The microstructure of spray coatings using a newly developed thermal spray technique, High Velocity Arc Spray (HVAS), was studied and compared with those of regular arc sprayed coatings. The mechanical and wear properties of HVAS coatings were also investigated. The test results showed that HVAS coatings had better mechanical properties than those of regular arc sprayed coatings. The bonding strength of HVAS Al and 3Cr13 coatings was increased by 114 percent and 51.8 percent; the relative wear resistance of HVAS coatings was about twice that of regular arc sprayed coatings. The difference of microstructure and tribological properties between HVAS and regular arc sprayed coatings was discussed. [S0742-4787(00)00203-4]

1.
Xu
,
B. S.
,
Liang
,
X. B.
,
Ma
,
S. N.
, and
Liu
,
S. C.
,
1998
, “
Research on the Newly Developed High Velocity Arc Spray Gun
,”
China Surf. Eng.
,
11
(
3
), pp.
16
19
.
2.
Sampson
,
E.
,
1993
, “
Advances in Thermal Spray Coatings Broaden Their Applications
,”
Weld. J. (Miami)
,
7
, p.
39
39
.
3.
Wang, B., 1998, “Elevated Temperature Erosion-Corrosion of Several Thermal Spray Coatings,” The Challenge of 21st Century, Codder, C. ed., ASM International, 1, pp. 151.
4.
Steffens, H. D., et al. 1995, “Properties of Sonarc-Sprayed Coatings,” Proc. 8th NTSC, Houston, TX, p. 689.
You do not currently have access to this content.