Electron microscopy study of crystallization behaviour of Fe40Ni38Mo4B18 (2826 MB) metallic glass

Cumbrera, F.L.; Millán, M.; Conde, A.; Márquez, R.; Vigier, Philippe

doi:10.1007/bf00540385

Cited by 12 publications

(7 citation statements)

References 12 publications

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“…(i) XRD and TEM studies have indicated that the glass crystallizes in two stages into ~,-FeNiMo followed by fcc (FeNi)z3B6 . The same sequence is reported by Nicolai et al (1981) and Cumbrera et al (1982a). Additional stages observed by other investigators are due to the transformation of the crystalline state to more stable states.…”

Section: Discussionsupporting

confidence: 87%

“…It can be noted that fcc (FeNi)23B 6 phase is metastable (Herold and Koster 1978) and hence can transform into 7-FeNiMo phase. The sequence of formation of 7-FeNiMo followed by fcc (FeNi)23B6 is in accordance with the observations of Nicolai et al (1981) and Cumbrera et al (1982a). However, Mizgalski et al (1981) reported a different sequence as follows Amorphous~fcc (FeNi)z 3 B 6 + amorphous ~fcc (FeNi)23 B 6 + 7-FeNiMo~ fcc (FeNi)23 B 6 -4-7-FeNiMo + bct(FeNi)3 B 6.…”

Section: Transmission Electron Microscopysupporting

confidence: 88%

“…However, the mottled structure may be due to the preferential dissolution during electropolishing. Cumbrera et al (1982a) have indeed explained their microstructure on this basis. As has been observed by Walter and Bartram (1978), two sets of haloes are not detected in this glass.…”

Section: Transmission Electron Microscopymentioning

confidence: 87%

“…In a limited but direct microstructural study by TEM, Cumbrera et al (1982a) observed the appearance of 7-FeNiMo followed by fcc (FeNi)23B 6. Subsequent heating to high temperature led to a stable phase whose structure was not determined.…”

Section: The Observations Bymentioning

confidence: 99%

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Crystallization behaviour of Metglas 2826 MB (Fe40Ni38Mo4B18)

1987

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Differential scanning calorimetry, x-ray diffraction and transmission electron microscopy have been employed to determine the thermal stability and identify the crystalline phases on devitrification of Metglas 2826 MB. The glass crystallizes into "f-FeNiMo and fcc (FeNi)zaBo with activation energies of 270 and 375 kJ tool-1 respectively. The reactions are primary and polymorphic in nature. The influence of Mo towards crystallization of FegoNi4oB2o has been to enhance the formation of the fcc (FeNi)2aB6 phase in preference to orthorhombic (FeNi)3 B phase and to raise the thermal stability of the amorphous state.

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Section: Discussionsupporting

confidence: 87%

Section: Transmission Electron Microscopysupporting

confidence: 88%

Section: Transmission Electron Microscopymentioning

confidence: 87%

Section: The Observations Bymentioning

confidence: 99%

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Crystallization behaviour of Metglas 2826 MB (Fe40Ni38Mo4B18)

1987

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“…The magnetoelastic coupling factor of Metglas 2826 MB is 0.98 and the magnetostriction is 12 ppm [28,29]. Metallic glass ribbons of Metglas 2826 MB [30,31,32] are processed by single roller melt spinning technique. The Metglas 2826 MB is made by rapid heat quenching through the melt spin extrusion technique.…”

Section: Introductionmentioning

confidence: 99%

Applications and Advances of Magnetoelastic Sensors in Biomedical Engineering: A Review

Ren

Tan

2019

Materials

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We present a comprehensive investigation into magnetoelastic sensors (MES) technology applied to biomedical engineering. This includes the working principles, detection methods, and application fields of MES technology. MES are made of amorphous metallic glass ribbons and are wireless and passive, meaning that it is convenient to monitor or measure the parameters related to biomedical engineering. MES are based on the inverse magnetoelastic (Villari) effect. When MES are subjected to mechanical stress, their magnetic susceptibility will change accordingly. And the susceptibility of MES is directly related to their magnetic permeability. The varying permeability can positively reflect the applied stress. The various detection methods that have been developed for different field applications include measurement of force, stress, and strain, monitoring of various chemical indexes, and consideration of different biomedical parameters such as the degradation rate and force conditions of artificial bone, as well as various physiological indexes including ammonia level, glucose concentration, bacteria growth, and blood coagulation.

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