Focused Ion Beam and Nanomechanical Tests for High Resolution Surface Characterisation: New Resources for Platinum Group Metals Testing: Use of two high resolution techniques allows process optimisation and prediction of in-service behaviour

By Marco Sebastiani; Marco Renzelli; Paolo Battaini; Edoardo Bemporad

doi:10.1595/147106714X675768

ISSN: 0032-1400

oa Focused Ion Beam and Nanomechanical Tests for High Resolution Surface Characterisation: New Resources for Platinum Group Metals Testing

Use of two high resolution techniques allows process optimisation and prediction of in-service behaviour
Authors: By Marco Sebastiani¹, Marco Renzelli¹, Paolo Battaini² and Edoardo Bemporad³
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Affiliations: ¹ University of Rome “Roma Tre” Engineering DepartmentVia della Vasca Navale 79, 00146 RomeItaly ² 8853 SpA Via Pitagora 11, I-20016 Pero, MilanoItaly ³ University of Rome “Roma Tre” Engineering DepartmentVia della Vasca Navale 79, 00146 RomeItaly
Source: Platinum Metals Review, Volume 58, Issue 1, Jan 2014, p. 3 - 19
DOI: https://doi.org/10.1595/147106714X675768
- Published online: 01 Jan 2014

Abstract

Recently, the increasing importance and scope of nanotechnology has extended the need for high resolution characterisation tools beyond their traditional domains. As a consequence, advanced high-resolution tools at the nanoscale are now increasingly used in research and development (R&D) activities, offering the chance for a better understanding of submicron feature size dependence. This paper gives an overview of the synergic application of two high resolution techniques on the platinum group metals (pgms): focused ion beam (FIB) coupled with electron beam imaging, milling and deposition techniques; and nanoindentation testing. After a brief description of both techniques (architecture, probe-sample interaction basics and operation modes), the effectiveness of this combined approach is demonstrated for microstructural and nanomechanical investigations on very small samples. The advantages are low cost, fast and site-specific sample preparation for transition electron microscopy (TEM) analysis; study of the mechanical hardening effect on microstructure and hardness profile at the micron scale; failure analysis; and understanding of plasticity and elasticity behaviour. Two specific case studies related to a platinum-copper alloy for jewellery use and a platinum-rhodium alloy for sensor manufacturing are presented and discussed.

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Focused Ion Beam and Nanomechanical Tests for High Resolution Surface Characterisation: New Resources for Platinum Group Metals Testing

Platinum Metals Review 58, 3 (2014); https://doi.org/10.1595/147106714X675768

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Article Type: Research Article

oa Focused Ion Beam and Nanomechanical Tests for High Resolution Surface Characterisation: New Resources for Platinum Group Metals Testing

Use of two high resolution techniques allows process optimisation and prediction of in-service behaviour

Abstract

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