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用透射电镜研究了Ti/TiN多层膜的显微形貌,并用X射线衍射与透射电镜的微束电子衍射相结合的方法获得多层膜的晶体结构、相组成及其空间分布的信息。证明了Ti/TiN多层膜有明显的分层结构,在每对相邻的Ti层和TiN层之间,均存在Ti_2N界面过渡层,在膜基界面处存在FeTi过渡层。多层膜的晶粒呈纤维状,其尺寸随单层厚度的降低而减小,此即多层膜的晶粒细化效应,它伴随着膜层硬度的增加。 相似文献
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通过固定薄膜厚度与调制周期,改变Ti与TiN调制比(分别为1∶3、1∶5、1∶9和1∶11),采用反应磁控溅射法在硅片上制备Ti/TiN多层膜,研究调制比对薄膜微观组织结构及薄膜与基体结合力的影响。用X射线衍射仪(XRD)分析薄膜的晶体结构,用扫描电镜(SEM)观察薄膜的形貌,用纳米压痕仪测试薄膜的硬度,用纳米划痕仪测试薄膜与基体之间的结合力。结果表明:多层膜中TiN出现(220)晶面择优取向,Ti/TiN薄膜为柱状晶方式生长。柱状晶的细化程度随调制比的变化而发生周期性变化,柱状晶组织细化程度高的样品具有更高的硬度,但结合力更低。 相似文献
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《电镀与涂饰》2020,(15)
为提高钛合金的抗冲蚀性能,采用真空阴极电弧离子镀技术在不同表面粗糙度(Ra)的TC4钛合金表面制备了Ti/Ti N/Zr/Zr N多层膜。采用扫描电镜(SEM)、X射线衍射仪(XRD)、显微硬度计、划痕仪和砂粒冲刷试验仪分析了多层膜的截面形貌、微观结构、厚度、显微硬度、结合力和抗砂粒冲刷性能。重点研究了基体表面粗糙度对多层膜的结合力和抗砂粒冲刷性能的影响。结果表明,所得Ti/TiN/Zr/ZrN多层膜厚度约为12μm,显微硬度大于3 000 HV,能显著地提高TC4钛合金基材的抗砂粒冲刷性能。在相同工艺条件下,基体表面粗糙度越小,其表面膜层的结合力和抗砂粒冲刷性能越佳。为获得综合性能良好的Ti/TiN/Zr/ZrN多层膜,TC4钛合金基体的表面粗糙度必须控制在≤1.60μm。 相似文献
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TiN薄膜具有优异的综合性能而受到广泛应用和研究。综述了TiN薄膜的多种制备技术,介绍了制备技术和工艺参数对TiN薄膜结构和性能影响,阐述了TiN薄膜应用领域,最后展望了TiN薄膜未来发展方向。 相似文献
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简要介绍了TiN的性能及主要用途,分析和阐述了TiN粉末制备的研究现状及发展趋势,重点讨论了碳热还原氮化合成TiN粉末存在的问题和前景。 相似文献
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研究了TiN薄膜的阳极氧化。结果表明,在稀磷酸溶液中对TiN薄膜进行阳极氧化处理后,在TiN表面形成一层氧化膜。氧化膜呈干涉色,其颜色随槽压变化;氧化膜色调均匀,耐磨性好。XPS及AES分析结果表明,氧化膜由TiO2组成,且在槽压在9V时膜厚约90nm。 相似文献
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在离子镀TiN镀层表面电沉积Au镀层,经280~400℃,0.5~2h的扩散处理,可得到表层富集Au,底层富集TiN的Au-TiN复合镀层。该镀层既有18~24K真金镀层的色泽,又有TiN镀层的耐磨性。 相似文献
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Junbo Liu Ji Xiong Li Zhou Zhixing Guo Huiting Wen Qianbing You Xiangrong Li Jian Liu Wu Zhao 《International Journal of Applied Ceramic Technology》2021,18(3):792-802
In the work, TiAlN for physical vapor deposition (PVD), multilayer TiN-Al2O3-TiCN-TiN for chemical vapor deposition (CVD), and diamond-like carbon (DLC) for plasma-enhanced chemical vapor deposition (PECVD) were deposited on the cermet inserts. Characteristics and wear behaviors of the three coated cermets during dry cutting of 7075 aluminum alloys were observed. The results show that TiN-Al2O3-TiCN-TiN coatings have highest adhesion strength and hardness. At the cutting speed of 1100 r/min, the depth of 0.2 mm, and the feed rate of 0.1 mm/r, the three coated inserts show the best wear-resistant properties. In this case, TiN/Al2O3/TiCN/TiN shows the worst wear-resistant properties (value of the flank wear [VBB] = 0.062 mm), while DLC coatings show the most excellent wear-resistant properties (VBB = 0.046 mm). During the cutting of aluminum alloys, which have high plasticity and low