Paper Title:
Covering Steel Surface with Carbon Black by CO2 Laser
  Abstract

This study investigate the laser surface hardening in tool steel, avoiding the high reflectivity of the metal to the CO2 radiation by covering the surface sample with black carbon. Hardening process using graphite was effective in many works in the word, although, the particles size of graphite powder was in the range of some micrometers. In order to reduce the particle size, the carbon black was used in the laser thermal treatment of 4340 steel. The microhardness change to 850HV, compared to the substrate of 250HV and the friction coefficient ranged 0.2 and 0.3, because of the covered surface by carbon black. These thin coating of carbon black reduced the wear rate near to a hundred in comparison to the surface without carbon coating.

  Info
Periodical
Materials Science Forum (Volumes 660-661)
Edited by
Lucio Salgado and Francisco Ambrozio Filho
Pages
249-252
DOI
10.4028/www.scientific.net/MSF.660-661.249
Citation
G. de Vasconcelos, G. N.P. da Costa, D. C. Chagas, C. B. Mello, E. F. Antunes, "Covering Steel Surface with Carbon Black by CO2 Laser", Materials Science Forum, Vols. 660-661, pp. 249-252, 2010
Online since
October 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: X.P. Zhu, Tsuneo Suzuki, Hisayuki Suematsu, Wei Hua Jiang, Koichi Niihara
Abstract:Nitriding of titanium was achieved in a vacuum of ~2×10-2 Pa by applying intense pulsed ion beam (IPIB) irradiation. Various phases including...
17
Authors: Di Liu, Shu Lin Wang, Yan Chen Du, Hai Chao Li, Yin Zhang Sun
Chapter 1: Vibration Engineering
Abstract:In cantilever beam system, through the experimental method to study vibration reduction mechanism of particle collision damper. The filling...
176
Authors: A. Kosyachkov, L. Wang, J. Anzellotti, R. Hallock, C. Hodgson
Chapter 6: Devices
Abstract:Abstract. Microstructural, optical and mechanical properties of oxide and fluoride films are examined. Superior optical quality, durability...
345
Authors: Fatin Syazana Jamaludin, Mohd Faizul Mohd Sabri
Abstract:The aspect ratio of microholes milled on silicon by FIB/SEM milling was investigated with various beam currents and initial depths of mill....
436
Authors: Chen Ying Wang, Shu Ming Yang, Qi Jing Lin, Zhuang De Jiang
Chapter 2: Sensors, Measurement and Detection
Abstract:The accuracy and traceability of measurement at nano-scale are directly related to nano-fabrication. Nanostep is typical structure, so the...
842