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 Environmentally
Assisted Cracking (EAC) encompasses Stress Corrosion Cracking
(SCC), Corrosion Fatigue (CF), Hydrogen Embrittlement (HE),
and Creep-Crack Growth (CCG). EAC failures frequently are
catastrophic and are difficult to reproduce and study in the
laboratory. The professional staff at CC Technologies has
the experience and the equipment necessary to solve EAC problems
for a variety of material/ environment combinations.
| Capabilities
include: |
| Slow Strain Rate
Testing Equipment |
| Autoclaves for EAC
Testing at Elevated Temperatures and Pressures |
| Mechanical Fatigue
Machines |
| Creep Frames for
Constant and Cyclic Load Tests |
| Electrohydraulic
Fatigue Testing Systems |
| Computerized Data
Acquisition Systems |
| Crack Growth Measurement
by Electric Potential Drop or Compliance Measurements |
CC Technologies also has extensive electrochemical
equipment for EAC testing under electrochemical potential
control, permitting the examination of a wide range of oxidizing
conditions.
A variety of environmental
chambers is available, constructed of glass, PTFE, stainless
steel, and nickel based alloys. This provides the ability
to perform tests over a wide range of temperatures, pressures,
and solution chemistries.
| EAC
research programs include: |
| EAC of Line-Pipe
Steels for Gas Pipelines |
| SCC of Copper-Base
Alloys in Heat Exchanger Applications |
| EAC of Stainless
Steels for Process Industry Applications at Elevated
Temperatures and Pressures |
| EAC of Stainless
Steels in Flue Gas Desulfurization Systems |
| Threshold CF Crack
Growth of Alloys Used in Paper Machines |
| CCG of Steels for
High Temperature Steam Pipes |
| H2S Cracking
of Oil Production Equipment |
These programs have included
failure analyses, development of mitigation techniques,
and materials selection, as well as fundamental studies.
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