Autoclaves for Corrosion Testing

Salient Features

  • Volumes from 500 ml to 25 ltr
  • Design pressures upto350 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 autoclavesystems & 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 & pressureare 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.

Optional Accessories

Video

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Mumbai – 400 070. India.

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