Evaluation of Scratch Resistance of Polyether Ether Ketone ( PEEK ) Nanocomposite Coatings Reinforced With Ceria—Effect of Composition and Ultraviolet ( UV ) Exposure

Amal Ameen Seenath; Mirza Murtuza Ali Baig; Abdul Samad Mohammed

doi:10.1002/pc.70318

journal article·2026-02-10

Evaluation of Scratch Resistance of Polyether Ether Ketone ( PEEK ) Nanocomposite Coatings Reinforced With Ceria—Effect of Composition and Ultraviolet ( UV ) Exposure

Amal Ameen Seenath, Mirza Murtuza Ali Baig, Abdul Samad Mohammed

Polymer Composites· Volume 47· Issue 3

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Source abstract

Abstract

ABSTRACT Scratch and UV‐resistance of a polyether ether ketone (PEEK) coating reinforced with ceria (CeO ₂ ) nanoparticles are investigated. Using an electrostatic spray technique, PEEK‐based nanocomposite coatings containing ceria at 0.5, 1.5, and 3 wt% concentrations were applied to mild steel substrates. The process achieved a consistent film thickness of ~100 ± 5 μm. The surface characteristics and mechanical properties were evaluated through water contact angle (WCA) measurements, x‐ray diffraction (XRD), Fourier‐transform infrared (FTIR) spectroscopy, and scratch tests. Among all compositions, the PEEK/1.5 wt% ceria coating exhibited the most outstanding scratch resistance, enduring a maximum applied load of 30 N without showing signs of failure. In addition, after 500 h of ultraviolet (UV) exposure, this concentration also illustrated significantly better UV durability than the pristine PEEK coating. The PEEK/1.5 wt% ceria coating retained a higher WCA (43° ± 3°), compared to the significant drop observed in pristine PEEK (from 80° ± 3° to 28° ± 3°). FTIR analysis revealed that the PEEK/1.5 wt% ceria coating experienced minimal photodegradation compared to the pristine PEEK coating. Scratch testing on UV‐exposed samples showed that the pristine PEEK failed at a much lower load of 12 N, whereas the PEEK/1.5 wt% ceria variant withstood loads up to 30 N without failure, highlighting its excellent resistance to UV‐induced deterioration.

Source: crossref · Quality: baseline

Research context

Metals & alloys Nanomaterials Composites

OpenAlex topics: Polymer Nanocomposite Synthesis and Irradiation · Silicone and Siloxane Chemistry · Catalytic Processes in Materials Science

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Mechanical Engineering Department King Fahd University of Petroleum & Minerals Dhahran Saudi Arabia

Interdisciplinary Research Centre for Advanced Materials King Fahd University of Petroleum & Minerals Dhahran Saudi Arabia

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