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Manufacturing industries using powder metallurgy (PM) techniques – including additive manufacturing (AM) and metal injection moulding – rely on a supply chain of closely specified, high-performance metal powders to produce precision components at a competitive cost. The physical characteristics of these powders – bulk properties and those of the individual metal particles – define their performance and are closely controlled during manufacture. Packing density and flowability are key bulk properties and are directly, though not exclusively, influenced by particle size. Accordingly, it is vital to identify analytical tools that can reliably set size specifications for metal powders, to validate quality and manage their use. Sieving has long been a favoured technique for routine particle sizing. However, it also has many limitations that are addressed by laser diffraction. In this article Dr Sarennah Longworth-Cook and Parminder Singh explore the importance of metal powder particle size, and compare the value of sieving and laser diffraction within this context.

Productos:
Mastersizer 3000E
Fecha:
August 14 2018
Idioma:
English
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HiPer Small Spot Mapping is the latest addition to the Zetium platform and its SumXcore technology - an integration of WDXRF, EDXRF and XRD.

Productos:
Zetium
Fecha:
August 13 2018
Idioma:
English
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The data in this application note demonstrates that the Zetium with HiPer Small Spot Mapping can perform fast elemental small spot analysis and mapping. Such analyses contribute to a better understanding of the reaction kinetics of cement, mortar and concrete and is an ideal tool for materials research and production process troubleshooting.

Productos:
Zetium
Fecha:
August 9 2018
Idioma:
English
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The most common approach for measuring viscoelastic properties using a rotational rheometer is to perform small amplitude oscillatory shear (SAOS) testing within the samples linear viscoelastic region (LVER). An alternative approach for obtaining time dependent viscoelastic information is by means of a creep test in which a constant and unidirectional shear stress is applied to the sample and the resultant shear strain measured with time. While creep and oscillatory tests, and the results generated, are often considered independently they are in fact intrinsically linked. As with spectroscopic techniques such as NMR the time domain data can be transformed to the frequency domain using mathematical procedures such as the Fourier transform or equivalent algebraic procedures. One such algebraic procedure is based on an approach widely used in the field of microrheology for converting the mean square displacement to complex modulus which has also been adapted for converting creep compliance data also. In this technical note we demonstrate how such an approach can be used to generate comparable data to oscillatory testing but in a fraction of the time.

Productos:
Kinexus lab+
Fecha:
August 7 2018
Idioma:
English
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Fusion is a proven and reliable technique to prepare samples for X-ray fluorescence (XRF) analysis, but many laboratory technicians still struggle to obtain accurate and reproducible analytical results with this method. We can address this issue by identifying and eliminating potential root causes that impact final analytical results..

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