melting point, adhesive wear dominate on the flank of the inserts. The thickest coating of TiN/Al2O3/TiCN/TiN results in the bluntest cutting edge, which form the most serious adhesive worn zone. For the TiAlN and DLC coatings, due to a smaller cutting force, the two coatings have much better wear resistance. Further, the self-lubricating properties of DLC show excellent effect on protecting the inserts. Thus, the DLC-coated cermets have the best wear-resistant properties. Further, the TiAlN-coated cermets have the widest wear-affected zone while the DLC coating has the narrowest. 相似文献
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在离子镀TiN镀层表面电沉积Au镀层,经280~400℃,0.5~2h的扩散处理,可得到表导富集Au,底层富集TiN的Au-TiN复合镀层。该镀层既有18~24K真金镀层的色泽,又有TiN镀层的耐磨性。 相似文献
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《应用陶瓷进展》2013,112(6):278-279
AbstractResults are presented of a study dealing with an AlN–TiN composite material for high temperature applications. Hardness, microhardness, compressive strength, electrical resistance, and thermal conductivity of the material were measured at room temperature and flexural strength was measured at temperatures from 20 to 1800°C. The composite material containing 40 wt-% AlN and 60 wt-% TiN and hot pressed at 1850–1950°C exhibits an increase in strength of 20% with a rise in temperature, which permits it to be used at elevated temperatures. 相似文献
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本文研究了纳米TiN对于粉煤灰水泥(粉煤灰掺量为40%)力学性能的影响,并结合XRD、TG-DTA、SEM和水化热等测试手段进行了分析.研究结果表明,纳米TiN在粉煤灰水泥中最佳掺量为1%,与空白组相比,1 d、3 d、7 d、28 d的抗压强度分别增加了27.1%、23.3%、37.9%和21.0%.通过XRD和TG-DTA等微观测试发现添加纳米TiN不会生成新的水化产物;通过SEM观察水泥水化微观结构,发现纳米TiN的加入能够生成更多的水化产物,在一定程度上促进水泥结构致密化;水化热测试结果表明添加适量的纳米TiN能够加快水化速率,使水泥水化第二放热峰提前,随着纳米TiN掺量的增加其水泥水化放热总量逐渐增加. 相似文献
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O. N. Grigor'ev T. V. Mosina A. D. Panasyuk A. I. Yuga 《Refractories and Industrial Ceramics》2003,44(1):62-64
The tribological properties of TiN – AlN-based composites forming a friction couple with 65G-grade steel under lubricant-free conditions are studied in the speed range of 4–16 m/sec and pressure of 0.5 – 2.0 MPa. The increase both in speed and load causes a decrease in the coefficient of friction. For a speed of 16 m/sec and pressure of 2.0 MPa, the coefficient of friction is 0.16 – 0.11, and the linear wear is 6.0 – 5.7 m/km. The superior tribological properties of TiN – AlN composites are related to the high mechanical properties of these materials. During friction at high speeds and loads, the abrasive and adhesive wear decreases owing to the oxide films that form on the surface and play the role of a solid lubricant and thus reduce friction loss. 相似文献
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