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.

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.
Puig
T.
(
1988
),
Thèse Université
Paris-Sud, orsay
,
France
5.
Kurz
W.
,
Fisher
D.J.
(
1979
),
Dendrite Growth in eutectics Alloys, the coupled zone; International Metals Reviews
No.
5 and 6
,
177
.
6.
Crank
J.
, (
1975
),
The Mathematics of Diffusion
,
Clarendon Press - Oxford
15
.
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.
May
G.J.
(
1975
),
Metal sci.
9
.
269
This content is only available via PDF.
You do not currently have access to this content.