Apparatus for automatic chemical etching of metallographic samples
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F21%3A00551144" target="_blank" >RIV/68081731:_____/21:00551144 - isvavai.cz</a>
Result on the web
<a href="https://www.confer.cz/metal/2021/4146-automatic-chemical-etching-of-metallographic-samples" target="_blank" >https://www.confer.cz/metal/2021/4146-automatic-chemical-etching-of-metallographic-samples</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.37904/metal.2021.4146" target="_blank" >10.37904/metal.2021.4146</a>
Alternative languages
Result language
angličtina
Original language name
Apparatus for automatic chemical etching of metallographic samples
Original language description
The microstructure of steels after mechanical polishing is revealed only by the application of a suitable etchant. To achieve adequate optical or electron microscope images, the specimen surface must be free of any artifacts. Chemical etching can be defined as a controlled corrosion process. The metal of the investigated material passes as cations into the etchant solution during the chemical etching reaction. Chemical etching is usually performed manually either by immersing the sample in the etchant with simultaneous stirring or by swabbing with a lint-free cloth soaked in the etchant. It is also extremely important to debug the process of removing the sample from the bath and subsequent cleaning. It is recommended to wash the sample after removal from the etchant with water (distilled or demineralized) or alcohol (ethanol, methanol, or isopropyl alcohol) and dry it properly (depending on the etchant and the etched material). The main problem with these processes is the human factor, which significantly contributes to the already limited repeatability. All operation steps must be performed by properly trained personnel in the field of occupational safety because hazardous substances are handled. A high manual dexterity is also needed. Training a new employee is a long-term process. Moreover, keeping the exact etching time can be a challenge and one second can decide success. These problems become more serious in the case of using surface sensitive analytical method, such as a low energy scanning electron microscopy, due to the high spatial resolution and extreme surface sensitivity. We have developed an apparatus for automatic etching of metallographic samples of purpose to overcome all above-mentioned difficulties. The apparatus and results of the first experiments will be presented.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/TN01000008" target="_blank" >TN01000008: Center of electron and photonic optics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
METAL 2021. 30th Anniversary International Conference on Metallurgy and Materials. Conference proceedings
ISBN
978-80-87294-99-4
ISSN
2694-9296
e-ISSN
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Number of pages
6
Pages from-to
423-428
Publisher name
TANGER
Place of publication
Ostrava
Event location
Brno
Event date
May 26, 2021
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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