Publication detail

In-Flight Temperature And Velocity of Powder Particles of Plasma Sprayed TiO2

ČÍŽEK, J. KHOR, K. DLOUHÝ, I.

Original Title

In-Flight Temperature And Velocity of Powder Particles of Plasma Sprayed TiO2

English Title

In-Flight Temperature And Velocity of Powder Particles of Plasma Sprayed TiO2

Type

journal article - other

Language

en

Original Abstract

This paper relates to the in-flight temperature and velocity of TiO2 particles, an integral part of the systematic research on atmospheric plasma spraying of the material. Initial powder feedstock (32-45 um, 100% rutile phase) was introduced into the plasma jet. Six parameters were selected to represent the versatility of the plasma system and their respective influences were determined according to basic One-at-a-time and advanced Taguchi design of experiments combined with analysis of variance analytical tool. It was found that the measured temperatures varied from 2121 K to 2830 K (33% variation), while the velocities of the particles altered from 127 m/s to 243 m/s (91% variation). Gun net power was detected as the most influential factor with respect to the velocity of the TiO2 particles (an increase of 8.4 m/s per 1 kW increase in net power). Spray distance was determined to have a major impact on the in-flight temperature (a decrease of 10 mm in spray distance corresponds to a drop of 36 K). A significant decrease in both characteristics was detected for an increasing amount of powder entering the plasma jet: a drop of 7.1 K and 1.4 m/s was recorded per every +1 g/min of TiO2 powder.

English abstract

This paper relates to the in-flight temperature and velocity of TiO2 particles, an integral part of the systematic research on atmospheric plasma spraying of the material. Initial powder feedstock (32-45 um, 100% rutile phase) was introduced into the plasma jet. Six parameters were selected to represent the versatility of the plasma system and their respective influences were determined according to basic One-at-a-time and advanced Taguchi design of experiments combined with analysis of variance analytical tool. It was found that the measured temperatures varied from 2121 K to 2830 K (33% variation), while the velocities of the particles altered from 127 m/s to 243 m/s (91% variation). Gun net power was detected as the most influential factor with respect to the velocity of the TiO2 particles (an increase of 8.4 m/s per 1 kW increase in net power). Spray distance was determined to have a major impact on the in-flight temperature (a decrease of 10 mm in spray distance corresponds to a drop of 36 K). A significant decrease in both characteristics was detected for an increasing amount of powder entering the plasma jet: a drop of 7.1 K and 1.4 m/s was recorded per every +1 g/min of TiO2 powder.

Keywords

plasma spray, in-flight properties, TiO2, rutile, Taguchi design, titania

RIV year

2013

Released

25.10.2013

Publisher

Springer

Pages from

1320

Pages to

1327

Pages count

8

URL

Full text in the Digital Library

Documents

BibTex


@article{BUT101086,
  author="Jan {Čížek} and Khiam Aik {Khor} and Ivo {Dlouhý}",
  title="In-Flight Temperature And Velocity of Powder Particles of Plasma Sprayed TiO2",
  annote="This paper relates to the in-flight temperature and velocity of TiO2 particles, an integral part of the systematic research on atmospheric plasma spraying of the material. Initial powder feedstock (32-45 um, 100% rutile phase) was introduced into the plasma jet. Six parameters were selected to represent the versatility of the plasma system and their respective influences were determined according to basic One-at-a-time and advanced Taguchi design of experiments combined with analysis of variance analytical tool.

It was found that the measured temperatures varied from 2121 K to 2830 K (33% variation), while the velocities of the particles altered from 127 m/s to 243 m/s (91% variation). Gun net power was detected as the most influential factor with respect to the velocity of the TiO2 particles (an increase of 8.4 m/s per 1 kW increase in net power). Spray distance was determined to have a major impact on the in-flight temperature (a decrease of 10 mm in spray distance corresponds to a drop of 36 K). A significant decrease in both characteristics was detected for an increasing amount of powder entering the plasma jet: a drop of 7.1 K and 1.4 m/s was recorded per every +1 g/min of TiO2 powder.",
  address="Springer",
  chapter="101086",
  doi="10.1007/s11666-013-9993-9",
  institution="Springer",
  number="8",
  volume="22",
  year="2013",
  month="october",
  pages="1320--1327",
  publisher="Springer",
  type="journal article - other"
}