Next Article in Journal
Synthesis of a Novel Polyethoxysilsesquiazane and Thermal Conversion into Ternary Silicon Oxynitride Ceramics with Enhanced Thermal Stability
Previous Article in Journal
Structurally Oriented Nano-Sheets in Co Thin Films: Changing Their Anisotropic Physical Properties by Thermally-Induced Relaxation
Open AccessArticle

Anneal-Hardening Behavior of Cr-Fe-C Alloy Deposits Prepared in a Cr3+-Based Bath with Fe2+ Ions

1
Department of Mechanical Engineering, Chang Gung University, Taoyuan 333, Taiwan
2
Department of Mechanical Engineering, Ming Chi University of Technology, New Taipei 243, Taiwan
3
Bone and Joint Research Center, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
*
Author to whom correspondence should be addressed.
Materials 2017, 10(12), 1392; https://doi.org/10.3390/ma10121392
Received: 28 September 2017 / Revised: 26 November 2017 / Accepted: 27 November 2017 / Published: 5 December 2017
Cr-Fe-C alloy deposits were successfully prepared on high-carbon tool steel in a Cr3+-based electroplating bath containing Fe2+ ions and suitable complex agents. A Cr-based alloy deposit was obtained with an electroplating current density higher than 25 Adm−2, and a Fe-based alloy deposit was obtained using a current density of 20 Adm−2. Following electroplating, these alloy deposited specimens were annealed via rapid thermal annealing (RTA) at 500 °C for different periods up to 30 s. The experimental results show that Cr- and Fe-based alloy deposits could be significantly hardened after RTA at 500 °C for a few seconds. The maximum hardness was that of the Cr-Fe-C alloy deposit annealed at 500 °C for 10 s. The maximum hardness of 1205 Hv was detected from the annealed Cr-based alloy deposit prepared with 30 ASD. The hardening mechanism of annealed Cr- and Fe-based alloy deposits is attributed to the precipitation of C-related membranes. The hardness values of the annealed Cr- and Fe-based alloy deposits increase with the increasing degree of crystallization of the C-related membranes. View Full-Text
Keywords: trivalent Cr electroplating; annealing; microstructure; hardening mechanism trivalent Cr electroplating; annealing; microstructure; hardening mechanism
Show Figures

Figure 1

MDPI and ACS Style

Huang, C.A.; Chen, J.Y.; Wang, H.; Lai, P.L. Anneal-Hardening Behavior of Cr-Fe-C Alloy Deposits Prepared in a Cr3+-Based Bath with Fe2+ Ions. Materials 2017, 10, 1392.

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.

Article Access Map by Country/Region

1
Back to TopTop