Corrosion Research Papers

Vappro Corrosion Control Australia is pleased to present a comparative study, published by Dr. Nelson Cheng, from our partner, Magna International Pte Ltd, on removing rust and corrosion using Molecular Reaction Surface Technology (MRST), against other conventional forms of corrosion treatment on carbon steel, using electrochemical impedance spectroscopy (EIS). The first aim was to understand what advantages MRST presented over other current forms of corrosion treatment. The second aim was to understand the effect of each corrosion treatment method on the metal surface and to discover if any of these methods were able to passivate the surface of the metal to prevent it from future corrosion. In this research, a I/E Tafel plot is utilised to obtain the transfer current of the electrochemical cell to determine the corrosion rate of the carbon steel specimens. The corrosion rates of the carbon steel specimens serve as a comparison to the effectiveness of the various corrosion treatment methods and to discover if any surface passivation had occurred on the metal surface after treatment. The present research is able to discuss the similarities between MRST and other commercial and common methods of corrosion treatment and highlights some key findings that should be further studied in future research. 

Please download this short paper to learn more.

 A Comparative Study of Molecular Reaction Surface Technology.pdf

Vappro Corrosion Control Australia is pleased to present a paper, published by Dr. Nelson Cheng, from our partner, Magna International Pte Ltd, on the Inhibition of Seawater Steel Corrosion. Corrosion and degradation of materials are pernicious problems that affect infrastructure assets, industry efficiency, and environment quality. The world's diverse facilities and installations require products, methods, and techniques to protect against, mitigate, and prevent corrosion damage. Volatile corrosion inhibitors (VCIs) are one of the modern technologies used to manage corrosion for the benefit of the global economy.

The performance of a volatile corrosion inhibitor (VCI) on steel via colloid formation through its reaction with Ca and Mg ions in seawater was studied. The physical and chemical properties of seawater, with and without the VCI at different concentrations, were determined. The VCI’s effciency was assessed, and its suitability for the steel system in seawater was indicated at an optimal concentration of 0.05%.

Please download this short paper to learn more.

 Inhibition of Seawater Steel Corrosion via Colloid Formation.pdf

This article documents the avoidance of hydrogen embrittlement during rust removal process. It also documents the difference between Vappro VBCI MRST 812 and Magna 114 a conventional acid-based rust remover. It features the advantages of using Vappro VBCI MRST (Molecular Reaction Surface Technology) during rust removal process over the conventional acid-based rust remover.

Commercially, Sulfuric, Hydrochloric and Phosphoric acids are common acids used in rust removal process. Sulfuric acid shows lower hydrogen embrittlement rates at lower temperatures but it has low rust removing capability, thus it is typically used at around 60°C. At this temperature, sulfuric acid shows hydrogen embrittlement rate similar to that of hydrochloric acid. Phosphoric acid is also similar.

The embrittlement of a metal or alloy by atomic hydrogen involves the ingress of hydrogen into a component, an event that can seriously reduce the ductility and loadbearing capacity, cause cracking and catastrophic brittle failures at stresses below the yield stress of susceptible materials. Hydrogen embrittlement occurs in a number of forms but the common features are an applied tensile stress and hydrogen dissolved in the metal. Examples of hydrogen embrittlement are cracking of weldments or hardened steels when exposed to conditions which inject hydrogen into the component.

Please download this short paper to learn more.

Avoidance_of_Hydrogen_Embrittlement_during_Rust_Removal_Process.pdf

Vappro Corrosion Control Australia is pleased to present a paper, published by Dr. Nelson Cheng, from our partner, Magna International Pte Ltd, on the preservation of Military Vehicles. In practice, most of the military equipment and arms are continually kept in reserve, so it is of paramount importance to protect them from corrosion while maintaining their original technical properties. Trends in protecting such equipment have been based on reliability, easy application, quick mobilization, and economic benefits. This preservation system is readily adaptable to all types of vehicles, plant and equipment. Call us now to discuss how we can assist you with solutions suitable for your assets.

Please download this short paper to learn more.

 NACE_Materials_Performance_Corrosion_Inhibitors_for_Pronlonged_Preservation_of_Military_Equipment__Vehicles.pdf

Vappro Corrosion Control Australia is pleased to present a paper, published by Dr. Nelson Cheng, from our partner, Magna International Pte Ltd, on the demand for green and environmentally friendly products. The journal projects the future demands for environmentally friendly Vapour Bio Corrosion Inhibitors (VBCIs) over the traditional inorganic Volatile Corrosion Inhibitors (VCIs) and its transportability using exhaustible carrier materials such as mineral oils, hydrocarbon solvents, papers and Polyethylene films etc. It also covers the different types of Corrosion Inhibitor, Chemical Compound Structure of Vappro VBCI Organic Inhibitors, how Vappro VBCI works, the Criteria and Processes used for the development of VBCI Inhibitors including the Selection of Inhibitors, Environmentally Friendly Carriers used for the transportability of Vappro VBCIs, Test Materials Used, its Vapor Inhibition Ability (VIA) and the adsorption corrosion inhibitor mechanism.

