Home FOR AUTHORS Kovove Materialy-Metallic Materials 2014 Metallic Materials Vol. 52 (2014), no. 2, pp.107-112

Journal info

Select Journal







Webshop Cart

Your Cart is currently empty.

Info: Your browser does not accept cookies. To put products into your cart and purchase them you need to enable cookies.

Metallic Materials Vol. 52 (2014), no. 2, pp.107-112

Title: Boriding kinetics of pure cobalt
Author: A. CALIK, M. S. KARAKAŞ, N. UÇAR, F. ÜNÜVAR

Abstract: Kinetics of boride layers and hardness of pure cobalt (Co) have been investigated. Powder pack boriding method was carried out at 1173 and 1273 K for 1, 3 and 6 h. X-ray diffraction analysis of boride layers on the surface of pure Co revealed the existence of CoB and Co2B phases. The growth rate constant and activation energy for the boride layer were determined. The obtained results show that although the boride layer thickness increases with the increasing boriding temperature and time, these parameters have no significant effect on the hardness of the boride layer or the matrix. A decrease in the value of hardness moving from the boride layer to main structure was observed. In addition, the obtained hardness values on the boride layer at some boride parameters show a hardness anomaly due to structural defects or different type of the borides.

Keywords: boronizing, powder pack, boride kinetics, activation energy, hardness
Year: 2014, Volume: 52, Issue: 2 Page From: 107, Page To: 112
doi:10.4149/km_2014_2_107


download file



© AEPress s.r.o
Copyright notice: For any permission to reproduce, archive or otherwise use the documents in the ELiS, please contact AEP.