Published July 2018 | Version v1
Journal article Metadata-only

Impact of Si and B on the phase stability of cathodic arc evaporated Al0.70Cr0.30-based oxides

Creators

  • 1. Institute of Materials Science and Technology, TU Wien, Vienna (Austria)
  • 2. Christian Doppler Laboratory for Application Oriented Coating Development at the Institute of Materials Science and Technology, TU Wien, Vienna (Austria)
  • 3. Analytical Instrumentation Center, TU Wien, Vienna (Austria)

Description

Al0.70Cr0.30-, Al0.665Cr0.285B0.05-, and Al0.665Cr0.285Si0.05-based cathodic arc evaporated oxides were investigated with respect to their structural evolution during vacuum annealing. Unalloyed (Al0.69Cr0.31)2O3 crystallises with a mixed phase microstructure composed of corundum (α) and metastable cubic and γ-/θ-type phases. Alloying 5 at.% of B or Si to the cathodes results in significant grain refinement of the coatings and the suppression of the α-phase in as-deposited state. In addition, the thermally-induced phase transition from metastable into singe-phased α-structured coatings is effectively shifted from ~900 °C to 950 °C or 1150 °C, respectively.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.scriptamat.2018.04.018

Additional details

Identifiers

DOI
10.1016/j.scriptamat.2018.04.018;
PII
S1359646218302318;

Publishing Information

Journal Title
Scripta Materialia
Journal Volume
152
Journal Page Range
p. 107-111
ISSN
1359-6462
CODEN
SCMAF7

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
50057519
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ALUMINIUM; ANNEALING; BORON; CATHODES; CHROMIUM; COATINGS; CORUNDUM; GRAIN REFINEMENT; MICROSTRUCTURE; OXIDES; PHASE STABILITY; PHASE TRANSFORMATIONS; SILICON
Descriptors DEC
CHALCOGENIDES; ELECTRODES; ELEMENTS; HEAT TREATMENTS; METALS; MINERALS; OXIDE MINERALS; OXYGEN COMPOUNDS; SEMIMETALS; STABILITY; TRANSITION ELEMENTS

Optional Information

Copyright
Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.