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首页> 外文期刊>Applied Surface Science >Free electron laser nitriding of metals: From basis physics to industrial applications
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Free electron laser nitriding of metals: From basis physics to industrial applications

机译：金属的自由电子激光氮化：从基础物理到工业应用

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摘要

Titanium was laser nitrided by means of free-electron laser irradiation in pure nitrogen atmosphere. The variation of pulse frequency and macropulse duration of the free electron laser resulted in δ-TiN_x coatings with different thickness and different micro- and macroscopic morphologies. The coatings revealed, characteristic values for hardness, roughness and crystallographic texture, which originate from the growth mechanism, the solid-liquid interface energy and the strain. Further investigations showed that the dendritic growth is beginning at the surface and that the alignment of dendrites is normal to the surface. A correlation of the texture with the time structure of the laser pulses was found. Numerical simulations were performed and compared with the experimental results. The simulations can explain the experimental results.
机译：钛在纯氮气氛中通过自由电子激光辐照进行激光氮化。自由电子激光的脉冲频率和大脉冲持续时间的变化导致δ-TiN_x涂层具有不同的厚度以及不同的微观和宏观形态。涂层显示出硬度，粗糙度和晶体学织构的特征值，其特征在于生长机理，固液界面能和应变。进一步的研究表明，树突生长开始于表面，并且树突的排列垂直于表面。发现纹理与激光脉冲的时间结构的相关性。进行了数值模拟，并与实验结果进行了比较。仿真可以解释实验结果。

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