Effects of iron implantation on the aqueous corrosion of magnesium

Akavipat, Sanay; Hale, Edward B.; Habermann, C. E.; Hagans, Patrick L.

doi:10.1016/0025-5416(85)90328-3

Cited by 22 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The I corr values for the treated samples are shifted towards negative direction as increasing implantation dosage. This indicates that the surface layer containing more NH + 2 ions may be more beneficial to restrain the transfer of Cl − during the polarization process [46][47][48]. Therefore the degradation of magnesium alloy could be suppressed by NH + 2 ions implantation.…”

Section: Corrosion Performancementioning

confidence: 97%

Improvement in corrosion resistance and biocompatibility of AZ31 magnesium alloy by NH2+ ions

Wei

Liu

et al. 2020

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Magnesium alloys have been considered to be favorable biodegradable metallic materials used in orthopedic and cardiovascular applications. We introduce NH + 2 to the AZ31 Mg alloy surface by ion implantation at the energy of 50 KeV with doses ranging from 1×10 16 ions/cm 2 to 1×10 17 ions/cm 2 to improve its corrosion resistance and biocompatibility. Surface morphology, mechanical properties, corrosion behavior and biocompatibility are studied in the experiments. The analysis confirms that the modified surface with smoothness and hydrophobicity significantly improves the corrosion resistance and biocompatibility while maintaining the mechanical property of the alloy.

show abstract

Section: Corrosion Performancementioning

confidence: 97%

Improvement in corrosion resistance and biocompatibility of AZ31 magnesium alloy by NH2+ ions

Wei

Liu

et al. 2020

Journal of Alloys and Compounds

View full text Add to dashboard Cite

show abstract

“…The roleplayed by these elements after laser treatment is certainly different from that when they are present in conventional processing, especially Cu, Fe, and Ni, which are detrimental, even in small concentrations under equilibrium conditions. This improvement is probably related to the structure and composition of the near-surface region [34].…”

Section: Laser Annealingmentioning

confidence: 98%

“…The primary disadvantages are that it is a line−of-sight technique and it modifies only a thin film [33]. Akvipat and co-workers [34] examined the effects of iron implanted Mg and AZ91C in boric acid and borate buffer solution with 1000 ppm NaCl. It was known that iron degrades the corrosion resistance of magnesium alloys when introduced during conventional processing, and the goal of their work was to evaluate the effects of iron introduced by implantation.…”

Section: Surface Modificationmentioning

confidence: 99%

“…The main disadvantage is the extra machining necessary because of dimensional changes during treatment. Akvipat and coworkers [34] examined the effects of thin layers of about 100nm of Al, Cr, Cu, Fe, and Ni on the pitting resistance of AZ91C in boric acid-borate solution with 1000 ppm NaCl. The roleplayed by these elements after laser treatment is certainly different from that when they are present in conventional processing, especially Cu, Fe, and Ni, which are detrimental, even in small concentrations under equilibrium conditions.…”

Section: Laser Annealingmentioning

confidence: 99%

See 1 more Smart Citation

Corrosion and Surface Treatment of Magnesium Alloys

Hu¹,

Nie²,

Ma³

2014

Magnesium Alloys - Properties in Solid and Liquid States

View full text Add to dashboard Cite

The need for fuel efficiency and increased performance in transportation systems continually places new demands on the materials used. The design criteria which automobile and aerospace industries are primarily concerned with are density, strength, stiffness, and corrosion resistance. Low-density materials may reduce fuel costs, increase range, and allow larger payloads. High strength and stiffness are necessary for adequate performance and safety characteristics, while corrosion resistance helps to ensure that design lifetime is achieved.Magnesium is the th most abundant element on the earth making up approximately . % by mass of the earth s crust and . % by mass of the oceans [ ]. Other advantages of magnesium alloys have played an important role in a broad variety of structural applications in the automobile, aerospace, electronics, and consumer products industries. Magnesium has specific high strength to weight ratio, and it is % lighter than aluminium and % lighter than iron. Typical magnesium alloys weigh ~ % less than their aluminium counterparts at equal stiffness. Magnesium also has high thermal conductivity, good electromagnetic shielding characteristics, good ductility, excellent castability and better damping characteristics than aluminum, and Mg is easily recycled. The main use of magnesium by far is as an alloying addition to aluminum alloys. Other major uses of magnesium include desulphurization of steel and the production of ductile iron. "s a structural material, it can be used in aerospace components, automobile and computer parts, mobile phones and sporting goods. Magnesium for structural applications is processed into castings die, sand, permanent mold and investment , extrusions, forgings, impact extrusions and flat rolled products. Die castings account for % of the castings shipped. Magnesium can be joined by riveting, or any of the commonly used welding methods [ ].With the dramatically increased emphasis on weight reduction, magnesium is receiving a lot of attention as a material for use in the next generation automobiles. This is due to limited fossil

show abstract

“…Ion implantation of silicon, chromium, zirconium, niobium, and molybdenum into pure aluminum have been found to enhance pitting resistance of the aluminum, whereas implantation of magnesium and zinc had no effect on pitting resistance or lowered pitting resistance, respectively (Ref 57, 58). Beneficial results have been observed for iron and boron implantation into magnesium and magnesium alloys ( Ref 59,60). Ion implantation can easily form layers up to several thousand angstroms thick, depending on the mass of the species being implanted and the ion beam energy.…”

Section: Multivalent Metals the Most Logical Methodsmentioning

confidence: 99%

Chromate Conversion Coatings

Hagans¹,

Haas²

1994

Surface Engineering

View full text Add to dashboard Cite

CHROMATE CONVERSION COATINGS are formed on metal surfaces as a result of the chemical attack that occurs when a metal is immersed in or sprayed with an aqueous solution of chromic acid, chromium salts such as sodium or potassium chromate or dichromate, hydrofluoric acid or hydrofluoric acid salts, phosphoric acid, or other mineral acids. The chemical attack facilitates the dissolution of some surface metal and the formation of a protective film containing complex chromium compounds. A variety of metals and electrodeposited metal coatings, including zinc, cadmium, magnesium, and aluminum, can be chromate conversion coated. Several articles in this Volume contain details about the procedures used to apply chromate coatings to specific metals and metal coatings. The conversion coating of cadmium electrodeposits is discussed in the article "Cadmium Plating"; the articles "Surface Engineering of Aluminum and Aluminum Alloys" and "Surface Engineering of Magnesium Alloys" contain information relating to the application of chromate conversion coatings to these metals; and procedures for applying conversion coatings to electrodeposited zinc are described in the article "Zinc Plating." A comprehensive summary of literature sources related to chromate conversion coatings is available in a detailed review of surface treatments for aluminum alloys (Ref 1). In addition, processing and testing details for application of chromium conversion coatings to aluminum, magnesium, cadmium, copper, silver, Zmc X "X" "X "X" Source: Ref 2 Economical replacement for anodizing if abrasion resistance is not required Used to "touch-up" damaged areas on anodized surfaces Thin coatings prevent "spotting out" of brass and copper electrodeposits. No fumes generated during chemical polishing

show abstract

Effects of iron implantation on the aqueous corrosion of magnesium

Cited by 22 publications

References 9 publications

Improvement in corrosion resistance and biocompatibility of AZ31 magnesium alloy by NH2+ ions

Improvement in corrosion resistance and biocompatibility of AZ31 magnesium alloy by NH2+ ions

Corrosion and Surface Treatment of Magnesium Alloys

Chromate Conversion Coatings

Contact Info

Product

Resources

About