scholarly journals Study of Zr-Ti-Ni-Cu Amorphous Brazing Fillers Applied to Brazing Titanium TA2 and Q235 Steel

2014 ◽  
Vol 04 (05) ◽  
pp. 191-196
Author(s):  
秋亚 翟
Keyword(s):  
Brazing Fillers ◽  
Q235 Steel

scholarly journals Zr-Ti-Ni-Cu Amorphous Brazing Fillers Applied to Brazing Titanium TA2 and Q235 Steel

2014 ◽  
Vol 05 (11) ◽  
pp. 823-829
Author(s):  
Jie Cui ◽  
Qiuya Zhai ◽  
Jinfeng Xu ◽  
Yahui Wang ◽  
Jianlin Ye
Keyword(s):  
Brazing Fillers ◽  
Q235 Steel

Effects of magnesium chloride polluted soils on underground Q235 steel pipelines

2015 ◽  
Vol 57 (10) ◽  
pp. 850-858
Author(s):  
Pengju Han ◽  
Y. Frank Chen ◽  
Xiaohong Bai ◽  
Bin He
Keyword(s):  
Magnesium Chloride ◽  
Polluted Soils ◽  
Q235 Steel

scholarly journals Corrosion Protection of Q235 Steel Using Epoxy Coatings Loaded with Calcium Carbonate Microparticles Modified by Sodium Lignosulfonate in Simulated Concrete Pore Solutions

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1982
Author(s):  
Weilin Liu ◽  
Jiansan Li ◽  
Xiangqi Huang ◽  
Jinye Bi
Keyword(s):  
Calcium Carbonate ◽  
Corrosion Inhibitor ◽  
Aqueous Media ◽  
Mechanical Tests ◽  
Attenuated Total Reflection ◽  
Shielding Effect ◽  
Sodium Lignosulfonate ◽  
Epoxy Coatings ◽  
Pencil Hardness ◽  
Q235 Steel

In this study, calcium carbonate (CaCO3) microparticles having pH-sensitive properties were loaded with sodium lignosulfonate (SLS), a corrosion inhibitor. Scanning electron microscope (SEM), UV–VIS spectrophotometer (UV-vis), X-ray diffraction (XRD), and attenuated total reflection-Fourier-transform infrared spectroscopy (ATR-FTIR) were applied to evaluate the properties of the synthetic microparticles. This material could lead to the release of corrosion inhibitor under different pH conditions of the aqueous media. However, the extent of release of the corrosion inhibitor in the acidic media was higher, leading to enhanced shielding effect of the Q235 steel. These microparticles can serve as anti-corrosion additive for epoxy resin-coated Q235 steel. Electrochemical experiments were used to assess the anti-corrosive ability of the epoxy coatings in simulated concrete pore (SCP) solution, confirming the superior corrosion inhibition of the epoxy coating via incorporation of 5 wt % calcium carbonate microparticles loaded with SLS (SLS/CaCO3). The physical properties of coating specimens were characterized by water absorption, contact angle, adhesion, and pencil hardness mechanical tests.

scholarly journals Design an Epoxy Coating with TiO2/GO/PANI Nanocomposites for Enhancing Corrosion Resistance of Q235 Carbon Steel

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2629
Author(s):  
Shimin Chen ◽  
Bo Li ◽  
Rengui Xiao ◽  
Huanhu Luo ◽  
Siwu Yu ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Photocurrent Density ◽  
Photoelectrochemical Performance ◽  
Q235 Steel ◽  
Protective Barrier ◽  
Barrier Coating ◽  
Pani Composite ◽  
Steel Protection ◽  
Q235 Carbon Steel

In this work, a ternary TiO2/Graphene oxide/Polyaniline (TiO2/GO/PANI) nanocomposite was synthesized by in situ oxidation and use as a filler on epoxy resin (TiO2/GO/PANI/EP), a bifunctional in situ protective coating has been developed and reinforced the Q235 carbon steel protection against corrosion. The structure and optical properties of the obtained composites are characterized by XRD, FTIR, and UV–vis. Compared to bare TiO2 and bare Q235, the TiO2/GO/PANI/EP coating exhibited prominent photoelectrochemical properties, such as the photocurrent density increased 0.06 A/cm2 and the corrosion potential shifted from −651 mV to −851 mV, respectively. The results show that the TiO2/GO/PANI nanocomposite has an extended light absorption range and the effective separation of electron-hole pairs improves the photoelectrochemical performance, and also provides cathodic protection to Q235 steel under dark conditions. The TiO2/GO/PANI/EP coating can isolate the Q235 steel from the external corrosive environment, and may generally be regarded a useful protective barrier coating to metallic materials. When the TiO2/GO/PANI composite is dispersed in the EP, the compactness of the coating is improved and the protective barrier effect is enhanced.

Joining of C f /SiBCN composite with two Ni-based brazing fillers and interfacial reactions

2017 ◽  
Vol 33 (5) ◽  
pp. 487-491 ◽  
Author(s):  
Wenwen Li ◽  
Bo Chen ◽  
Yi Xiong ◽  
Huaping Xiong ◽  
Yaoyong Cheng ◽  
...  
Keyword(s):  
Interfacial Reactions ◽  
Brazing Fillers

Studies on Corrosion Behavior of Q235 Steel by Iron Bacteria, Sulfate-Reducing Bacteria and Total General Bacteria in Sedimentary Water of Storage Tank

2011 ◽  
Vol 337 ◽  
pp. 281-284
Author(s):  
Dong Sheng Chen ◽  
Yong Zhang Zhou ◽  
Min Liu ◽  
Kai Wei Guo ◽  
Wu Ji Wei
Keyword(s):  
Corrosion Behavior ◽  
Storage Tank ◽  
Corrosion Current ◽  
Sulfate Reducing Bacteria ◽  
Steel Electrode ◽  
Q235 Steel ◽  
Iron Bacteria ◽  
Sulfate Reducing ◽  
Microbial System ◽  
Reducing Bacteria

The corrosion behavior of Q235 steel by Iron Bacteria (IB), Sulfate-reducing Bacteria (SRB) and Total General Bacteria (TGB) in sedimentary water of storage tank from an aromatics plant was investigated mainly by static hanging piece method, potentiodynamic polarization curve and hysteresis loop method. The results showed that the interaction of IB, SRB and TGB accelerated the corrosion rate of Q235 steel. The corrosion current density of Q235 steel electrode in IB, SRB and TGB solution was higher than that in the sterile solution, and the corrosion potential shifted in negative direction. IB, SRB and TGB reduced the corrosion resistance of Q235 steel. The corrosion of Q235 steel in the mixture of IB, SRB and TGB was more serious than in a single microbial system. The presence of IB, SRB and TGB made the pitting occur easily.

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