Wear behavior of epoxy resin reinforced with ceramic nano- and microparticles

J. Abenojar, Y. Ballesteros, M. Bahrami, M.A. Martínez, J.C. del Real-Romero

Polymers Vol. 16, nº. 7, pp. 878-1 - 878-17

Summary:

Cavitation erosion poses a significant challenge in fluid systems like hydraulic turbines and ship propellers due to pulsed pressure from collapsing vapor bubbles. To combat this, various materials and surface engineering methods are employed. In this study, nano and micro scale particles of silicon carbide (SiC) or boron carbide (B₄C) were incorporated as reinforcement at 6% and 12% ratios, owing to their exceptional resistance to abrasive wear and high hardness. Microparticles were incorporated to assess the damage incurred during the tests in comparison to nanoparticles. Wear tests were conducted on both bulk samples and coated aluminum sheets with a 1mm of composite. Additionally, cavitation tests were performed on coated aluminum tips until stability of mass loss was achieved. The results indicated a distinct wear behavior between the coatings and the bulk samples. Overall, wear tended to be higher for the coated samples with nanocomposites than bulk, except for the nano-composite material containing 12% SiC and pure resin. With the coatings, higher percentages of nanometric particles correlated with increased wear. The coefficient of friction remained within the range of 0.4 to 0.5 for the coatings. Regarding the accumulated erosion in the cavitation tests for 100 min, it was observed that for all nanocomposite materials, it was lower than in pure resin. Particularly, the composite with 6% B₄C was slightly lower than the rest. In addition, the erosion rate was also lower for the composites.

Spanish layman's summary:

La erosión por cavitación produce desgaste en turbinas hidráulicas y hélices. En este estudio se propone el recubrimiento de estas superficies con resina epoxi cargada con nano y macropartículas de carburos de silicio y boro, debido a su excepcional resistencia al desgaste abrasivo y su alta dureza.

English layman's summary:

Cavitation erosion produces wear in hydraulic turbines and propellers. In this study, the coating of these surfaces with epoxy resin loaded with nano and macroparticles of silicon and boron carbides is proposed, due to its exceptional resistance to abrasive wear and high hardness.

Keywords: cavitation erosion; wear; nanoparticles; silicon carbide; boron carbide; coating; nanocomposites; epoxy resin

JCR Impact Factor and WoS quartile: 4,700 - Q1 (2023)

DOI reference: https://doi.org/10.3390/polym16070878

Published on paper: April 2024.

Published on-line: March 2024.

Citation:
J. Abenojar, Y. Ballesteros, M. Bahrami, M.A. Martínez, J.C. del Real-Romero, Wear behavior of epoxy resin reinforced with ceramic nano- and microparticles. Polymers. Vol. 16, nº. 7, pp. 878-1 - 878-17, April 2024. [Online: March 2024]