Evaluating two new Schiff bases synthesized on the inhibition of corrosion of copper in NaCl solutions

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14804-14813 ◽  
Author(s):  
Yang Zhou ◽  
Shenying Xu ◽  
Lei Guo ◽  
Shengtao Zhang ◽  
Hao Lu ◽  
...  
Keyword(s):  
Schiff Bases ◽  
Copper Surface ◽  
Nacl Solution ◽  
Organic Film ◽  
Copper Dissolution

An AND or DSM organic film can be formed onto a copper surface in 3% NaCl solution and acts as a barrier to copper dissolution and O2reduction.

scholarly journals Poly (Vinyl Butyral-Co-Vinyl Alcohol-Co-Vinyl Acetate) Coating Performance on Copper Corrosion in Saline Environment

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 439
Author(s):  
Adriana Samide ◽  
Claudia Merisanu ◽  
Bogdan Tutunaru ◽  
Gabriela Eugenia Iacobescu
Keyword(s):  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Electrochemical Impedance ◽  
Copper Surface ◽  
Copper Sample ◽  
Electrochemical Measurements ◽  
Copper Corrosion ◽  
Nacl Solution ◽  
Force Microscopy ◽  
Vinyl Butyral

Poly (vinyl butyral-co-vinyl alcohol-co-vinyl acetate) named further PVBA was investigated as a protective coating for copper corrosion in 0.9% NaCl solution using electrochemical measurements such as, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization associated with atomic force microscopy (AFM). The PVBA coating on the copper surface (Cu-PVBA) was modeled in methanol containing PVBA. Its inhibitory properties against corrosion was comparatively discussed with those of the copper sample treated in methanol without polymer (Cu-Me) and of untreated sample (standard copper). A protective performance of PVBA coating of 80% was computed from electrochemical measurements, for copper corrosion in NaCl solution. Moreover, AFM images designed a specific surface morphology of coated surface with PVBA, clearly highlighting a polymer film adsorbed on the copper surface, which presents certain deterioration after corrosion, but the metal surface was not significantly affected compared to those of untreated samples or treated in methanol, in the absence of PVBA.

Experimental and theoretical studies of 4,6-diamino-2-mercaptopyrimidine as a copper inhibitor in 3.5 wt% NaCl solution

RSC Advances ◽  
2016 ◽  
Vol 6 (18) ◽  
pp. 15210-15219 ◽  
Author(s):  
Zhi Cheng ◽  
Shi Mo ◽  
Jing Jia ◽  
Ji Feng ◽  
Hong Qun Luo ◽  
...  
Keyword(s):  
Corrosion Inhibition ◽  
Inhibition Efficiency ◽  
Copper Surface ◽  
Theoretical Studies ◽  
Nacl Solution ◽  
High Corrosion ◽  
Corrosion Inhibition Efficiency ◽  
Experimental And Theoretical Studies

4,6-Diamino-2-mercaptopyrimidine can be adsorbed on copper surface and exhibits a high corrosion inhibition efficiency in 3.5 wt% NaCl solution.

scholarly journals Effect of Nano-SnS and Nano-MoS2 on the Corrosion Protection Performance of the Polyvinylbutyral and Zinc-Rich Polyvinylbutyral Coatings

Nanomaterials ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 956 ◽  
Author(s):  
Zuopeng Qu ◽  
Lei Wang ◽  
Hongyu Tang ◽  
Huaiyu Ye ◽  
Meicheng Li
Keyword(s):  
Molecular Dynamics ◽  
Corrosion Protection ◽  
Md Simulation ◽  
Theoretical Calculations ◽  
Composite Coatings ◽  
Copper Surface ◽  
Corrosion Mechanism ◽  
Nacl Solution ◽  
Scanning Electron ◽  
Better Than

In this paper, four composite coatings of nano-SnS/polyvinylbutyral (PVB), nano-MoS2/PVB, nano-SnS-Zn/PVB, and nano-MoS2-Zn/PVB were prepared, and their anti-corrosion mechanism was analyzed by experimental and theoretical calculations. The results of the electrochemical experiments show that the effect of nano-MoS2 on the corrosion protection performance of PVB coating is better than that of nano-SnS in 3% NaCl solution, and that the addition of Zn further enhances this effect, which is consistent with the results of weight loss measurements. Furthermore, the observation of the corrosion matrix by the field emission scanning electron microscope (FESEM) further confirmed the above conclusion. At last, the molecular dynamics (MD) simulation were carried out to investigate the anti-corrosion mechanism of the nanofillers/PVB composites for the copper surface. The results show that both nano-SnS and nano-MoS2 are adsorbed strongly on the copper surface, and the binding energy of nano-MoS2 is larger than that of nano-SnS.

