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Effect of stand-off distance on EMAA splats deposited onto glass and mild steel substrates

机译：隔离距离对沉积在玻璃和低碳钢基材上的EMAA板的影响

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Thermal spray coatings are comprised of millions of heated particles that are driven at high velocity to impact against a substrate; thereby building up to form a consolidated coating. Thus, investigating single solidified droplets contributes to fundamental understanding of coating evolution and their properties. In this study, Scanning Electron Microscopy (SEM) studied the splat morphology of flame sprayed ethylene methacrylic acid (EMAA) with respect to the stand-off distance when deposited onto glass and mild steel substrates. A splat shape transition from a "splash" to a "disc shape" was observed. The morphology of EMAA droplets can be described as a 'splash splat' when sprayed onto mild steel at room temperature, whereas a 35 cm stand-off distance produced a disk-shaped splat when the polymer was deposited onto a glass substrate.
机译：热喷涂涂层由数百万个加热的颗粒组成，这些颗粒被高速驱动以撞击基材。从而积聚形成坚固的涂层。因此，研究单个固化的液滴有助于对涂层演变及其性能的基本了解。在这项研究中，扫描电子显微镜（SEM）研究了火焰喷涂乙烯甲基丙烯酸（EMAA）的飞溅形态，该沉积形态是沉积在玻璃和低碳钢基材上时的间隔距离。观察到从“飞溅”到“盘形”的碎片形状过渡。当在室温下喷涂到低碳钢上时，EMAA液滴的形态可以描述为“飞溅飞溅”，而当将聚合物沉积到玻璃基板上时，35 cm的对峙距离会产生盘状飞溅。

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