Tampere University of Technology

TUTCRIS Research Portal

Novel Online Diagnostic Analysis for In-Flight Particle Properties in Cold Spraying

Research output: Contribution to journalArticleScientificpeer-review

Standard

Novel Online Diagnostic Analysis for In-Flight Particle Properties in Cold Spraying. / Koivuluoto, Heli; Matikainen, Ville; Larjo, Jussi; Vuoristo, Petri.

In: Journal of Thermal Spray Technology, Vol. 27, No. 3, 2018, p. 423–432.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Koivuluoto, H, Matikainen, V, Larjo, J & Vuoristo, P 2018, 'Novel Online Diagnostic Analysis for In-Flight Particle Properties in Cold Spraying', Journal of Thermal Spray Technology, vol. 27, no. 3, pp. 423–432. https://doi.org/10.1007/s11666-018-0685-3

APA

Vancouver

Author

Koivuluoto, Heli ; Matikainen, Ville ; Larjo, Jussi ; Vuoristo, Petri. / Novel Online Diagnostic Analysis for In-Flight Particle Properties in Cold Spraying. In: Journal of Thermal Spray Technology. 2018 ; Vol. 27, No. 3. pp. 423–432.

Bibtex - Download

@article{e5fb19c01a2f4e8d88df05e52c721385,
title = "Novel Online Diagnostic Analysis for In-Flight Particle Properties in Cold Spraying",
abstract = "In cold spraying, powder particles are accelerated by preheated supersonic gas stream to high velocities and sprayed on a substrate. The particle velocities depend on the equipment design and process parameters, e.g., on the type of the process gas and its pressure and temperature. These, in turn, affect the coating structure and the properties. The particle velocities in cold spraying are high, and the particle temperatures are low, which can, therefore, be a challenge for the diagnostic methods. A novel optical online diagnostic system, HiWatch HR, will open new possibilities for measuring particle in-flight properties in cold spray processes. The system employs an imaging measurement technique called S-PTV (sizing-particle tracking velocimetry), first introduced in this research. This technique enables an accurate particle size measurement also for small diameter particles with a large powder volume. The aim of this study was to evaluate the velocities of metallic particles sprayed with HPCS and LPCS systems and with varying process parameters. The measured in-flight particle properties were further linked to the resulting coating properties. Furthermore, the camera was able to provide information about variations during the spraying, e.g., fluctuating powder feeding, which is important from the process control and quality control point of view.",
keywords = "cold spraying, diagnostics, in-flight properties, particle size, particle velocity",
author = "Heli Koivuluoto and Ville Matikainen and Jussi Larjo and Petri Vuoristo",
year = "2018",
doi = "10.1007/s11666-018-0685-3",
language = "English",
volume = "27",
pages = "423–432",
journal = "Journal of Thermal Spray Technology",
issn = "1059-9630",
publisher = "ASM International",
number = "3",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Novel Online Diagnostic Analysis for In-Flight Particle Properties in Cold Spraying

AU - Koivuluoto, Heli

AU - Matikainen, Ville

AU - Larjo, Jussi

AU - Vuoristo, Petri

PY - 2018

Y1 - 2018

N2 - In cold spraying, powder particles are accelerated by preheated supersonic gas stream to high velocities and sprayed on a substrate. The particle velocities depend on the equipment design and process parameters, e.g., on the type of the process gas and its pressure and temperature. These, in turn, affect the coating structure and the properties. The particle velocities in cold spraying are high, and the particle temperatures are low, which can, therefore, be a challenge for the diagnostic methods. A novel optical online diagnostic system, HiWatch HR, will open new possibilities for measuring particle in-flight properties in cold spray processes. The system employs an imaging measurement technique called S-PTV (sizing-particle tracking velocimetry), first introduced in this research. This technique enables an accurate particle size measurement also for small diameter particles with a large powder volume. The aim of this study was to evaluate the velocities of metallic particles sprayed with HPCS and LPCS systems and with varying process parameters. The measured in-flight particle properties were further linked to the resulting coating properties. Furthermore, the camera was able to provide information about variations during the spraying, e.g., fluctuating powder feeding, which is important from the process control and quality control point of view.

AB - In cold spraying, powder particles are accelerated by preheated supersonic gas stream to high velocities and sprayed on a substrate. The particle velocities depend on the equipment design and process parameters, e.g., on the type of the process gas and its pressure and temperature. These, in turn, affect the coating structure and the properties. The particle velocities in cold spraying are high, and the particle temperatures are low, which can, therefore, be a challenge for the diagnostic methods. A novel optical online diagnostic system, HiWatch HR, will open new possibilities for measuring particle in-flight properties in cold spray processes. The system employs an imaging measurement technique called S-PTV (sizing-particle tracking velocimetry), first introduced in this research. This technique enables an accurate particle size measurement also for small diameter particles with a large powder volume. The aim of this study was to evaluate the velocities of metallic particles sprayed with HPCS and LPCS systems and with varying process parameters. The measured in-flight particle properties were further linked to the resulting coating properties. Furthermore, the camera was able to provide information about variations during the spraying, e.g., fluctuating powder feeding, which is important from the process control and quality control point of view.

KW - cold spraying

KW - diagnostics

KW - in-flight properties

KW - particle size

KW - particle velocity

U2 - 10.1007/s11666-018-0685-3

DO - 10.1007/s11666-018-0685-3

M3 - Article

VL - 27

SP - 423

EP - 432

JO - Journal of Thermal Spray Technology

JF - Journal of Thermal Spray Technology

SN - 1059-9630

IS - 3

ER -