Glass-Forming Ability and Thermal Stability of Gd55-xNdxCo20Al25 Metallic Glass

The effects of Nd substitution in Gd55-xNdxCo20Al25 (x=0, 5, 10, 15 and 20) amorphous ribbon samples on glass-forming ability and thermal stability are studied. The change of microstructure cannot be identified by X-ray diffraction. The forecast of glass-forming ability following Fang’s method shows the increase with x, which is further confirmed experimentally by the increasing reduced glass-transition temperatures. The thermal stability has a minimum at x=10, and it is suggested to be due to the different effects of the reducing of Gd and the increase of Nd.

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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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Effects of Cu and Zr on the Formation and Thermal Stability of Al–Ni–Zr–Cu–Y Amorphous Alloy

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.271-272.36 ◽

2012 ◽

Vol 271-272 ◽

pp. 36-41

Author(s):

Wei Yuan Yu ◽

Wen Jiang Lu ◽

Nai Rui Li

Keyword(s):

Thermal Stability ◽

Amorphous Alloy ◽

Amorphous Alloys ◽

Melt Spinning ◽

Glass Forming Ability ◽

X Ray Diffraction ◽

Scanning Calorimetry ◽

Glass Forming ◽

Spinning Process ◽

Thermal Stability Of

Al85Ni10Zr3Y2 and Al80Ni10Zr8-xCuxY2（x=1,2,3,5） alloy ribbons had been prepared by single roller melt-spinning process under vacuum conditions. The ribbons were investigated by X–ray diffraction and differential scanning calorimetry (DSC). The results revealed the strong effect of content of Cu、Zr elements on the glass forming ability and the thermal stability of the alloys. The formation of amorphous alloys are sensitive to contens of these two elements. The completely amorphous alloy or the primary amorphous phase alloy can be obtained when the content of Cu or Zr reach an optimization, otherwise only gaining crystal phase. Al80Ni10Zr7Cu1Y2 and Al80Ni10Zr3Cu5Y2 alloys possess the excellent glass forming ability, which can form the completely amorphous alloy or the composite material of the partial crystal in remaining amorphous.

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Effect of sulfur on the glass-forming ability, phase transformation, and thermal stability of Cu-Zr-Al bulk metallic glass

Acta Materialia ◽

10.1016/j.actamat.2021.116923 ◽

2021 ◽

pp. 116923

Author(s):

Hao-Ran Jiang ◽

Jing-Yi Hu ◽

Nico Neuber ◽

Benedikt Bochtler ◽

Bastian Adam ◽

...

Keyword(s):

Thermal Stability ◽

Phase Transformation ◽

Metallic Glass ◽

Bulk Metallic Glass ◽

Glass Forming Ability ◽

Glass Forming ◽

Thermal Stability Of

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Formation and Thermal Stability of Nd0.32Y0.68Si1.7 Layers Formed by Channeled Ion Beam Synthesis

MRS Proceedings ◽

10.1557/proc-514-191 ◽

1998 ◽

Vol 514 ◽

Cited By ~ 1

Author(s):

M. F. Wu ◽

A. Vantomne ◽

S. Hogg ◽

H. Pattyn ◽

G. Langouche ◽

...

Keyword(s):

Thermal Stability ◽

Ion Beam ◽

Hexagonal Structure ◽

Orthorhombic Structure ◽

X Ray Diffraction ◽

X Ray ◽

Transmission Electron ◽

Good Crystalline Quality ◽

Ion Beam Synthesis ◽

Thermal Stability Of

ABSTRACTThe Nd-disilicide, which exists only in a tetragonal or an orthorhombic structure, cannot be grown epitaxially on a Si(111) substrate. However, by adding Y and using channeled ion beam synthesis, hexagonal Nd0.32Y0.68Si1.7 epilayers with lattice constant of aepi = 0.3915 nm and cepi = 0.4152 nm and with good crystalline quality (χmin of Nd and Y is 3.5% and 4.3 % respectively) are formed in a Si(111) substrate. This shows that the addition of Y to the Nd-Si system forces the latter into a hexagonal structure. The epilayer is stable up to 950 °C; annealing at 1000 °C results in partial transformation into other phases. The formation, the structure and the thermal stability of this ternary silicide have been studied using Rutherford backscattering/channeling, x-ray diffraction and transmission electron microscopy.

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Study of Thermal Behaviour of EPDM/SBR Blends and Carbon Nanocoatings Deposited by Sputtering

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.875.116 ◽

2021 ◽

Vol 875 ◽

pp. 116-120

Author(s):

Muhammad Alamgir ◽

Faizan Ali Ghauri ◽

Waheed Qamar Khan ◽

Sajawal Rasheed ◽

Muhammad Sarfraz Nawaz ◽

...

