Effect of microalloying of Nb on corrosion resistance and thermal stability of ZrCu-based bulk metallic glasses

AbstractTwo Zr-base bulk metallic glasses were investigated in the present work. DSC experiments were performed at different heating rates (dT/dt). Evolution of the characteristic temperatures, glass transition and onset of crystallisation, were determined as a function of dT/dt. Evolution of shear elastic modulus and internal friction are measured as a function of temperature and resulting microstructural evolution; these evolutions are related to variation of the atomic mobility.

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Effect of Minor Addition Ta on the Thermal Stability and Corrosion Resistance of Ti-Zr-Cu-Pd Bulk Metallic Glasses

Materials Science Forum ◽

10.4028/www.scientific.net/msf.750.23 ◽

2013 ◽

Vol 750 ◽

pp. 23-26 ◽

Cited By ~ 4

Author(s):

Feng Xiang Qin ◽

Guo Qiang Xie ◽

Sheng Li Zhu ◽

Zhen Hua Dan

Keyword(s):

Thermal Stability ◽

Plastic Deformation ◽

Corrosion Resistance ◽

Metallic Glasses ◽

Anodic Polarization ◽

Volume Fraction ◽

Bulk Metallic Glasses ◽

Large Plastic Deformation ◽

Minor Addition ◽

Proper Volume

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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Ti Microalloying Effect on Corrosion Resistance and Thermal Stability of Cu45Zr48Al7 Bulk Metallic Glass

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.490-495.3868 ◽

2012 ◽

Vol 490-495 ◽

pp. 3868-3873 ◽

Cited By ~ 1

Author(s):

Xiao Hong Yang ◽

Xi Peng Nie ◽

Jian Zhong Jiang

Keyword(s):

Thermal Stability ◽

Corrosion Resistance ◽

Metallic Glasses ◽

X Ray Diffraction ◽

Scanning Calorimetry ◽

X Ray ◽

Glass Forming ◽

Ti Addition ◽

Mould Casting ◽

Thermal Stability Of

Bulk metallic glasses (BMGs) of Cu45Zr48-xAl7Tix with x= 0, 1.5, and 3 at.% were prepared by copper mould casting. The corrosion resistance of the BMGs with different Ti contents was examined by potentiodynamic polarization tests and weight loss measurements in 1 N NaOH, 1 N H2SO4, 1 N H2SO4 + 0.01 N NaCl and 0.5 N NaCl solutions, respectively. The newly-developed BMGs’ corrosion resistance in Cl-- or both H+ and Cl--ions containing solutions can be greatly enhanced. The influence of Ti addition on glass forming ability (GFA) and thermal stability was investigated by x-ray diffraction and differential scanning calorimetry in detail. The alloy containing 1.5 at.% Ti exhibits the largest GFA, the critical size comes up to 10 mm in diameter.

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