Publication detail

Durability of Amorphous and Crystalline BMAS Thermal Barrier Coatings Produced by Plasma Spraying

ČELKO, L. JECH, D. DVOŘÁK, K. ŠULÁK, I. KLAKURKOVÁ, L. OBRTLÍK, K.

Original Title

Durability of Amorphous and Crystalline BMAS Thermal Barrier Coatings Produced by Plasma Spraying

Type

conference paper

Language

English

Original Abstract

Barium-Magnesium-Aluminium-Silicate (BMAS) powder was manufactured from the mixture of compounds (15 wt.% BaO, 7wt.% MgO, 28 wt.% Al2O3 and wt. % 50 SiO2) by means of annealing at the temperature of 1200°C for 3 hours in a furnace. Resulting powder was crushed into the fraction of 20 – 45 micrometers. Thermal barrier coating system consisted of CoNiCrAlY (bond coat) and BMAS (top coat) was sprayed by atmospheric plasma spray (APS) technique onto the nickel-based superalloy substrate. The BMAS top coat in as-sprayed state was found to be a mixture of amorphous and crystalline Al2O3, SiO2 and MgO phases and therefore some of the samples were crystallized via annealing at 1200°C for 4 hours, 1000°C for 10 hours in furnace or subjected to several passes of colder end of plasma jet formed in APS gun.

Keywords

powder processing; plasma spraying; thermal barrier coatings; burner-rig test; coating failure

Authors

ČELKO, L.; JECH, D.; DVOŘÁK, K.; ŠULÁK, I.; KLAKURKOVÁ, L.; OBRTLÍK, K.

Released

1. 1. 2017

Publisher

Trans Tech Publications

Location

Switzerland

ISBN

978-3-03835-626-4

Book

Materials Structure & Micromechanics of Fracture VIII

Edition

Solid State Phenomena

ISBN

1012-0394

Periodical

Solid State Phenomena

Year of study

258

Number

1

State

Swiss Confederation

Pages from

383

Pages to

386

Pages count

4

URL

http://www.scientific.net/SSP.258.383

BibTex

@inproceedings{BUT130364,
  author="Ladislav {Čelko} and David {Jech} and Karel {Dvořák} and Ivo {Šulák} and Lenka {Klakurková} and Karel {Obrtlík}",
  title="Durability of Amorphous and Crystalline BMAS Thermal Barrier Coatings Produced by Plasma Spraying",
  booktitle="Materials Structure & Micromechanics of Fracture VIII",
  year="2017",
  series="Solid State Phenomena",
  journal="Solid State Phenomena",
  volume="258",
  number="1",
  pages="383--386",
  publisher="Trans Tech Publications",
  address="Switzerland",
  doi="10.4028/www.scientific.net/SSP.258.383",
  isbn="978-3-03835-626-4",
  issn="1012-0394",
  url="http://www.scientific.net/SSP.258.383"
}