Bonding Strength and Microstructure of Cermet/Cu-Based Alloy Composite Brazed Coatings

Abstract:

Article Preview

WC-TiC-Co cermet and CuZnNi alloy composite coatings were produced on mild steel by a high temperature inside-furnace brazing technique. The microstructure, phase constituents and interfacial diffusion behavior of cermet and Cu-based alloy were investigated by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM), electron probe microanalysis (EPMA) and X-ray diffraction. The tensile strength and wear property of composite coatings were also investigated. The results show that crème particles were not decomposed severely during the inside- furnace brazing process. The microstructure of the matrix is α and β phases. Diffusion occurred at the cermet/Cu-based alloy interface. The tensile strength of the composite coatings reached 240-300MPa, which depended on the brazing temperature and was far higher than that of the flame hardfacing layers. Cermet fracture was basically a brittle fracture in nature and matrix involves ductile fracture.

Info:

Periodical:

Key Engineering Materials (Volumes 297-300)

Edited by:

Young-Jin Kim, Dong-Ho Bae and Yun-Jae Kim

Pages:

154-159

DOI:

10.4028/www.scientific.net/KEM.297-300.154

Citation:

X. H. Wang et al., "Bonding Strength and Microstructure of Cermet/Cu-Based Alloy Composite Brazed Coatings ", Key Engineering Materials, Vols. 297-300, pp. 154-159, 2005

Online since:

November 2005

Export:

Price:

$35.00

[1] X.M. Zou: Rear Metal Cemented Carbide Vol. 3 (1995), p.11.

[2] X.H. Wang and Z.D. Zou: China Petroleum Machinery Vol. 9 (2001), p.41.

[3] S.G. Bailey and C.M. Perrott: Wear Vol. 29 (1974), p.117.

[4] M.A. Charles: Weld Design Fabrication Vol. 55 (1982), p.61.

[5] X.H. Wang, Y.J. Li, Z.D. Zou and X.M. Liu: Welding Technology Vol. 6 (1999), p.25.

[6] X.M. Zou: Cemented Carbide Vol. 8 (1995), p.183.

[7] D. Tu, S. Chang, C. Chao and C. Lin: J. Vac. Sci. Technol. A Vol. 3 (1985), p.2479.

[8] A. Karimi and Ch. Verdon: Surface and Coatings Technology Vol. 62 (1993), p.493.

[9] K.T. Kembaiyan and K. Keshava: Wear Vol. 186-187 (1995), p.487.

[10] Zh. Baosheng and M. Gasik Michael: Computational materials Science Vol. 25 (2002), p.264.

[11] I. Grimberg, B.Z. Weiss: B. Bouaifi, U. Draugelates and K. Soifer, Surface and Coatings Technology Vol. 90 (1997), p.82.

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