Name of the equipment: Electrochemical Corrosion Analyzer Make & Model: CH Instruments Inc., USA CHI608E Potentiostat/Galvanostat I-Stem Registration ID- 3224881                             Category of Instrument Electrochemical Instrument Types of Analysis / Testing Corrosion Testing Application: Studying the corrosion resistance of various metals and alloys. Description of Instrument A Corrosion testing equipment.

Book through I-STEM: https://www.istem.gov.in/ Slot Booking Link I-STEM Slot Booking link for External User

Booking available for Internal and External Both Requisition form for Internal External

Faculty In-charge: Dr. Murali KP Email ID: kpmurali@nitc.ac.in Phone number:  0495-2286414

Technical Staff: Sanal PR (TA SG I)   sanal@nitc.ac.in Jithin Krishna M (TA) jithinkrishnam@nitc.ac.in Jijeesh k (ST) jijeeshk@nitc.ac.in

Department MED Office Email ID medoffice@nitc.ac.in Location Material Science Lab Production Block Lab Phone No 0495-2286450

Potentiostat · Zero resistance ammeter · 2- or 3- or 4-electrode configuration · Floating (isolated from earth) or earth ground · Maximum potential: ±10 V · Maximum current: ±250 mA continuous, ±350 mA peak · Compliance Voltage: ±13 V · Potentiostat rise time: < 1 μs, 0.8 μs typical · Applied potential ranges (volts): ±0.01, ±0.05, ±0.1, ±0.65, ±3.276, ±6.553, ±10 · Applied potential resolution: 0.0015% of potential range · Applied potential accuracy: ±1 mV, ±0.01% of scale · Applied potential noise: < 10 μV rms · Measured current range: ±10 pA to ±0.25 A in 12 ranges · Measured current resolution: 0.0015% of current range, minimum 0.3 fA · Current measurement accuracy: 0.2% if current range >=1e-6 A/V, 1% otherwise · Input bias current: < 20 pA Galvanostat · Galvanostat applied current range: 3 nA - 250 mA · Applied current accuracy: 20 pA ±0.2% if > 3e-7A, ±1% otherwise · Applied current resolution: 0.03% of applied current range · Measured potential range (volts): ±0.025, ±0.1, ±0.25, ±1, ±2.5, ±10 · Measured potential resolution: 0.0015% of measured range

Galvanostat Electrometer · Reference electrode input impedance: 1x10^12 ohm · Reference electrode input bandwidth: 10 MHz · Reference electrode input bias current: <= 10 pA @25°C Waveform Generation and Data Acquisition · Fast waveform update: 10 MHz @ 16-bit · Fast data acquisition: dual channel 16-bit ADC, 1,000,000 samples/sec simultaneously · External signal recording channel at maximum 1 MHz sampling rate   Experimental Parameters · CV and LSV scan rate: 0.000001 to 10,000 V/s · Potential increment during scan: 0.1 mV @ 1,000 V/s · CA and CC pulse width: 0.0001 to 1000 sec · CA and CC minimum sample interval: 1 μs · True integrator for CC · DPV and NPV pulse width: 0.001 to 10 sec · SWV frequency: 1 Hz to 100 kHz · i-t sample interval: minimum 1 μs · ACV frequency: 0.1 Hz to 10 kHz · SHACV frequency: 0.1 Hz to 5 kHz · FTACV frequency: 0.1 Hz to 50 Hz, simultaneously acquire 1st, 2nd, 3rd, 4th, 5th, and 6th harmonics ACV data · IMP frequency: 0.00001 Hz to 1 MHz · IMP amplitude: 0.00001 V to 0.7 V rms

· Sample Type: Metals, Alloys and Conductive materials

· Pre-preparation: The sample should be clean & polished.

· Dimensions for the sample: Should be a flat surface that must cover a circular hole with diameter 10 mm and thickness must not exceed 10 mm and should have a minimum thickness of 1 mm.

· Type of Samples to be Analysed - Metallic

· Maximum No. of Samples Accepted at a Time- 1

· Minimum No of Days Required for Analysis – 2 Days

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