Next Article in Journal
Inkjet-Printed Chemical Solution Y2O3 Layers for Planarization of Technical Substrates
Next Article in Special Issue
Mechanical and Thermal Properties of Epoxy Composites Containing Zirconium Oxide Impregnated Halloysite Nanotubes
Previous Article in Journal
Modified Starch-Chitosan Edible Films: Physicochemical and Mechanical Characterization
Previous Article in Special Issue
Identification of Intermetallic Compounds and Its Formation Mechanism in Boron Steel Hot-Dipped in Al-7 wt.% Mn Alloy
Article Menu
Issue 12 (December) cover image

Export Article

Open AccessArticle
Coatings 2017, 7(12), 225; https://doi.org/10.3390/coatings7120225

In-Situ Heat Treatment Study on the Nanocrystalline Cr2O3 Film Using an Environmental Scanning Electron Microscope

1
Tianjin Key Laboratory of High Speed Cutting and Precision Manufacturing, Tianjin University of Technology and Education, Tianjin 300222, China
2
Department of Mechanical Engineering, Lund University, Box 118, SE-22100 Lund, Sweden
3
Global Frontier R&D Center for Hybrid Interface Materials, Pusan National University, Busan 609-735, Korea
4
Tianjin Shuangxin Machinery Manufacturing Co., Tianjin 300480, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Mark D. Soucek
Received: 9 November 2017 / Revised: 5 December 2017 / Accepted: 7 December 2017 / Published: 8 December 2017
(This article belongs to the Special Issue Hybrid Surface Coatings & Process (Selected Papers from HyMaP 2017))
Full-Text   |   PDF [4682 KB, uploaded 8 December 2017]   |  

Abstract

In this work, the surface morphology changes of nanocrystalline Cr2O3 film deposited on Si wafer during the heating process were observed in-situ by means of an environmental scanning electron microscope (ESEM). The Cr2O3 film cracked at high temperature due to the cause of thermal stress; the corresponding crack area percentages on the film surface were real-time evaluated using image analysis software (SISC IAS V8.0) based on the principle of gray value analysis. In the meantime, the effects of the heating temperature on the crack area percentage, phase constituents, and grain size of the Cr2O3 film were also studied in detail. The results showed that the percentage of crack area on film surface first increased with the heating temperature rise, and reached the maximum value at around 980 °C, and then gradually declined again. The above trend is closely related to the changes of thermal stress and grain growth in film. In addition, the heat treatment also had a strong influence on the grain size of the Cr2O3 film. View Full-Text
Keywords: Cr2O3 film; arc ion plating; in-situ observation; crack area percentage; ESEM; grain size Cr2O3 film; arc ion plating; in-situ observation; crack area percentage; ESEM; grain size
Figures

Graphical abstract

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 (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Wang, T.-G.; Dong, Y.; Liu, Y.; Iyengar, S.; Kim, K.H.; Yang, Z. In-Situ Heat Treatment Study on the Nanocrystalline Cr2O3 Film Using an Environmental Scanning Electron Microscope. Coatings 2017, 7, 225.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Coatings EISSN 2079-6412 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top