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Effect of thermally grown oxides on colour development of stainless steel

机译：热生长氧化物对不锈钢显色的影响

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摘要

Stainless steels are used in an array of applications where their ability to take on colour is of aesthetic value. Although thermal colouring (heat tinting) is known, particularly in terms of its effect on welds, the surface development of thermally coloured stainless steel has not been considered in detail. This paper demonstrates the colour development of a bright annealed 304 stainless steel with time at temperature. The colour development has been quantified using colour spectrophotoscopy and the colour related to the growth of surface oxide features by scanning electron microscopy and the chemical profiles by X-ray photoelectron spectroscopy (XPS). There is a clear development of both the oxide thickness and chemistry, with increasing time with small nodules being the main features seen across the surface of the samples with time. The oxides have been shown to comprise of an outer iron rich oxide and an inner chromium/iron spinel layer.
机译：不锈钢可用于多种用途，在这些应用中，不锈钢的着色能力具有美学价值。尽管已知热着色（热着色），特别是就其对焊缝的影响而言，但尚未详细考虑热着色不锈钢的表面发展。本文演示了光亮退火的304不锈钢在温度下随时间的显色性。已使用分光热分析法对显色进行了定量，并通过扫描电子显微镜和X射线光电子能谱（XPS）对与表面氧化物特征的生长相关的颜色进行了定量，并对化学分布进行了定量。氧化物厚度和化学性质都有明显的发展，随着时间的增加，小结节是随时间推移在样品表面上看到的主要特征。已经显示该氧化物包括外部富铁氧化物和内部铬/尖晶石铁层。

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