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The absorption of moisture by metal powder in a humid environment and the effects on its composition

Vluttert, N. (2016) The absorption of moisture by metal powder in a humid environment and the effects on its composition.

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Abstract:Selective Laser Melting is a rapid prototyping technology that enables the production of complex geometric parts with customisable material properties. This study aims to investigate whether the environment in which the metal powder is kept, for example a highly humid environment, could influence the properties of the metal powder, and as a result of this alter the mechanical properties of the final component. Three metal powder alloys were analysed for moisture absorption; Inconel 718, AlSi10Mg and Ti6A14V. Of these alloys, the AlSi10Mg samples were analysed more exhaustive using two X-ray spectroscopy techniques to determine if the composition of the material has changed as a result of the exposure to a humid environment. It was found that for the limited humidity exposure applied in this research, the absorbed amount of moisture by the metal powder was less than 0,3% of it’s mass. Also, there is no indication that the humid environment has had an influence on the composition of the materials that were exposed to it, because there was a high variability of composition among the particles, especially on the surface of each one.
Item Type:Essay (Bachelor)
Faculty:ET: Engineering Technology
Subject:51 materials science, 52 mechanical engineering
Programme:Mechanical Engineering BSc (56966)
Link to this item:http://purl.utwente.nl/essays/71620
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