Kucharska Beata, Sobiecki Jerzy Robert, Czarniak Pawel, Szymanowski Karol, Cymerman Konrad, Moszczyńska Dorota, Panjan Peter
Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, 02-507 Warsaw, Poland.
Department of Mechanical Processing of Wood, Institute of Wood Science and Furniture, Warsaw University of Live Science, Nowoursynowska 159, 02-787 Warsaw, Poland.
Materials (Basel). 2021 May 22;14(11):2740. doi: 10.3390/ma14112740.
The influence of different types of cemented carbide blades and thickness of TiAlN/a-C:N and TiN/AlTiN protective coatings used in the wood industry on cutting performance has been studied. Three types of WC-Co cemented carbide blades with different cobalt content were used in the study. The thicknesses of both types of coatings were 2 and ~5 µm. The structure, chemical and phase composition were studied using transmission and scanning electron microscopy (TEM, SEM), X-ray dispersion spectroscopy (EDX) and X-ray diffraction (XRD), respectively. The adhesion was evaluated by scratch test. Nanohardness and durability tests of uncoated and coated blades were performed. We found that the blades covered with 5 µm TiN/AlTiN coatings exhibited the best durability characteristic. The cutting distances were within the range ~6700-7080 depending on the substrates in comparison with pure substrates (4300-4900) and 2 µm TiN/AlTiN coatings (5400-6600). The presence of a thin and soft outer a-C:N layer aggravates the nanohardness and durability of the coated blades.
研究了木材工业中使用的不同类型硬质合金刀片以及TiAlN/a-C:N和TiN/AlTiN保护涂层的厚度对切削性能的影响。研究中使用了三种钴含量不同的WC-Co硬质合金刀片。两种涂层的厚度均约为2μm和5μm。分别使用透射和扫描电子显微镜（TEM、SEM）、X射线色散光谱（EDX）和X射线衍射（XRD）研究了结构、化学和相组成。通过划痕试验评估附着力。对未涂层和涂层刀片进行了纳米硬度和耐久性测试。我们发现，覆盖有5μm TiN/AlTiN涂层的刀片表现出最佳的耐久性特征。与纯基体（约4300 - 约4900）和2μm TiN/AlTiN涂层（约5400 - 约6600）相比，切削距离在约6700 - 约7080范围内，具体取决于基体。薄而软的外层a-C:N层的存在会降低涂层刀片的纳米硬度和耐久性。
Zotero 插件
