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Development of DY-1 Restrainer and Discussion of It’s Mechanism

Author: WangYongFei
Tutor: YinZhengAn；LiangChengHao
School: Dalian University of Technology
Course: Electrochemical Engineering
Keywords: Pickling Inhibitor Electrochemical properties Physical adsorption
CLC: TG174.42
Type: Master's thesis
Year: 2002
Downloads: 200
Quote: 2
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Abstract


Orthogonal experimental method developed a DY-1 Pickling , and the best formulation is as follows : Surfactant the ethanol - 4g the sodium thiocyanate 4g hydrazine hydrate 7g 3g the aniline 3g accelerator 1g optimal concentration of 0.2% , good inhibition of A3 steel in HCl solution below 50 ℃ . Chemical weight loss method , the the electrochemical experimental method and physical testing techniques DY-1 inhibition efficiency , polarization resistance and AC impedance electrochemical performance as well as the inhibition mechanism . The results show that the corrosion rate of 98.4% , when the concentration exceeds 0.1% , the corrosion rate of small changes . Temperature higher than 60 ° C , the corrosion rate of A3 steel rose rapidly with increasing temperature . Fe 3 exists , A3 steel corrosion rate with its concentration increases and increases linearly . Experimental results show that the linear polarization adding corrosion inhibitors polarization resistance increases by three orders of magnitude higher than the blank solution , DY-1 acid inhibitor with excellent corrosion inhibition , in the field of chemical cleaning has broad application prospects. Further reference to the technical analysis of physical testing , validation DY-1 is caused by electrostatic attraction , physical adsorption function .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metallurgy and Heat Treatment > Metal corrosion protection,metal surface treatment > Corrosion control and protection > Metal surface protection technology > Metal preservatives,corrosion inhibitors
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