Improving Powder Characteristics by Surface Modification Using Atomic Layer Deposition

Cosima Hirschberg; Nikolaj Sølvkær Jensen; Johan Boetker; Anders Østergaard Madsen; Tommi O. Kääriäinen; Marja-Leena Kääriäinen; Pekka Hoppu; Steven M. George; Matti Murtomaa; Changquan Calvin Sun; Jens Risbo; Jukka Rantanen

doi:10.1021/acs.oprd.9b00247

Improving Powder Characteristics by Surface Modification Using Atomic Layer Deposition

Cosima Hirschberg, Nikolaj Sølvkær Jensen, Johan Boetker, Anders Østergaard Madsen, Tommi O. Kääriäinen, Marja-Leena Kääriäinen, Pekka Hoppu, Steven M. George, Matti Murtomaa, Changquan Calvin Sun, Jens Risbo, Jukka Rantanen

3 Citations (Scopus)

Abstract

The particulate properties of a material after primary manufacturing have a large impact on the secondary manufacturing processes. Especially, powder characteristics leading to poor flowability are critical and need to be controlled at the late steps of primary operations. The surface properties of the primary particles are hereby one of the determining factors for the behavior of particulate systems. Materials with different particulate properties were coated using atomic layer deposition (ALD) to apply an ultrathin film of TiO₂ on the primary particles. The presence of TiO₂ coating was confirmed using X-ray photoelectron spectroscopy. Five TiO₂ ALD layers on the particle surface were enough to quadruple the flowability of a partially crystalline material and to triple the flowability of an amorphous material. The coating process did not change the solid form of the materials and did not affect other critical characteristics related to the functionality of the materials. Altogether, the ALD coating of powders provides new possibilities as a scalable and potentially continuously operating process that can solve problems related to powder flowability during handling of bulk powders.

Original language	English
Journal	Organic Process Research & Development
Volume	23
Issue number	11
Pages (from-to)	2362-2368
ISSN	1083-6160
DOIs	https://doi.org/10.1021/acs.oprd.9b00247
Publication status	Published - 15 Nov 2019

Keywords

atomic layer deposition (ALD)
materials science
surface chemistry
particle coating
powder properties

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10.1021/acs.oprd.9b00247

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Hirschberg, C., Jensen, N. S., Boetker, J., Madsen, A. Ø., Kääriäinen, T. O., Kääriäinen, M-L., Hoppu, P., George, S. M., Murtomaa, M., Sun, C. C., Risbo, J., & Rantanen, J. (2019). Improving Powder Characteristics by Surface Modification Using Atomic Layer Deposition. Organic Process Research & Development, 23(11), 2362-2368. https://doi.org/10.1021/acs.oprd.9b00247

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title = "Improving Powder Characteristics by Surface Modification Using Atomic Layer Deposition",

abstract = "The particulate properties of a material after primary manufacturing have a large impact on the secondary manufacturing processes. Especially, powder characteristics leading to poor flowability are critical and need to be controlled at the late steps of primary operations. The surface properties of the primary particles are hereby one of the determining factors for the behavior of particulate systems. Materials with different particulate properties were coated using atomic layer deposition (ALD) to apply an ultrathin film of TiO2 on the primary particles. The presence of TiO2 coating was confirmed using X-ray photoelectron spectroscopy. Five TiO2 ALD layers on the particle surface were enough to quadruple the flowability of a partially crystalline material and to triple the flowability of an amorphous material. The coating process did not change the solid form of the materials and did not affect other critical characteristics related to the functionality of the materials. Altogether, the ALD coating of powders provides new possibilities as a scalable and potentially continuously operating process that can solve problems related to powder flowability during handling of bulk powders.",

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author = "Cosima Hirschberg and Jensen, {Nikolaj S{\o}lvk{\ae}r} and Johan Boetker and Madsen, {Anders {\O}stergaard} and K{\"a}{\"a}ri{\"a}inen, {Tommi O.} and Marja-Leena K{\"a}{\"a}ri{\"a}inen and Pekka Hoppu and George, {Steven M.} and Matti Murtomaa and Sun, {Changquan Calvin} and Jens Risbo and Jukka Rantanen",

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doi = "10.1021/acs.oprd.9b00247",

language = "English",

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T1 - Improving Powder Characteristics by Surface Modification Using Atomic Layer Deposition

AU - Hirschberg, Cosima

AU - Jensen, Nikolaj Sølvkær

AU - Boetker, Johan

AU - Madsen, Anders Østergaard

AU - Kääriäinen, Tommi O.

AU - Kääriäinen, Marja-Leena

AU - Hoppu, Pekka

AU - George, Steven M.

AU - Murtomaa, Matti

AU - Sun, Changquan Calvin

AU - Risbo, Jens

AU - Rantanen, Jukka

PY - 2019/11/15

Y1 - 2019/11/15

N2 - The particulate properties of a material after primary manufacturing have a large impact on the secondary manufacturing processes. Especially, powder characteristics leading to poor flowability are critical and need to be controlled at the late steps of primary operations. The surface properties of the primary particles are hereby one of the determining factors for the behavior of particulate systems. Materials with different particulate properties were coated using atomic layer deposition (ALD) to apply an ultrathin film of TiO2 on the primary particles. The presence of TiO2 coating was confirmed using X-ray photoelectron spectroscopy. Five TiO2 ALD layers on the particle surface were enough to quadruple the flowability of a partially crystalline material and to triple the flowability of an amorphous material. The coating process did not change the solid form of the materials and did not affect other critical characteristics related to the functionality of the materials. Altogether, the ALD coating of powders provides new possibilities as a scalable and potentially continuously operating process that can solve problems related to powder flowability during handling of bulk powders.

AB - The particulate properties of a material after primary manufacturing have a large impact on the secondary manufacturing processes. Especially, powder characteristics leading to poor flowability are critical and need to be controlled at the late steps of primary operations. The surface properties of the primary particles are hereby one of the determining factors for the behavior of particulate systems. Materials with different particulate properties were coated using atomic layer deposition (ALD) to apply an ultrathin film of TiO2 on the primary particles. The presence of TiO2 coating was confirmed using X-ray photoelectron spectroscopy. Five TiO2 ALD layers on the particle surface were enough to quadruple the flowability of a partially crystalline material and to triple the flowability of an amorphous material. The coating process did not change the solid form of the materials and did not affect other critical characteristics related to the functionality of the materials. Altogether, the ALD coating of powders provides new possibilities as a scalable and potentially continuously operating process that can solve problems related to powder flowability during handling of bulk powders.

KW - atomic layer deposition (ALD)

KW - materials science

KW - surface chemistry

KW - particle coating

KW - powder properties

U2 - 10.1021/acs.oprd.9b00247

DO - 10.1021/acs.oprd.9b00247

M3 - Journal article

SN - 1083-6160

VL - 23

SP - 2362

EP - 2368

JO - Organic Process Research and Development

JF - Organic Process Research and Development

IS - 11

ER -

Improving Powder Characteristics by Surface Modification Using Atomic Layer Deposition

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Keywords

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