Structure and properties of plasma-sprayed Sialon coatings

Journal Article · Mon Jun 01 04:00:00 EDT 1992 · Journal of Thermal Spray Technology; (United States)

DOI:https://doi.org/10.1007/BF02659016· OSTI ID:7165788

Sodeoka, S; Ueno, K; Hagiwara, Y; Kose, S ^[1]

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1. Government Industrial Research Institute, Osaka (Japan) Osaka Electronics and Communications University, (Japan)

Si(6-z)Al(z)O(z)N(8-z) where z = 1, 2, 3, or 4 was plasma sprayed in air, and the structure and properties of the coating were evaluated. Coatings of the Sialon could be produced when z = 3 or 4, whereas coatings were hardly formed for Sialon with z = 1 and 2. The relative density and the Vickers hardness of the Sialon coatings (z = 3 and 4) increased with an increase in plasma power. Elemental analysis and X-ray diffractometry revealed that Sialon partially decomposed during thermal spraying. Nitrogen gas addition to the secondary plasma gas was effective in suppressing this decomposition. 9 refs.

• OSTI ID: 7165788
• Journal Information: Journal of Thermal Spray Technology; (United States), Journal Name: Journal of Thermal Spray Technology; (United States) Vol. 1:2; ISSN 1059-9630; ISSN JTTEE5
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203 -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
COATINGS
COHERENT SCATTERING
CRYSTAL STRUCTURE
DEPOSITION
DIFFRACTION
ELEMENTS
GRAIN BOUNDARIES
MICROSTRUCTURE
NITRIDES
NITROGEN
NITROGEN COMPOUNDS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PLASMA ARC SPRAYING
PLASMA DENSITY
PNICTIDES
SCATTERING
SILICON COMPOUNDS
SILICON NITRIDES
SPRAY COATING
SPRAYED COATINGS
SURFACE COATING
VICKERS HARDNESS
X-RAY DIFFRACTION