Structure and Corrosion Resistance of Ca50Mg20Cu30 Bulk Metallic Glasses

In this research, the effect of Ta addition on the formation, thermal stability and corrosion behavior of Ti-Zr-Cu-Pd bulk metallic glasses were investigated. The results revealed with minor addition of Ta, higher corrosion resistance and compressive strength as well as large plastic deformation were achieved. Minor addition Ta is effective for the formation of more protectively passive film during the process of anodic polarization. In addition, proper volume fraction nanoparticle with small size is responsible for the large plastic deformation of the as-cast Ti-based bulk metallic glasses with 1% Ta addition.

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Corrosion Behavior of Sm-Based Bulk Metallic Glasses in Salt Solution

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.229-231.26 ◽

2012 ◽

Vol 229-231 ◽

pp. 26-30

Author(s):

Lin Bo Li ◽

Jing Guo ◽

Fei Peng Lou

Keyword(s):

Corrosion Resistance ◽

Corrosion Behavior ◽

Salt Solution ◽

Metallic Glasses ◽

Glassy State ◽

Bulk Metallic Glasses ◽

Immersion Test ◽

Comparison Study ◽

Corrosion Behaviors

In this paper, the corrosion behaviors of Sm-based bulk metallic glasses (BMGs) were investigated by immersion test. It was found that with Co content increasing the ability of corrosion resistance of the alloy increases for Sm-based bulk metallic glasses. A comparison study was made on the corrosion behaviors between the glassy state alloys and crystalline alloys with the same ingredients. The results show that the glassy state alloy has the better corrosion resistance.

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Thermal stability, corrosion resistance, and surface analysis of Cu–Hf–Ti–Ni–Nb bulk metallic glasses

Journal of Materials Research ◽

10.1557/jmr.2009.0069 ◽

2009 ◽

Vol 24 (2) ◽

pp. 316-323 ◽

Cited By ~ 2

Author(s):

C.L. Qin ◽

W. Zhang ◽

K. Asami ◽

N. Ohtsu ◽

A. Inoue

Keyword(s):

Thermal Stability ◽

Corrosion Resistance ◽

Metallic Glasses ◽

Surface Film ◽

Bulk Metallic Glasses ◽

Supercooled Liquid ◽

Supercooled Liquid Region ◽

Liquid Region ◽

Copper Mold Casting ◽

Mold Casting

Bulk metallic glasses (BMGs) with high thermal stability and good corrosion resistance were synthesized in the (Cu0.6Hf0.25Ti0.15)100−x−yNiyNbx system by copper mold casting. The addition of Ni element causes an extension of a supercooled liquid region (ΔTx = Tx – Tg) from 60 K for Cu60Hf25Ti15 to 70 K for (Cu0.6Hf0.25Ti0.15)95Ni5. The simultaneous addition of Ni and Nb to the alloy is effective in improving synergistically the corrosion resistance in 1 N HCl, 3 mass% NaCl, and 1 N H2SO4 + 0.01 N NaCl solutions. The highly protective Hf-, Ti-, and Nb-enriched surface film is formed by the rapid initial preferential dissolution of Cu and Ni, which is responsible for the high corrosion resistance of the alloys in the solutions examined.

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Preparation, Characterization, and Properties of Novel Ti-Zr-Be-Co Bulk Metallic Glasses

Materials ◽

10.3390/ma13010223 ◽

2020 ◽

Vol 13 (1) ◽

pp. 223 ◽

Cited By ~ 1

Author(s):

Pan Gong ◽

Fangwei Li ◽

Junsong Jin

Keyword(s):

Corrosion Resistance ◽

Metallic Glasses ◽

Crystallization Behavior ◽

Base Alloy ◽

Bulk Metallic Glasses ◽

Critical Diameter ◽

Glass Forming Ability ◽

Specific Strength ◽

Glass Forming ◽

Co Addition

We developed novel Ti-Zr-Be-Co bulk metallic glasses through Co addition based on a ternary Ti45Zr20Be35 alloy. By altering the alloying routes and alloying contents, the influence of Co alloying on glass-forming ability, thermal stability, thermoplastic formability, crystallization behavior, and corrosion resistance has been investigated systematically. It was found that the best alloying route for enhancing the glass-forming ability, thermoplastic formability, compressive plasticity, and corrosion resistance is to replace Be by Co. Ti45Zr20Be23Co12 possesses the largest critical diameter of 15 mm for glass formation. Ti45Zr20Be27Co8 possesses the highest thermoplastic formability which is comparable to that of Vitreloy alloys. Ti45Zr20Be25Co10 exhibits the largest room temperature plasticity of 15.7% together with a high specific strength of 3.90 × 105 Nm/kg. The addition of Co also strongly affects the crystallization behavior of the base alloy, resulting in a more complex crystallization process. The corrosion resistance of Ti-Zr-Be alloy in 1 mol/L HCl solution can also be enhanced by Co alloying. The related mechanisms have been explained in detail, which provide guidance for the composition design of Ti-based metallic glasses with improved properties.

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