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The sea water corrosion testing
platform and business scale
Place and environment
Qingdao marine environment corrosion testing station is situated
at Wheat Island, Qingdao, Shandong, east longitude 120 ¡ã25¡é,
north latitude 36 ¡ã03¡é, A corrosion test station of marine environment
at the north coast of China£¨Yellow Sea, Bohai Sea £©. The average
tide is 2.7m. There is fouling of oyster and barnacles, etc.
Testing facilities
Qingdao marine environment corrosion testing station has a comprehensive
seawater testing platform and can make full-immersion, tidal
and splash zone corrosion tests. Long scale coupons, galvanic
couples, and components of products can be exposed. The total
capacity is 12 thousand pieces.
The full-immersion zone is 0.5~1.5m below the average low tide
level, the tidal zone is at the average mid tide level. The
splash zone is 0.5~1.2m over the high tide level. The facilities
are in accord with the stipulation of national standard GB5776-86.
¡°The comprehensive sea water corrosion testing platform and
the research of its testing method¡± passed the appraisal by
the metallurgical industry ministry in 1988 with the comment¡°The
functions and reliability of the test platform has reached the
advanced level of the world¡±.
¡°high-speed sea water testing unit ¡±has been built for corrosion,
corrosion potential and polarization curve test of materials
at various seawater flow speed. The unit can change seawater
speed within 3-13 m/sec. Data are automatically recorded, and
computer treated. |
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Corrosion testing service items
1 Regular exposure tests in marine environment:
Atmospheric zone
Splash zone
Tidal zone
Full-immersion zone
Sea mud zone
Long scale test: may penetrate the Atmospheric zone splash zone
tidal zone full-immersion zone and sea mud zone. There are 2
kinds of coupons for the long scale test, long coupon£¨e.g. long
steel belt£©, or short coupons connected with insulated lead.
2 Local corrosion test and electrochemical
test in the marine environment
Electrical couple corrosion test
Crevice corrosion test
Stress corrosion test
Corrosion potential test
Self-corrosion potential, galvanic potential and galvanic current
measurement.
3 Flowing seawater corrosion test:
Corrosion test
Electrochemical test: Polarization curve, potential¡ªtime curve,
4 Corrosion-resistance evaluation of materials
in marine environment
5 Corrosion failure analysis of materials in marine environment
6 Anticorrosion design and selection of materials for marine
projects
P jishu2
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