Why Materials Characterization Training Pays Off

Modern characterization instruments produce a result with a few clicks, and that convenience brings with it the illusion that the result is correct. Yet the "pore" in an SEM image may be a charging artefact, the "new phase" in an XRD pattern a peak from the sample holder, and the "coarse fraction" in a laser diffraction result an undispersed agglomerate. None of these errors appears in the instrument report; they are caught only by an eye that understands the physics of the method.

The cost of a misinterpreted result is rarely limited to the analysis fee. Months of process changes to eliminate a contaminant that does not exist, the rejection of a supplier batch that actually meets specification or, conversely, the release of a defective material into production all generate far larger costs. Our experience across industries shows that the great majority of "the instrument is wrong" complaints reaching a laboratory originate in sample preparation or parameter selection.

The manufacturer's installation training usually teaches how to operate the software; it does not teach which results can be trusted. Effective characterization training must address five layers together: the physical principle and limits of the method, the influence of sample preparation on the result, deliberate selection of measurement parameters, recognition of common artefacts, and reporting the result together with its uncertainty. When one of these layers is missing, the operator can run the instrument but cannot defend the data.

The most valuable part of any training is the hands-on session in which participants work with their own samples. The difference between the ideal spectrum in a textbook and the spectrum of a real sample from the production line can only be experienced at the instrument. Our programmes therefore support the theoretical content with examples specific to the participant's industry and, wherever possible, with samples they bring themselves.

Good training also answers the question "when not to measure". Knowing which question a method cannot answer is as important as knowing the method itself, and unnecessary or misdirected analysis requests fall markedly in an experienced team. A team that understands the limits of EDS, for instance, will not ask it to quantify lithium or to resolve a 50 nm coating on a rough surface.

The two types of training serve different needs. Instrument operator training is for personnel who will use a specific instrument (SEM/EDS, XRD, Raman or a rheometer, for example) on a daily basis: sample loading, alignment, parameter selection, routine maintenance, calibration checks and data processing are taught hands-on at the instrument. The goal is an operator who can work independently and safely and apply standard procedures.

A materials characterization fundamentals course is aimed at people who do not operate the instrument but interpret its results and make decisions: R&D engineers, quality managers, purchasing and supplier-quality teams. It teaches which method answers which question, how to read a report and what to ask of a laboratory. In most organisations the greatest return comes from training both groups together, because a shared vocabulary eliminates the misunderstandings between an analysis request and the report that follows.

Clause 6.2 of ISO/IEC 17025 requires the competence of laboratory personnel to be defined, achieved through training, monitored and recorded. Records of training and competence assessment must exist for every person authorised to perform a particular method, evaluate results and approve reports. One of the most frequent findings in accreditation assessments is that personnel are in fact competent but the record demonstrating it is missing.

A structured training programme is therefore not only a transfer of technical knowledge but also documented evidence of competence. The practical assessment at the end of the training shows concretely which methods a participant can be authorised for and feeds directly into the organisation's quality system. Comparable requirements exist in sector quality systems such as ISO 9001 and IATF 16949.

The first step in choosing training is to define the objective in one sentence: "our team should be able to interpret SEM/EDS reports independently" and "our two operators should run the XRD instrument in routine quality control" call for very different programmes. The participant profile (operator, engineer, manager), the current level of knowledge and the decisions that will be entrusted to these people after training should then be clarified. A generic course chosen without this framework rarely meets anyone's actual need.

A good programme offers hands-on sessions on real instruments, the opportunity to work with the participants' own samples, a measurable final assessment and a technical channel for questions after the training. Small groups are more effective than large classes because they increase the time each participant spends at the instrument. Ask for the programme outline and the assessment criteria in writing before committing.

NAKTEM delivers instrument operator training on the SEM/EDS, XRD, Raman and rheometer systems in its own laboratory, and fundamentals and ISO/IEC 17025 training with content adapted to the needs of your organisation. Programmes are designed jointly, according to the participants' industry and the instruments they already have, and each participant receives a record of the content covered and the practical assessment completed.