Fracture and yield behaviour of wear and erosion resistant boron phosphide coatings for aerospace and automotive applications

A. A. Ogwu, T. Hellwig, D. Haddow

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Purpose: The investigation of mechanical properties of boron phosphide thin film coatings prepared by PECVD. Design/methodology/approach: The hardness of the films was determined by nanoindentation. The fracture toughness was measured by Vickers indentation and the yield strength of the films on ZnS and <100> silicon substrate was measured by a simplified form of the spherical cavity model. Findings: The measured mechanical properties indicate that boron phosphide coatings have potential engineering applications beyond protecting infrared substrates from sand erosion in aerospace environments. Research limitations/implications: Their mechanical properties are comparable to those of DLC and Si-DLC films, in addition to their superior corrosion and sand abrasion resistance. Practical implications: Originality/value: Experimental data on the mechanical properties of boron phosphide coatings that indicate their surface protection promise in engineering applications.

Original languageEnglish
Pages (from-to)30-34
Number of pages5
JournalArchives of Materials Science and Engineering
Volume75
Issue number1
Publication statusPublished - Sep 2015

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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