Article
Version 1
Preserved in Portico This version is not peer-reviewed
Effects of Al2O3 Addition on the Microstructure and Properties of CoCr Alloys
Version 1
: Received: 1 September 2019 / Approved: 2 September 2019 / Online: 2 September 2019 (17:28:40 CEST)
A peer-reviewed article of this Preprint also exists.
Hong, Q.; Bai, P.; Wang, J. Effects of Al2O3 Addition on the Microstructure and Properties of CoCr Alloys. Metals 2019, 9, 1074. Hong, Q.; Bai, P.; Wang, J. Effects of Al2O3 Addition on the Microstructure and Properties of CoCr Alloys. Metals 2019, 9, 1074.
Abstract
In typical Cobalt-chromium (CoCr) alloys powders, aluminum oxide (Al2O3) powder can be added. In the present study, we successfully prepared alloyed samples of various powder ratios by laser cladding, and analyzed their microstructure and carbide structural characteristics, including microhardness, biological properties, morphology (using scanning electron microscopy), and crystal structure (using X-ray powder diffraction). Elemental distribution was also determined by energy-dispersive X-ray spectral analysis. The results showed that Al2O3 addition caused the alloy to change from slender columnar crystals to columnar grains similar, to equiaxed grains. In addition, Al2O3 agglomeration zones appeared, and carbide structures were altered. The mechanism of the observed performance changes was also analyzed.
Keywords
CoCr alloy; microstructure; powder modified; Al2O3
Subject
Chemistry and Materials Science, Biomaterials
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Comments (0)
We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.
Leave a public commentSend a private comment to the author(s)
* All users must log in before leaving a comment