ORNL-2106 - the Molten Salt Energy Technologies Web Site

ANP PROJECT PROGRESS REPORT
the effect of time on the extent of decarburization
of the steel specimens.
Two AIS1 1043 steel specimens and sodium were
loaded into evacuated Armco iron and type 304
ELC stainless steel containers and tested at
183O0F for 400 hr. The conditions and results
of the tests are given in Table 3.2.6. As expected
on the basis of the previous investigation, exten-
sive decarburization of the steel specimens oc-
13
curred in both the iron and the stainless steel
containers. The extent of decarburization of the i
AIS1 1043 steel specimens was greater in these
400-hr tests than in the previous 100-hr test,
and, in addition, the vapor zone of the stainless
steel container was carburized in the 400-hr test
and not in the 100-hr test. This discrepancy may
be due to the vapor zone sample having been taken
closer to the bath zone after the 400-hr test than
TABLE 826. CARBON AND NICKEL ANALYSES OF THE VARIOUS COMPONENTS OF SYSTEMS DESIGNED
FOR STUDYING THE DECARBURIZATION OF MILD STEEL BY SODIUM
Test System
AIS1 1043 steel specimen in Steel specimen
Armco iron container
As received
AIS1 1043 steel specimen in
type 304 ELC stainless
steel container
*Sample taken 4 in. above bath level.
**Sample taken 1 in. above bath level.
154
Weight Loss in
Carbon Content Nickel Content
Material Analyzed 400-hr Test
(wt 96) (w 16)
2
(din. 1
After 100-hr test
After 400-hr test
Iron container
As received
Vapor zone
After 100-hr test
After 400-hr test
Bath zone
After 100-hr test
After 400-hr test
Steel specimen
As received
After 100-hr test
After 400-hr test
Steel container
As received
Vapor zone
After 100-hr test
After 400-hr test
Bath zone
After 100-hr test
After 400-hr test
0.433
0.121
0.054
0.018
0.019
0.016
0.035
0.024
0.433
0.100
0.074
0.008
0.008
0.090
0.037 11.12
0.022f
0.162** 10.32
0.128
0.200
9.98
0.0001
0.0408
0.0002
0.0303
*
'W