Keyword(s):

Thermal Stability ◽

Weight Loss ◽

Thermogravimetric Analysis ◽

Thermal Behavior ◽

Thermal Behaviour ◽

X Ray Diffraction ◽

X Ray ◽

Thermal Stability Of

In this study, the effect of SBR concentration (10 Phr, 20 Phr & 30 Phr ) on the thermal behavior of EPDM/SBR blends was studied. Thermogravimetric analysis (TGA) was used to check weight loss of samples as function of temperature by heating upto 600°C. X-ray diffraction (XRD) was performed to determine quality and % crystallinity of the elastomer blends. It was seen that % crystallinity improved with an increase in the content of SBR in EPDM/SBR blends. TGA revealed that the thermal stability of EPDM/SBR blends has improved by 17% than neat EPDM. Carbon nano-coatings produced by sputtering have no beneficial influence on thermal behaviour of elastomers.

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Syntheses, Crystal Structures and Thermal Stability of Co(II) and Zn(II) Complexes with Ethyl Carbazate

Zeitschrift für Naturforschung B ◽

10.1515/znb-2005-0505 ◽

2005 ◽

Vol 60 (5) ◽

pp. 505-510 ◽

Cited By ~ 12

Author(s):

Tong-Lai Zhang ◽

Jiang-Chuang Song ◽

Jian-Guo Zhang ◽

Gui-Xia Ma ◽

Kai-Bei Yu

Keyword(s):

Thermal Stability ◽

Aqueous Solutions ◽

Diffraction Analysis ◽

Single Crystals ◽

Slow Evaporation ◽

X Ray Diffraction ◽

Element Analysis ◽

Thermal Stabilities ◽

X Ray ◽

Thermal Stability Of

Cobalt(II) and zinc(II) complexes of ethyl carbazate (ECZ), [Co(ECZ)3](NO3)2 and [Zn(ECZ)3] (NO3)2, were synthesized. Single crystals of these two compounds were grown from aqueous solutions using a slow evaporation method. Their structures have been determined by X-ray diffraction analysis. Both of them are monoclinic with space group P21/n. The complexes are further characterized by element analysis and IR measurements. Their thermal stabilities are studied by using TG-DTG, DSC techniques. When heated to 350 °C, only metal oxide was left for both complexes.

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Characterization of the Interface Between the Bulk Glass Forming Alloy Zr41Ti14Cu12Ni10Be23 with Pure Metals and Ceramics

Journal of Materials Research ◽

10.1557/jmr.2000.0232 ◽

2000 ◽

Vol 15 (7) ◽

pp. 1617-1621 ◽

Cited By ~ 30

Author(s):

Jan Schroers ◽

Konrad Samwer ◽

Frigyes Szuecs ◽

William L. Johnson

Keyword(s):

Sessile Drop ◽

Bulk Glass ◽

X Ray Diffraction ◽

Scanning Calorimetry ◽

X Ray ◽

Glass Forming ◽

Processing Times ◽

Thermal Stability Of

The reaction of the bulk glass forming alloy Zr41Ti14Cu12Ni10Be23 (Vit 1) with W, Ta, Mo, AlN, Al2O3, Si, graphite, and amorphous carbon was investigated. Vit 1 samples were melted and subsequently solidified after different processing times on discs of the different materials. Sessile drop examinations of the macroscopic wetting of Vit 1 on the discs as a function of temperature were carried out in situ with a digital optical camera. The reactions at the interfaces between the Vit 1 sample and the different disc materials were investigated with an electron microprobe. The structure and thermal stability of the processed Vit 1 samples were examined by x-ray diffraction and differential scanning calorimetry. The results are discussed in terms of possible applications for composite materials.

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Immobilization of hemoglobin on stable mesoporous multilamellar silica vesicles and their activity and stability

Journal of Materials Research ◽

10.1557/jmr.2005.0360 ◽

2005 ◽

Vol 20 (10) ◽

pp. 2682-2690 ◽

Cited By ~ 15

Author(s):

Yufang Zhu ◽

Weihua Shen ◽

Xiaoping Dong ◽

Jianlin Shi

Keyword(s):

Thermal Stability ◽

Pore Size ◽

X Ray Diffraction ◽

X Ray ◽

Practical Applications ◽

Silica Material ◽

Transmission Electron ◽

Mesoporous Support ◽

Adsorption Desorption ◽

Thermal Stability Of

A stable mesoporous multilamellar silica vesicle (MSV) was developed with a gallery pore size of about 14.0 nm. A simulative enzyme, hemoglobin (Hb), was immobilized on this newly developed MSV and a conventional mesoporous silica material SBA-15. The structures and the immobilization of Hb on the mesoporous supports were characterized with x-ray diffraction, transmission electron microscopy, N2 adsorption-desorption isotherms, Fourier transform infrared, ultraviolet-visible spectroscopy, and so forth. MSV is a promising support for immobilizing Hb due to its large pore size and high Hb immobilization capacity (up to 522 mg/g) compared to SBA-15 (236 mg/g). Less than 5% Hb was leached from Hb/MSV at pH 6.0. The activity study indicated that the immobilized Hb retained most peroxidase activity compared to free Hb. Thermal stability of the immobilized Hb was improved by the proctetive environment of MSV and SBA-15. Such an Hb-mesoporous support with high Hb immobilization capacity, high activity, and enhanced thermal stability will be attractive for practical applications.

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