Next Article in Journal
New Consolidant-Hydrophobic Treatment by Combining SiO2 Composite and Fluorinated Alkoxysilane: Application on Decayed Biocalcareous Stone from an 18th Century Cathedral
Next Article in Special Issue
Superconducting Niobium Coatings Deposited on Spherical Substrates in Molten Salts
Previous Article in Journal
The Influence of Oxygen Flow Ratio on the Optoelectronic Properties of p-Type Ni1−xO Films Deposited by Ion Beam Assisted Sputtering
Previous Article in Special Issue
Alkoxylated β-Naphthol as an Additive for Tin Plating from Chloride and Methane Sulfonic Acid Electrolytes
Open AccessArticle

The Gain of Low Thermal Expansivity via Phase Transition in Electroformed Invar

Department of Materials Science and Metallurgical Engineering, Sunchon National University, Suncheon 57922, Korea
*
Author to whom correspondence should be addressed.
Coatings 2018, 8(5), 169; https://doi.org/10.3390/coatings8050169
Received: 5 March 2018 / Revised: 24 April 2018 / Accepted: 1 May 2018 / Published: 2 May 2018
(This article belongs to the Special Issue Thin Films and Patterned Structures by Electrochemical Methods)
  |  
PDF [2797 KB, uploaded 2 May 2018]
  |  

Abstract

In the organic light-emitting diode display industry, Invar exhibits anomalously low thermal expansivity and is, therefore, used as a material for fine metal masks, which are necessary components for the evaporation process of diode materials. We present an electroforming method for fabricating Fe-Ni alloys with a coefficient of thermal expansion lower than that of conventional Invar. The principle of controlling the thermal expansivity of electroformed Fe-Ni alloys is clarified in terms of the behavior of the phases constituting them. The cause of the Invar anomalies, which has not yet been fully elucidated, is explained by combining the Weiss model based on the electron configurations of Fe atoms and a model that we propose based on atom configurations. View Full-Text
Keywords: electroforming; Fe-Ni alloy; Invar; fine metal mask; thermal expansivity electroforming; Fe-Ni alloy; Invar; fine metal mask; thermal expansivity
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

Park, Y.B.; Kim, I.G. The Gain of Low Thermal Expansivity via Phase Transition in Electroformed Invar. Coatings 2018, 8, 169.

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