Tribological properties of nanostructured TiAlN/W2N multilayer coating produced by PVD
Tribological properties of nanostructured TiAlN/W2N multilayer coating produced by PVD
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PVD 纳米结构 TiAlN/W2N 多层涂层的摩擦学性能
DOI：
10.1016/j.wear.2019.04.021
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发表时间：
2019-07
期刊：
影响因子：
5
通讯作者：
Li Zhujun
中科院分区：
文献类型：
--
作者：
Xu Xing;Su Fenghua;Li Zhujun
采用多弧离子镀和直流磁控溅射技术，在AISI 304 L SS表面沉积了140 ~ 680 nm调制周期的TiAlN/W2N多层镀层。利用掠入射x射线衍射仪（GIXRD）和能谱仪（EDS）研究了TiAlN/W2N多层涂层的相结构和化学成分。详细评估了所得TiAlN/W2N多层涂层的横截面形貌、附着强度、硬度以及摩擦磨损性能。结果表明：不同调制周期制备的TiAlN/W2N涂层具有面心立方结构和致密致密的多层结构；从680 ~ 140 nm，随着调制周期的减小，TiAlN/W2N多层涂层的附着力逐渐降低，这是由于涂层层数增加，残余应力积累增多所致。调制周期为373 nm的多层涂层硬度最高为1757 kgf·mm−2，磨损率最低为2.52 × 10−6mm3(nm)−1。此外，TiAlN/W2N多层涂层在高温下比在室温下表现出更好的摩擦学性能，这是由于摩擦过程中在磨损表面产生了大量的氧化物混合物（WO3、Al2O3、TiO2）。制备的wo3由于其特殊的层状结构和高离子电位而具有自润滑作用，并且其他致密的氧化物混合物可以防止多层涂层的进一步氧化。
TiAlN/W2N multilayer coatings with various modulation periods from 140 to 680 nm were deposited on AISI 304 L SS by multi-arc ion plating and DC magnetron sputtering. The phase structures and chemical compositions of the as-prepared TiAlN/W2N multilayer coatings were investigated by a grazing incidence X-ray diffraction (GIXRD) and an energy dispersive spectrometer (EDS), respectively. The cross-sectional morphology, adhesion strength, hardness, and friction and wear behavior of the resulting TiAlN/W2N multilayer coatings were evaluated in detail. The results show that the as-prepared TiAlN/W2N coatings with different modulation periods are featured with a face-centered cubic (fcc) structure and have a dense and compact multilayer structure. The adhesion strengths of the TiAlN/W2N multilayer coating decrease gradually with the decreasing of the modulation periods from 680 to 140 nm, which results from more residual stress accumulated with the increasing numbers of the coating layers. The multilayered coating with the modulation period of 373 nm exhibits the maximum hardness of 1757 kgf·mm−2and the lowest wear rate of 2.52 × 10−6mm3(Nm)−1among all samples. In addition, the TiAlN/W2N multilayer coating presents better tribological properties under high temperature than under room temperature due to a large number of oxide mixture (WO3, Al2O3, TiO2) produced on the wear surface during the rubbing process. The produced WO3has a self-lubrication effect because of its special layered structure and high ionic potential, and other dense oxide mixture can prevent further oxidation of the multilayered coating.
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影响因子：
2.1
作者：
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通讯作者：
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作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
5.4
作者：
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通讯作者：
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