Surface treatment by laser provides interesting solutions to the problem of accelerated wear of materials.
The present study gives some results about Chromium carbides-rich surface alloys after laser beam melting of a Ni70Cr30 carbon precoated substrate. Wear results are very satisfactory and close to those obtained by injection of Chromium carbide powders into the laser beam in the case of a Nimonic alloy: wear rates are divided by two orders of magnitude.
REFERENCES
1.
Puig
. T.
, Derep
J.L
, Fachinetti
J.L.
, Coquerelle
G.
, (1987
). Traitement de surface par laser du Nimonic
80A
, Material Science and Engineering
, 88
–151
.2.
Puig
T.
, Derep
J.L.
, Coquerelle
G.
, Condat
M
, (1988
), Formation de carbures de chrome sur un alliage Ni.cr
. Annales de Chimie, Science des Mat ériaux, Editeur Masson, à paraître
.3.
THERMODATA
, (1987
), Etude Thermodynamique du ternaire C. Cr. Ni.
, Rapport interne Pyc/mm
, 87
–219
4.
5.
Kurz
W.
, Fisher
D.J.
(1979
), Dendrite Growth in eutectics Alloys, the coupled zone; International Metals Reviews
No. 5 and 6
, 177
.6.
7.
Geissler
E.
, Bergmann
H.W.
, (1986
), Calculation of Temperature Profile, Heating and Quenching, rates during laser processing, Eclat
86
, 25/26 September
, Bad Nauheim
8.
Thompson
E.R.
, Lemkey
F.D.
, (1970
), Met Trans
1
–2799
.9.
Sahm
P.R.
, Lorenz
Z.M.
, (1972
), J. Mater sci
. 7
793
.10.
Van Den Boomgaard
J.
, Wolff
L.R
. (1972
), J. Cryst Growth
15
–11
.11.
Spiller
G.D.T.
, Smith
D.A.
(1980
), Journal of Crystal Growth
, 50
. 445
.12.
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© 1989 Laser Institute of America.
1989
Laser Institute of America
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