Paper Title:
Microstructures and Properties of Laser Cladding Composite Coating of Nano-Y2O3/Co-Based Alloys
  Abstract

By using laser cladding technology, a nano-Y2O3/Co-based composite coating was prepared in the Ni-based alloys substrate with Nano-Y2O3 and cobalt based alloys powder. The microstructure, micro-hardness wear resistance of the composite coating were researched by scanning electron microscopy (SEM) and other testing methods. The results show that the micro-hardness of laser cladding is HV868, and the welded surfacing layer is only HV512. Wearing values are decreased by 25.6 mg of the surfacing layer to 0.5 mg of the laser cladding layer in the wear testing of 40 minutes. The wear resistance of laser cladding layer is 51 times of the the wear resistance of the surfacing layer using the Co-28Cr-4W-1C electrode. The microstructure of laser cladding layer consists of the fusion zone, the fine equiaxed dendrite zone and the coarse crystalline zone.

  Info
Periodical
Advanced Materials Research (Volumes 295-297)
Chapter
Chapter 1: Materials Properties
Edited by
Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu
Pages
1315-1318
DOI
10.4028/www.scientific.net/AMR.295-297.1315
Citation
S. L. Yang, F. G. Hu, Q. L. Lin, "Microstructures and Properties of Laser Cladding Composite Coating of Nano-Y2O3/Co-Based Alloys", Advanced Materials Research, Vols. 295-297, pp. 1315-1318, 2011
Online since
July 2011
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Price
$32.00
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