Next Article in Journal / Special Issue
Evolution of Calcareous Deposits and Passive Film on 304 Stainless Steel with Cathodic Polarization in Sea Water
Previous Article in Journal
Design and Preparation of a Micro-Pyramid Structured Thin Film for Broadband Infrared Antireflection
Previous Article in Special Issue
Electrodeposition of a Pd-Ni/TiO2 Composite Coating on 316L SS and Its Corrosion Behavior in Hot Sulfuric Acid Solution
Open AccessArticle

Effect of Annealing Treatment on Microstructure and Properties of Cr-Coatings Deposited on AISI 5140 Steel by Brush-Plating

1
College of Material Science and Engineering, Chongqing University of Technology, Chongqing 400054, China
2
Chongqing Municipal Key Laboratory of Institutions of Higher Education for Mould Technology, Chongqing 400054, China
3
Faculty of Materials and Energy, Southwest University, Chongqing 400715, China
4
Department of Mechanical and Materials Engineering, Queen’s University, 60 Union Street, Kingston, ON K7L3N6, Canada
*
Authors to whom correspondence should be addressed.
Coatings 2018, 8(5), 193; https://doi.org/10.3390/coatings8050193
Received: 1 May 2018 / Revised: 15 May 2018 / Accepted: 17 May 2018 / Published: 21 May 2018
(This article belongs to the Special Issue Advanced Coatings for Corrosion Protection in Extreme Environments)
  |  
PDF [4817 KB, uploaded 21 May 2018]
  |  

Abstract

Cr-coating was deposited on AISI 5140 steel by electro brush-plating, followed by annealing treatment at different temperatures, from 300 to 1100 °C. The microstructure evolution of the Cr-coating was characterized by backscattered electron imaging (BSEI) and energy dispersive spectrometry (EDS). The results show that the brush-plated sample has a nodular shaped microstructure, which is very stable at 300 °C of annealing. At 500 °C of annealing, the constitution of the microstructure changes from nodules to grains. As the annealing temperature further increases, the grains grow significantly. When the temperature reaches 1100 °C, a Cr-Fe solid-solution layer is formed within the original pure Cr-coatings. With increasing annealing temperature, the number of micro-cracks in the coating increases first and then decreases, reaching a maximum at 500 °C. The hardness and wear-resistance of the coating are improved when the annealing temperature increases to 1100 °C, owing to the decrease of micro-cracks that formed during brush-plating. View Full-Text
Keywords: Cr-coating; brush-plating; AISI 5140 steel; annealing behavior; wear resistance Cr-coating; brush-plating; AISI 5140 steel; annealing behavior; wear resistance
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

Hu, J.; Jiang, J.; Li, H.; Yang, X.; Xu, H.; Jin, Y.; Ma, C.; Dong, Q.; Guo, N. Effect of Annealing Treatment on Microstructure and Properties of Cr-Coatings Deposited on AISI 5140 Steel by Brush-Plating. Coatings 2018, 8, 193.

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