XRD and XPS study on reactive plasma sprayed titanium-titanium nitride coatings
XRD and XPS study on reactive plasma sprayed titanium-titanium nitride coatings
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DOI：
10.1016/s0040-6090(00)01871-x
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发表时间：
2001-03-15
期刊：
影响因子：
2.1
通讯作者：
Lavacchi, A
中科院分区：
文献类型：
--
作者：
Galvanetto, E;Galliano, FP;Lavacchi, A
钛在含氮等离子气体中的反应等离子喷涂允许形成由原位形成的氮化钛（TiN和Ti 2N）增强的硬钛复合涂层。在本研究中，钛反应喷涂过程中氮化钛的形成进行了研究，通过两种不同的分析技术：X射线衍射（XRD）和X射线光电子能谱（XPS）。Ti-N相图预测的扩散凝固顺序与实验结果一致。发现保留在涂层中的氮主要作为氮化钛，而不是作为钛晶格中的间隙氮。据推测，TiN的形成和直接凝固发生在喷涂颗粒的飞行过程中。固体TiN的存在限制了钛溅射物在凝固时的热收缩。因此，观察到的残余α-Ti的晶胞变形归因于凝固过程中产生的拉伸应力。(C)2001 Elsevier Science B. V.保留所有权利。
Reactive plasma spraying of titanium in a nitrogen-containing plasma gas allows the formation of hard titanium composite coatings reinforced by in situ formed titanium nitrides (TiN and Ti2N). In the present study, the formation of titanium nitrides during the reactive spraying of titanium was studied by means of two different analysis techniques: X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The diffusion and solidification sequence predicted by the Ti-N phase diagram was consistent with the experimental results. The nitrogen retained in the coating was found mainly as titanium nitrides and not as interstitial nitrogen in the titanium lattice. It is hypothesised that the formation and direct solidification of TiN occurs during the flight of the sprayed particles. The presence of solid TiN constrains the thermal contraction of titanium splats upon solidification. The observed cell distortion of the residual alpha -Ti is thus attributed to tensile stresses arising from the solidification process. (C) 2001 Elsevier Science B.V. All rights reserved.