Results 221 to 230 of about 91,789 (247)

Diffusion bonding of mismatch dental alloys

Journal of Biomedical Materials Research Part B: Applied Biomaterials, 2009
AbstractThe diffusion bonding of Ti‐6Al‐4V and Co‐Cr‐Mo dental alloys has been investigated in terms of the atoms diffusion, the microstructure evolution, and the bonding strength. The bonding performance reveals asymmetry diffusion profiles for both the Co and Cr in Ti‐6Al‐4V and the Ti in Co‐Cr‐Mo alloy.
Honghua, Liu, Jiahua, Ni, Luhai, Wu, Guo, He   +3 more
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Diffusion doping in quantum dots: bond strength and diffusivity

Nanoscale, 2017
Semiconducting materials uniformly doped with optical or magnetic impurities have been useful in a number of potential applications. However, clustering or phase separation during synthesis has made this job challenging. Recently the "inside out" diffusion doping was proposed to be successful in obtaining large sized quantum dots (QDs) uniformly doped ...
Avijit, Saha, Mahima, Makkar, Amitha, Shetty, Kushagra, Gahlot, Pavan, A R, Ranjani, Viswanatha   +5 more
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Diffusion‐induced water movement within resin–dentin bonds during bonding

Journal of Biomedical Materials Research Part B: Applied Biomaterials, 2006
AbstractIt is thought that water‐filled channels and nanovoids in resin–dentin bonds represent potential sites for degradation of bonds or hydrolysis of collagen or both. How water gains access to bonded interfaces is not clear. This study evaluated the diffusion‐induced water uptake through resin–dentin interfaces during bonding. Two light‐cured total‐
Masanori, Hashimoto, Franklin R, Tay, Hidehiko, Sano, Masayuki, Kaga, David H, Pashley   +4 more
openaire   +2 more sources

Low-Pressure Diffusion Bonding of Titanium

Journal of Spacecraft and Rockets, 1978
This paper describes a new manufacturing process for diffusion bonding of titanium alloys. The technique requires the use of high-vacuum furnaces, but allows bonding to be carried out at very low contact pressures. This is possible because the parts are kept separate during outgassing through the innovative use of glass tooling.
J. KENNEY, C. DEMINET
openaire   +1 more source

Reflection by defective diffusion bonds

Proceedings., IEEE Ultrasonics Symposium, 2003
The reflection of ultrasonic wave motion by planar defect distributions is investigated with a view towards developing a method for detecting and characterizing bond-plane defects and with an ultimate objective of providing information on the bond strength of metal-to-metal bonds.
J.D. Achenbach, Y. Xu
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Modeling of Diffusion Bonding

2010
Abstract The goals of modeling diffusion bonding can be regarded as twofold: to optimize the selection of the process variables for a given material and to provide an understanding of the mechanisms by which bonding is achieved. This article describes the existing models of diffusion bonding with an assumption that the surfaces to be ...
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Principles of superplastic diffusion bonding

Materials Science and Technology, 1988
AbstractSuperplastic diffusion bonding is now established as an important technique for solid state bonding. There are two types of superplastic diffusion bonding using either transformation or isothermal superplasticity. In this overview, the principles of these two types are summarised and the applications are discussed, including superplastic ...
Y. Maehara, Y. Komizo, T. G. Langdon
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Diffusion Bonding — An Overview

1991
Diffusion bonding is a microdeformation solid phase process finding application in niche areas. The mechanisms of bonding are generally understood, and data on modelling is available although limited to simple metal systems.
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Modelling solid-state diffusion bonding

Acta Metallurgica, 1989
Abstract The increasing use of diffusion bonding as a commercial process has, over the last 15 years, been paralleled by a series of progressively more complex attempts to model the mechanisms and processes occurring during bonding. This paper describes a theoretical model for diffusion bonding which proposes a new and simplified void geometry.
A. Hill, E.R. Wallach
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Diffusion bonding of advanced alloys

2013 International Conference on Aerospace Science & Engineering (ICASE), 2013
Advanced alloys are being developed for a variety of critical applications in the aerospace and nuclear industries and the joining together of dissimilar metals is also becoming increasingly important. However, for a joining process to be truly effective in the fabrication step of the component, it must be able to produce sound quality joints without ...
openaire   +1 more source