material via fs-PLD, followed by a second step of scanning the raw sample with fs laser pulses of optimized fluence and scan parameters. The technique is applied to develop substoichiometric molybdenum oxide (MoO, x < 3) coatings on mild steel. The thickness of the layer was ~4.25 μm with roughness around 0.27 μm. Comprehensive surface characterization reveals highly uniform and relatively moderate roughness coatings, implying the potential of these films as robust corrosion-resistant coats. Corrosion measurements in an aqueous NaCl environment revealed that the coated mild steel samples possess an average corrosion inhibition efficiency of around 95% relative to polished mild steel.
报道了一种两步飞秒脉冲激光沉积（fs-PLD）工艺，用于快速制备均匀、无孔、无裂纹且附着力良好的高熔点源材料非晶涂层。第一步包括通过fs-PLD高速沉积源材料，随后第二步是用优化能量密度和扫描参数的飞秒激光脉冲扫描原始样品。该技术用于在低碳钢上制备亚化学计量比的氧化钼（MoO，x < 3）涂层。涂层厚度约为4.25μm，粗糙度约为0.27μm。全面的表面表征显示涂层高度均匀且粗糙度相对适中，这意味着这些薄膜有潜力成为坚固的耐腐蚀涂层。在NaCl水溶液环境中的腐蚀测量表明，相对于抛光的低碳钢，涂覆的低碳钢样品平均腐蚀抑制效率约为95%。
