热处理对Cr-C涂层结构和力学性能的影响,Transactions of the IMF

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热处理对Cr-C涂层结构和力学性能的影响
Transactions of the IMF ( IF 1.2 ) Pub Date : 2018-02-27 , DOI: 10.1080/00202967.2018.1424403
M. Fellah _{1,

2} , L. Aissani _{2,

3} , A. Zairi ₄ , M. Abdul Samad ₅ , C. Nouveau ₆ , M. Z. Touhami ₂ , H. Djebaili ₁ , A. Montagne ₄ , A. Iost ₄

Affiliation

摘要在本研究中，评估了热处理对不同厚度碳化铬涂层机械和结构性能的影响。涂层通过阴极磁控溅射沉积在 XC100 钢基材上。样品在真空中在 700 到 1000°C 的不同温度下退火 1 小时，导致形成碳化铬。X 射线衍射 (XRD)、微量分析 X/能量色散 X 射线光谱仪 (EDS)、X 射线光电子能谱 (XPS) 和扫描电子显微镜分析用于表征样品。力学性能通过纳米压痕试验评价，残余应力用Stoney公式计算。XRD 分析表明在 900°C 形成了 Cr7C3、Cr23C6 碳化物。对于薄膜，它们完全转变为三元 (Cr, Fe)7C3 碳化物，并且在 1000°C 厚膜的情况下观察到它们的部分转变，而没有形成 Cr3C2。EDS和XPS显示了退火处理过程中Cr、Fe、C、O元素在铬膜和钢基体之间的扩散机制。铬膜厚度从 0.5 增加到 2.64 µm，有助于显着提高机械性能，例如硬度 (H)（从 12 到 26.3 GPa）和杨氏模量（E）（从 250 到 330 GPa），分别。退火处理过程中的O元素。铬膜厚度从 0.5 增加到 2.64 µm，有助于显着提高机械性能，例如硬度 (H)（从 12 到 26.3 GPa）和杨氏模量（E）（从 250 到 330 GPa），分别。退火处理过程中的O元素。铬膜厚度从 0.5 增加到 2.64 µm，有助于显着提高机械性能，例如硬度 (H)（从 12 到 26.3 GPa）和杨氏模量（E）（从 250 到 330 GPa），分别。

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Thermal treatment effect on structural and mechanical properties of Cr–C coatings

ABSTRACT In the present study, the effect of thermal treatment on the mechanical and structural properties of chromium carbide coatings with different thicknesses is evaluated. The coatings were deposited by cathodic magnetron sputtering on XC100 steel substrates. Samples were annealed in vacuum, at different temperatures ranging from 700 to 1000°C for 1 h, resulting in the formation of chromium carbides. X-ray diffraction (XRD), microanalysis X/energy-dispersive X-ray spectrometer (EDS), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy analysis were used to characterise the samples. Mechanical properties were evaluated by nano-indentation tests and the residual stress was calculated with the Stoney formula. The XRD analysis suggests the formation of the Cr7C3, Cr23C6 carbides at 900°C. For thin films, they transformed totally to ternary (Cr, Fe)7C3 carbides and their partial transformation has been observed in the case of thick films at 1000°C, without the formation of Cr3C2. The EDS and XPS showed the diffusion mechanism between the chromium film and the steel substrate for the Cr, Fe, C, O elements during the annealing treatment. The increase of chromium film thickness from 0.5 to 2.64 µm, contributed to the significant enhancement of mechanical properties such as hardness (H) (from 12 to 26.3 GPa) and Young's Modulus (E) (from 250 to 330 GPa), respectively.

更新日期：2018-02-27

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