17 Result(s)

Article

Development and Testing of a Simplified Dummy for Frontal Crash

Anthropomorphic testing devices (ATDs) used in vehicle crash testing are the industry standard for occupant safety research, but they are expensive and complex equipment. The purpose of this research was to de...

K. Fung, R. Xu, S. Jung, J. Sobanjo in Experimental Techniques (2019)

Article

Effect of Viscosity Measurement Method to Simulate High Pressure Die Casting of Thin-Wall AlSi10MnMg Alloy Castings

In the present study, a rotating cylinder viscometer (RCV) was adopted to measure the viscosity of AlSi10MnMg aluminum alloy. The results show that the measured viscosity is much higher than previously reporte...

B. W. Zhu, L. X. Li, X. Liu, L. Q. Zhang… in Journal of Materials Engineering and Perfo… (2015)

Article

Microstructure Simulation of Al-Cu Alloy Based on Inverse Identified Interfacial Heat Transfer Coefficient

The interfacial heat transfer coefficient (IHTC) is taken as one of the most important factors affecting the accuracy of the simulation. In the present paper, the IHTC variation with temperature was obtained b...

X. B. Bu, L. X. Li, L. Q. Zhang, B. W. Zhu… in Journal of Materials Engineering and Perfo… (2013)

Article

Oxidation resistance of multi-walled carbon nanotubes purified with sulfuric and nitric acids

X. X. Zhang, C. F. Deng, R. Xu, D. Z. Wang in Journal of Materials Science (2007)

Article

Autostoichiometric Mocvd Of Multicomponent Thin Films LiTaO₃, LiNbO₃ and Sr_xBa_1-xNbO₆

A novel stoichiometric vapor deposition process, Autostoichiometric MOCVD, was developed in this study to prepare stoichiometric thin films. Heterometallic alkoxides were used as single precursor for two diffe...

R. Zhang, R. Xu in MRS Online Proceedings Library (1999)

Article

Inverse gas chromatography, surface properties, and interactions among components of paint formulations

Inverse gas chromatography (IGC) was applied to the surface characterization of polymers and pigments used in the formulation of protective coatings. IGC measurements over a significant temperature range provi...

A. Ziani, R. Xu, H. P. Schreiber, T. Kobayashi in Journal of Coatings Technology (1999)

Article

Solidification microstructure of super-α2 alloy prepared by gas atomization

Ti–25Al–10Nb–3V–1Mo alloy has been prepared by gas atomization with atomizing pressure above 8 MPa. The cooling rate of 5 × 10³ ∼ 3 × 10⁵ K s^-1 was obtained according to secondary dendritic arm spacing, as the pa...

R Xu, Y. Y Cui, D Li, D. M Xu, Q. C Li, Z. Q Hu in Journal of Materials Science (1997)

Article

Martensite transition in rapidly solidified Ti₃Al-2Nb alloy

The microstructure of rapidly solidified Ti₃Al-2Nb alloy consists of an ordered orthorhombic α″₀ phase. In the foil samples for transmission electron microscopy prepared by chemical thinning, the α″₀ → β₀ transfo...

R. Xu, Y. Y. Cui, D. M. Xu, D. Li, Q. C. Li, Z. Q. Hu in Journal of Materials Research (1997)

Article

Microstructural development of a gas-atomized and hot-pressed super-α₂ alloy

A variety of heat treatments have been employed to explore the microstructure in Ti-25Al-10Nb-3V-lMo alloy prepared by gas atomization and hot pressing. These treatments include quenching by oil cooling and wa...

R. Xu, Y. Y. Cui, D. M. Xu, D. Li, Q. C. Li… in Metallurgical and Materials Transactions A (1996)

Article

Kinetic and microstructural aspects of the reaction layer at ceramic/metal braze joints

The formation and stability of the reaction layer when brazing non-oxide ceramic materials were studied. Si₃N₄-Si₃N₄, SiC-SiC and Si₃N₄-stainless steel braze joints were produced and investigated. Several filler ...

W. Tillmann, E. Lugscheider, R. Xu, J. E. Indacochea in Journal of Materials Science (1996)

Article

Chemical Vapor Deposition of Oxides from Alkoxides

MOCVD of oxides can be achieved through deposition reaction schemes such as oxidation, thermal pyrolysis, plasma assisted pyrolysis, radiation-assisted pyrolysis or any combinations of these free-radical proce...

R. Xu in MRS Online Proceedings Library (1995)

Article

The microwave technique: A new route for high dispersion of inorganic salts onto supports

F. -S. **ao, W. Xu, S. Qiu, R. Xu in Journal of Materials Science Letters (1995)

Article

Autostoichiometric Vapor Deposition of Multicomponent Oxides

The theoretical basis of an autostoichiometric vapor deposition method is discussed. We try to define and analyze through the stagnant film model for vapor deposition, the mechanism through which the stoichiom...

K. W. Chour, R. Xu in MRS Online Proceedings Library (1994)

Article

Silicon nitride-stainless steel braze joining with an active filler metal

Hot-pressed Si₃N₄ was brazed to 410-stainless steel using a Ag-Cu-Ti alloy foil in a vacuum. The occurrence of cracking due to processing was examined by systematically varying the brazing temperature and time be...

R. Xu, J. E. Indacochea in Journal of Materials Science (1994)

Article

Reaction layer characterization of the braze joint of silicon nitride to stainless steel

This investigation studies the role of titanium in the development of the reaction layer in braze joining silicon nitride to stainless steel using titanium-active copper-silver filler metals. Thi...

R. Xu, J. E. Indacochea in Journal of Materials Engineering and Performance (1994)

Article

Effect of titanium substitution on the high-T _c superconductor YBa₂Cu₃O_7-δ

R. Xu, Y. ** in Journal of Materials Science Letters (1989)

Article

Analysis of the relationship between transition temperature, structure, critical current density and relative density of the polycrystalline superconductor YBa₂Cu₃O_7−δ

Y. **, R. Xu in Journal of Materials Science Letters (1989)