Adsorption and corrosion inhibition of phytic acid calcium on the copper surface in 3wt% NaCl solution

2014 ◽  
Vol 83 ◽  
pp. 147-154 ◽  
Author(s):  
Chuan-chuan Li ◽  
Xiao-yu Guo ◽  
Shu Shen ◽  
Ping Song ◽  
Ting Xu ◽  
...  
Keyword(s):  
Phytic Acid ◽  
Corrosion Inhibition ◽  
Copper Surface ◽  
Nacl Solution

Electrochemical Investigation of Cyproconazole as Corrosion Inhibitor for Copper in Synthetic Seawater

2013 ◽  
Vol 763 ◽  
pp. 23-27 ◽  
Author(s):  
Ji Liu ◽  
Li Zheng ◽  
Hai Bo Gan ◽  
Huan Liu ◽  
Zhi Hua Tao ◽  
...  
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Corrosion Inhibitor ◽  
Inhibition Efficiency ◽  
Electrochemical Impedance ◽  
Copper Surface ◽  
Electrochemical Investigation ◽  
Nacl Solution ◽  
Adsorption Film ◽  
Synthetic Seawater

This paper presents the investigation of cyproconazole,namely2-(4-chlorophenyl)-3-cyclopropyl-1-(1H-1,2,4-triazol-1-yl) butan-2-ol,ascorrosion inhibitor for copper in synthetic seawater (3.5% NaCl solution).The inhibition action of cyproconazole on the corrosion of copper was investigated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization.The selective desorption of Cyproconazole from copper surface was also studied by the differential polarization curves.EIS indicates that the inhibition formed an adsorption film on copper surface.The inhibition efficiency increases with increasing concentration.Polarization curves show that Cyproconazole acts as mixed-up inhibitor.

Corrosion Inhibition of Gemini Surfactant for Copper in 3.5% NaCl

2014 ◽  
Vol 936 ◽  
pp. 1125-1131 ◽  
Author(s):  
Kun Cao ◽  
Hu Yuan Sun ◽  
Bao Rong Hou
Keyword(s):  
Photoelectron Spectroscopy ◽  
Gemini Surfactant ◽  
Inhibition Efficiency ◽  
Copper Surface ◽  
Optimum Concentration ◽  
Nacl Solution ◽  
X Ray ◽  
Head Groups ◽  
Alkyl Ammonium ◽  
Long Chain

A new gemini surfactant containing long chain alkyl ammonium headgroups have been used as corrosion inhinbitor for copper in 3.5% NaCl solution. The weight loss and electrochemical methods results showed that presence of inhibitor greatly decrease corrosion rate, gemini surfactant acted as an excellent corrosion inhibitor with inhibition efficiency greater than 96% at an optimum concentration of 30 mg·L-1. X-ray photoelectron spectroscopy reveals that the gemini surfactant molecules adsorb onto the copper surface through the two ammonium head groups (N+).

Introduction of a Dynamic Corrosion Inhibitor for Copper Interconnect Cleaning

2012 ◽  
Vol 195 ◽  
pp. 124-127
Author(s):  
Atsushi Otake ◽  
Akira Kuroda ◽  
Roger Luo ◽  
Paul R. Bernatis
Keyword(s):  
Corrosion Inhibitor ◽  
Electrochemical Deposition ◽  
Corrosion Inhibitors ◽  
Chemical Mechanical Planarization ◽  
Protective Layer ◽  
Copper Surface ◽  
Device Fabrication ◽  
Copper Interconnects ◽  
Organic Film ◽  
Polishing Process

Copper has become the material of choice for the interconnects in semiconductor devices due to its low resistance and ease of processing [1]. Device fabrication with copper requires electrochemical deposition and chemical mechanical planarization (CMP). Since the polished copper surface generated during CMP is considered to be one of the most important factors which determine the performance of the interconnect, post-CMP cleaners must efficiently remove residues generated by the polishing process [2]. CMP slurries and post-CMP cleaners frequently include corrosion inhibitors to form a protecting layer on copper surface. If a thick organic film remains on copper after cleaning processes, it can have unfavorable effects on performance of copper interconnects. To minimize this issue, the authors earlier described a corrosion inhibitor which formed a very thin protective layer and that was easily removed by plasma treatment [3, 4].