 Please download this short paper to learn more.

 The Future Trends of VBCI Research Journal PDF

Vappro Corrosion Control Australia is pleased to present a paper, published by Dr. Nelson Cheng, from our partner, Magna International Pte Ltd, on removing rust and corrosion using Molecular Reaction Surface Technology (MRST). Most rust removal treatments involve leaving the rusted metals in an acidic cleaning agent, which burns the rust off along with a loss of a proportionate amount of metal. This article will introduce Vappro 812-MRST (Molecular Reaction Surface Technology) for removing rust and corrosion from surfaces without etching the metal. 

Please download this short paper to learn more.

 Research Paper on Removing Rust & Corrosion with Vappro 812 MRST.pdf

Vappro Corrosion Control Australia is pleased to present a study, published by Dr. Nelson Cheng, from our partner, Magna International Pte Ltd, on combating corrosion in hydralic systems. Hydraulic and Transmission oil systems are susceptible to corrosion caused by condensation of humid air. The said problem is more prevalent in countries located in the tropical region, immobilizing machines, military equipment and vehicles. 

Hydraulic supporting equipment used in many industries, such as, marine, offshore, shipping, oil and gas industries. Its reliability and life directly affect the quality of supporting underground. The level of chloride ion and moisture content in the transmission medium of electro-hydraulic controlling system is an important factor causing fault of hydraulic support. This article discusses the usage of Vappro VBCI 852 Hydraulic oil additive to combat corrosion in hydraulic system. 

Please download this short paper to learn more.

 Combating Corrosion in Hydraulic System with Vappro VBCI 852 Hydraulic Oil Additive

Vappro Corrosion Control Australia is pleased to present a study, published through Intech, by Dr. Nelson Cheng, from our partner, Magna International Pte Ltd. Corrosion is a pernicious phenomenon that appears in engineering materials, infrastructure assets, and industrial equipment exposed to the atmosphere, water, and soil. The aim of this chapter is to produce a body of knowledge on the theory and practice of corrosion inhibition so it can be used in the selection of corrosion inhibitors, to prevent and/or minimize corrosion in natural environments and industrial facilities. Corrosion inhibitors are employed in different forms such as emitters, pellets, powders, films, paints, aerosols, and aqueous and solvent solutions, depending on their chemical composition: organic or inorganic. They are impregnated on papers or plastics; closed in pouches and sachets; or added to coatings and paints to form a barrier against the attack of corrosive agents. They are employed in many industries: automotive, offshore / onshore, water, military, marine, manufacture, oil and gas, electronics, and concrete structures.

Please download this short paper to learn more.

 Vapour Inhibitors for Corrosion Protection in Humid, Saline, Natural and Industrial Environments

Controlling vapour pressure of VCI Products is the state-of-theart of VCI manufacturers as different VCI carriers are used to meet each unique application due to the wide applications of VCI products. Establishing the Vapour Corrosion Inhibition Ability of VCI product is of paramount importance to all manufacturers.

In view of the above a reliable test method is essential. The German TL 8135-002 Test Method has been adopted to ascertain the Vapour Inhibition Ability (VIA) Properties.

Please download this short paper to learn more.

 Establishing_the_Vapour_Inhibiton_Ability_VIA_of_Vappro_849_VBCI_Powderpdf.pdf

Normal Polyethylene (PE) Film, Shrink Film and Stretch Film are used widely for packaging for both domestic and industrial applications. They are extensively used in conjunction with anti-corrosion oils and anti-corrosion coatings for packaging of different types of machinery, auto-parts, pumps, metallic components and etc against atmospheric corrosive elements and moisture. Subsequently industrial solvents, cleaners and degreasers need to be employed to remove the said anti-corrosion products resulting in generation of industrial waste, costly waste-disposable, and emitting of unnecessary volatile organic compound (VOC). The current method used of PE Film with anticorrosion oils and coatings is not an environmentally friendly approach. Hence, Vappro VBCI MBR 1000 Resin was developed to solve the said problems with the environment in mind. This article entails the details of the usage of Vappro VBCI MBR 1000, its formulation and dosages for extruding it into Vappro VBCI 826 PE Film, Vappro 826S Shrink Film, Vappro VBCI 825 Stretch Film, and the German Test Method TL 81305-002 used to evaluate the Vapor Inhibition Ability of the extruded films.

Vappro_VBCI_MBR_1000_Masterbatch_Polyethylene_Resin._ResearchGate.pdf