Czapczyk Kazimierz
Faculty of Ocean Engineering and Ship Technology, Gdansk University of Technology, 80-233 Gdansk, Poland.
Materials (Basel). 2020 Dec 18;13(24):5797. doi: 10.3390/ma13245797.
The article presents the results of tribological tests of Ni-P/SiN nanocomposite and Ni-P nickel layers deposited on the AW-7075 aluminum alloy by chemical reduction method, and the AW-7075 alloy without coating. Nanocomposite layers were produced using SiN siliconnitride in the form of a polydisperse powder whose particle sizes ranged from 20 to 25 nm. The influence of the content of the dispersion phase layer material on the abrasive wear, which was determined as the "ball on disc" method, was analyzed. Surface topography was examined by the contact method using a profilometer. The purpose of introducing SiN particles into the Ni-P layer was to increase the wear resistance of AW-7075 aluminum alloy parts with an embedded nanocomposite coating. Based on the obtained test results, it was found that the Ni-P/SiN layers are more resistant to wear than the Ni-P layers and the AW-7075 alloy layers, and are a good barrier against abrasive wear at various loads and environmental conditions.
本文介绍了通过化学还原法在AW - 7075铝合金上沉积的Ni - P/SiN纳米复合材料和Ni - P镍层以及未涂层的AW - 7075合金的摩擦学测试结果。纳米复合层是使用粒径范围为20至25 nm的多分散粉末形式的SiN氮化硅制成的。分析了分散相层材料的含量对通过“球盘”法测定的磨料磨损的影响。使用轮廓仪通过接触法检查表面形貌。将SiN颗粒引入Ni - P层的目的是提高带有嵌入式纳米复合涂层的AW - 7075铝合金零件的耐磨性。基于获得的测试结果，发现Ni - P/SiN层比Ni - P层和AW - 7075合金层更耐磨，并且在各种载荷和环境条件下都是抵抗磨料磨损的良好屏障。
