• Journal of Powder Materials
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• v.27 no.6
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• pp.509-519
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• 2020

A well-established characterization method is required in powder bed fusion (PBF) metal additive manufacturing, where metal powder is used. The characterization methods from the traditional powder metallurgy process are still being used. However, it is necessary to develop advanced methods of property evaluation with the advances in additive manufacturing technology. In this article, the characterization methods of powders for metal PBF are reviewed, and the recent research trends are introduced. Standardization status and specifications for metal powder for the PBF process which published by the ISO, ASTM, and MPIF are also covered. The establishment of powder characterization methods are expected to contribute to the metal powder industry and the advancement of additive manufacturing technology through the creation of related databases.

• Journal of Powder Materials
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• v.19 no.1
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• pp.67-71
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• 2012

The present paper gives an overview about the Atom Probe Tomography technique and its application to powder materials. The preparation of needle-shaped Atom Probe specimens from a single powder particle using focused-ion-beam milling is described. Selected experimental data on mechanically alloyed (and sintered) powder materials are presented, giving insight into the atomic-scale elemental redistribution occurring under powder metallurgical processing.

• Proceedings of the Korean Powder Metallurgy Institute Conference
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• 2000.04a
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• pp.54-54
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• 2000

• Proceedings of the Korean Powder Metallurgy Institute Conference
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• 2003.04a
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• pp.49-49
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• 2003

• Proceedings of the Korean Powder Metallurgy Institute Conference
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• 2003.04a
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• pp.52-52
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• 2003

• Proceedings of the Korean Powder Metallurgy Institute Conference
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• 2000.11a
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• pp.13-14
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• 2000

• Proceedings of the Korean Powder Metallurgy Institute Conference
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• 1998.04b
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• pp.14-14
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• 1998

• Proceedings of the Korean Powder Metallurgy Institute Conference
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• 2002.04b
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• pp.39-40
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• 2002

• Proceedings of the Korean Powder Metallurgy Institute Conference
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• 2000.11a
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• pp.45-45
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• 2000

• Journal of Powder Materials
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• v.12 no.3
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• pp.220-224
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• 2005

Boehmite (AlOOH) powder with uniform pore size and high specific surface area were synthesized via sol-gel method using metal salts, $Al_2(SO_4)_3$ and $NaAlO_2$. During these synthetic process, the effects of the aging time were investigated to determine the optimal synthetic conditions of boehmite. X-ray diffraction, BET, Raman/IR, and scanning electron microscopy techniques were used for the characterization of the powder. Boehmite gel synthesized at the first stage of the experimental procedure transformed to crystalline boehmite phase after aging for 6 hours. The specific surface area of the crystalline boehmite showed a maximum value, $350m^2/g$, at aging time of 72 hours. The pore size of the boehmite increased with increasing aging time and the boehmite with average pore diameter of 3.6 nm was obtained at aging time of 96 hours.