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Chromium coatings from trivalent chromium plating baths: Characterization and cathodic delamination behaviour

机译:来自三价镀铬浴的铬涂层:表征和阴极分层行为

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摘要

Novel two-layer chromium-based coatings comprised of a first layer containing chromium, oxygen and carbon (Cr-O-C) and an oxygen rich (Cr-O) topcoat were electrodeposited from trivalent chromium electrolyte. The complex structure and composition of the coatings were studied using complementary characterization techniques. The electrodeposited oxide was found to be amorphous and oxygen-deficient. In operando ambient pressure X-ray photoelectron spectroscopy when heating the sample from room temperature to 450 degrees C and Raman spectroscopy after the heating ascertained the metastable nature of the oxide. The cathodic delamination of a weak model polymer on these samples was studied using in situ scanning Kelvin probe.
机译:由含有铬,氧气和碳(Cr-O-C)的第一层和富氧(Cr-O)面涂层的新型双层铬基涂层由三价铬电解质电沉积。 使用互补特性技术研究涂层的复杂结构和组成。 发现电沉积氧化物是无定形和缺氧的。 在OperAndo环境压力X射线光电子能力时,在加热后,在加热后将样品从室温加热至450℃和拉曼光谱,并确定氧化物的亚稳定性。 使用原位扫描的开尔文探针研究了这些样品上弱模型聚合物的阴极分层。

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