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微观结构、表面能和粘附力对PVA/铁氧体尖晶石纳米复合材料摩擦的综合影响

Combined Effect of Microstructure, Surface Energy, and Adhesion Force on the Friction of PVA/Ferrite Spinel Nanocomposites.

作者信息

Darwish Moustafa A, Zubar Tatiana I, Kanafyev Oleg D, Zhou Di, Trukhanova Ekaterina L, Trukhanov Sergei V, Trukhanov Alex V, Henaish Ahmed Maher

机构信息

Physics Department, Faculty of Science, Tanta University, Tanta 31527, Egypt.

Laboratory of Magnetic Films Physics, SSPA "Scientific and Practical Materials Research Centre of NAS of Belarus", 19, P. Brovki Str., 220072 Minsk, Belarus.

出版信息

Nanomaterials (Basel). 2022 Jun 10;12(12):1998. doi: 10.3390/nano12121998.

DOI:10.3390/nano12121998
PMID:35745337
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9227130/
Abstract

Nanocomposite films based on spinel ferrite (MgZnFeAlO) in a PVA matrix were obtained. An increase in the spinel concentration to 10 wt.% caused an avalanche-like rise in roughness due to the formation of nanoparticle agglomerates. The lateral mode of atomic force microscopy (AFM) allowed us to trace the agglomeration dynamics. An unexpected result was that the composite with 6 wt.% of filler had a low friction coefficient in comparison with similar composites due to the successfully combined effects of low roughness and surface energy. The friction coefficient decreased to 0.07 when the friction coefficient of pure PVA was 0.72. A specially developed method for measuring nano-objects' surface energy using AFM made it possible to explain the anomalous nature of the change in tribological characteristics.

摘要

制备了基于尖晶石铁氧体（MgZnFeAlO）在聚乙烯醇（PVA）基体中的纳米复合薄膜。当尖晶石浓度增加到10 wt.%时，由于纳米颗粒团聚体的形成，粗糙度呈雪崩式增加。原子力显微镜（AFM）的横向模式使我们能够追踪团聚动力学。一个意外的结果是，与类似复合材料相比，含有6 wt.%填料的复合材料由于低粗糙度和表面能的成功组合效应而具有较低的摩擦系数。当纯PVA的摩擦系数为0.72时，该复合材料的摩擦系数降至0.07。一种专门开发的使用AFM测量纳米物体表面能的方法使得解释摩擦学特性变化的异常性质成为可能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/417d45d25cab/nanomaterials-12-01998-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/94be661c543a/nanomaterials-12-01998-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/b9a3deb20464/nanomaterials-12-01998-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/9fcd39782ef1/nanomaterials-12-01998-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/697ee8ef0d1d/nanomaterials-12-01998-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/c53a5e7ae004/nanomaterials-12-01998-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/51896d7f72cb/nanomaterials-12-01998-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/6922a30eac37/nanomaterials-12-01998-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/bf8307f81001/nanomaterials-12-01998-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/7588674a5057/nanomaterials-12-01998-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/417d45d25cab/nanomaterials-12-01998-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/94be661c543a/nanomaterials-12-01998-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/b9a3deb20464/nanomaterials-12-01998-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/9fcd39782ef1/nanomaterials-12-01998-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/697ee8ef0d1d/nanomaterials-12-01998-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/c53a5e7ae004/nanomaterials-12-01998-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/51896d7f72cb/nanomaterials-12-01998-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/6922a30eac37/nanomaterials-12-01998-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/bf8307f81001/nanomaterials-12-01998-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/7588674a5057/nanomaterials-12-01998-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b310/9227130/417d45d25cab/nanomaterials-12-01998-g010.jpg

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