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- AMAR - Model HPHT - Corrosion Testing ...
AMAR - Model HPHT -Corrosion Testing System
Of the numerous applications of high-pressure autoclaves, electrochemical corrosion testing at high temperature and high pressure is most favored using Amar make pressure reactors. These are custom-designed using corrosion coupon handles and coupon holders as per client requirements.
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Salient Features
- Volumes from 500 ml to 25 ltr
- Design pressures upto 350 bar and temperatures upto 650°C
- Available in different materials of construction – SS 316, Hastelloy C, Inconel, Titanium etc.
- Stirred /Non-stirred autoclave systems
- Recirculating loop & electrochemical corrosion testing
- For static, dynamic, loop & electrochemical studies
Methods Of Testing Corrosion Using Autoclave
- Weight loss method with corrosion coupons
- Electrical resistance probe
- Electrochemical probe
- Electrochemical noise in current or potential
Applications
- Autoclaves for corrosion application are mainly used in aggressive environments like H2S & supercritical waters in oil refineries & defence industries
- Electro - chemical corrosion measurements in HPHT media-water and other solutions
- Coating and materials evaluation in high pressure simulated deep sea condition (submarine paint etc) using impedance measurements
- Autoclave for cement curing under deep sea applications as per API standard
- Polymer testing /curing/processing under HPHT conditions
- Slow strain rate tests for stress corrosion cracking under HPHT conditions
Static & Stirred Autoclave
- Normally corrosion test coupons are suspended in static (non-stirred) or stirred autoclave systems & corrosion is measured in terms of weight loss. In stirred autoclave system, sometimes the coupon holders are attached to the shaft & rotated during testing
- Autoclaves are then fed with the corrosive media & designed temperature & pressure is reached & maintained in the autoclaves. Optionally suitable electrodes like pH or ORP(MOC: SS316 / Hast-C) are provided to measure pH & redox potential under pressure
- Autoclaves with working, counters / reference & auxillary electrodes can also be offered withpotential measurement system for electrochemical corrosion testing
Re-Circulating Loop Autoclaves For Corrosion Testing
In this system, the autoclave is connected with a special high pressure pump which canrecirculate water/liquid continuously at very high velocity through the test spool & theautoclave connected in line with each other.