scholarly journals Poly(Vinyl Butyral-co-Vinyl Alcohol-co-Vinyl Acetate) Coating Performance on Copper Corrosion in Saline Environment

2019 ◽  
Author(s):  
Adriana Samide ◽  
Claudia Merisanu ◽  
Bogdan Tutunaru ◽  
Gabriela Eugenia Iacobescu
Keyword(s):  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Electrochemical Impedance ◽  
Copper Surface ◽  
Copper Sample ◽  
Electrochemical Measurements ◽  
Copper Corrosion ◽  
Nacl Solution ◽  
Force Microscopy ◽  
Vinyl Butyral

Poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate) named further PVBA was investigated as protective coating for copper corrosion in 0.9 % NaCl solution using electrochemical measurements such as, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization associated with Atomic Force Microscopy (AFM). The PVBA coating on the copper surface (Cu-PVBA) was modeled in methanol containing PVBA. Its inhibitory properties against corrosion was comparatively discussed with those of the copper sample treated in methanol without polymer (Cu-Me) and of untreated sample (standard copper). A protective performance of PVBA coating of 80 % was computed from electrochemical measurements, for copper corrosion in NaCl solution. Also, AFM images designed a specific surface morphology of coated surface with PVBA, clearly highlighting a polymer film adsorbed on the copper surface, which presents certain deterioration after corrosion, but metal surface was not significantly affected compared to those of untreated samples or treated in methanol, in the absence of PVBA.

Novel Use of Surfactants in Copper Chemical Mechanical Polishing (CMP)

2005 ◽  
Vol 867 ◽  
Author(s):  
Youngki Hong ◽  
Udaya B. Patri ◽  
Suresh Ramakrishnan ◽  
S.V. Babu
Keyword(s):  
Anionic Surfactants ◽  
Effective Interaction ◽  
Sodium Dodecylsulfate ◽  
Copper Surface ◽  
Deionized Water ◽  
Copper Dissolution ◽  
Slurry System ◽  
Copper Cmp ◽  
Inhibition Performance ◽  
Better Than

AbstractIn this study, the interaction between several kinds of surfactants and copper surface was examined to control the dissolution of copper during CMP. Among those surfactants, sodium dodecylsulfate (SDS), one of the conventional anionic surfactants, showed effective interaction with copper and significantly suppressed the dissolution of the copper at acidic and neutral pH ranges in a model copper CMP slurry system consisting of 3 wt% fumed silica, 1 wt% glycine, and 5 wt% hydrogen peroxide in deionized water. The inhibition performance of copper dissolution by SDS is better than that of Benzotriazole (BTA), a conventional inhibiting agent of copper dissolution in a copper CMP slurry.

scholarly journals Atomic Scale Insight into Corrosion Inhibition: DFT Study of 2-Mercaptobenzimidazole on Locally De-Passivated Copper Surfaces

2021 ◽  
Author(s):  
Fatah Chiter ◽  
Dominique Costa ◽  
Vincent Maurice ◽  
Philippe Marcus
Keyword(s):  
Metal Surface ◽  
Barrier Properties ◽  
Copper Surface ◽  
Atomic Scale ◽  
Localized Corrosion ◽  
Oxide Surface ◽  
Organic Film ◽  
Copper Surfaces ◽  
Significant Difference ◽  
Key Factor

Abstract A key factor for effective inhibition by organic molecules of the initiation of localized corrosion by pitting is their ability to form a protective organic film in locally de-passivated zones exposing the bare metal next to the oxide-covered surface. Herein, based on quantum chemical DFT calculations, we study the chemistry of the interface between 2-mercaptobenzimidazole (MBI) and a copper surface partially covered by a Cu2O passive oxide film. The results show the adaptability of the molecule to adsorb strongly on the different zones, oxide or metal, of a locally de-passivated surface. However, differences in the local adsorption configurations, involving covalent bonding with H-bonding depending on oxide or metal and on conformer, thione or thiolate, lead to the formation of an inhomogeneous organic film. Increasing order of local adsorption strength is oxide walls < metal surface < oxide surface < oxide edges for the thione species, whereas there is no significant difference of local adsorption strength for the thiolate species. Our results suggest that both species of MBI can heal the oxygen and copper low coordinated sites as well as can protect the exposed metal surface, thus enhancing the barrier properties of the passivated surface even when locally defective.

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