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Mechanical abrasion resistant candle soot based superhydrophobic coating over nanosecond laser textured stainless steel
Surface Topography: Metrology and Properties ( IF 2.7 ) Pub Date : 2020-04-12 , DOI: 10.1088/2051-672x/ab8709
Sunita Ahlawat 1 , Amarjeet Singh 1 , Sunil K Sharma 1 , Pranab K Mukhopadhyay 1 , Rashmi Singh 2 , K S Bindra 1
Affiliation  

In this report, we show that using naturally hydrophobic wax bound carbon soot nanoparticles (WCN) as fillers over laser ablation textured stainless steel surface, a mechanical abrasion resistant superhydrophobic (SH) surface can be prepared. The abrasion resistance may be due to the fact that during mechanical abrasions, the WCN lying in the lower layers of the laser textured surface get spread over the abraded surfaces and maintain superhydrophobicity. Further, the laser created grooves provide a space for the WCN to stay protected from abrasions so that all the WCN do not get wiped away at once. The developed SH surface when abraded by a sandpaper of 3000 grit loaded with 8 kPa load was found to exhibit ∼157° contact angle and ∼7° sliding angle even after 40 cycles of abrasions which corresponded to ∼400 mm abrasion distance. Further, the SH surface obtained by using WCN over laser textured surface was also found to have better abrasion resistance when compared with the SH su...

中文翻译:

纳秒激光织纹不锈钢上的机械耐磨烛光基超疏水涂层

在此报告中,我们表明,使用天然疏水蜡结合的碳烟纳米颗粒(WCN)作为激光烧蚀带纹理的不锈钢表面上的填料,可以制备机械耐磨的超疏水(SH)表面。耐磨性可能归因于以下事实:在机械研磨过程中,位于激光纹理化表面下层的WCN散布在研磨表面上并保持超疏水性。此外,激光产生的凹槽为WCN提供了一个空间,可保护其免受磨损,从而不会立即擦掉所有WCN。用3000 grit砂纸和8 kPa负荷的砂纸打磨后,已显影的SH表面即使在40次磨蚀(相当于〜400 mm磨蚀距离)后仍显示出约157°接触角和约7°滑动角。进一步,
更新日期:2020-04-22
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