Results 261 to 270 of about 77,448 (312)
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[Alloys for metal-ceramics 3].
Practica odontologica, 1991A wide variety of restoration materials for prosthetic odontology is now available to the dental surgeon, either of the covalent type (acrylic resins), metallic (alloys), ionic (porcelains), or a combination of them, as in the so-called composites, such as the composite resins, or as ceramics-metals mixtures.
M A, Quintero Englembright +2 more
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Brazing Alloy Design for Metal/Ceramic Joints
2008Etude de l'assemblage des ceramiques par brasage et choix de l'alliage utilise. Les resultats d'essais de mouillage sur le nitrure de silicium montrent que Ti et Zr sont des additifs interessants pour ces alliages. On presente les resultats de l'analyse microstructurale, de la MEB et de l'analyse par microsonde electronique des echantillons ...
Rakesh R. Kapoor, Thomas W. Eagar
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Tensile ductility of superplastic ceramics and metallic alloys
Acta Metallurgica et Materialia, 1991Superplastic ceramics and metallic alloys exhibit different trends in tensile ductility in the range where the strain-rate-sensitivity exponent, m, is high (m⩾0.5). The tensile ductility of superplastic metallic alloys (e.g. fine-grained zinc, aluminium, nickel and titanium alloys) is primarily a function of the strain-rate-sensitivity exponent.
Woo-jin Kim, J. Wolfenstine, O.D. Sherby
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Micromachining of Metals, Alloys and Ceramics by Picosecond Laser Ablation
ASME 2008 International Manufacturing Science and Engineering Conference, Volume 2, 2008Microhole drilling and microstructure machining with a picosecond (ps) Nd:YVO4 laser (pulse duration of 10 ps) in metals, alloys and ceramics are reported. Blind and through microholes were drilled by percussion drilling as well as trepanning drilling. The diameters of the holes were in the range from 20 μm to 1000 μm.
Wenqian Hu, Yung C. Shin, Galen B. King
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Adherence Controlling Elements in Ceramic-Metal Systems. II. Nonprecious Alloys
Journal of Dental Research, 1977Nickel-chromium alloy-ceramic couples used in this study exhibited Cr, Ni-Cr, and Ti-Cr interactions with bonding agent-ceramic complexes. Bonding agents may broaden or suppress the width of interaction zones. Metal oxides such as NiO, Cr2O 3, or more complex forms such as TiO · Cr2O3 and NiCr2O4 may play a prominent role in controlling ceramic-metal ...
K J, Anusavice +2 more
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Adherence Controlling Elements in Ceramic-Metal Systems. I. Precious Alloys
Journal of Dental Research, 1977Elemental analysis of two precious alloy-ceramic systems revealed the accumulation of Sn atoms within the interaction zone of couples subjected to a range of metal oxidation time; and varying total firing times. The source of Sn atoms which accumulated within the interaction zone was the opaque porcelain layer which contained an initially higher Sn ...
K J, Anusavice +2 more
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Static immersion and irritation tests of dental metal‐ceramic alloys
European Journal of Oral Sciences, 2005The expansion of the European Union is bringing new types of metal‐ceramic alloys to the market, i.e. alloys probably unknown in Western‐European dentistry. The aim of this study was to investigate recent developments and ‘classic’ alloy compositions (one iron and two cobalt alloys, unalloyed titanium and an experimental titanium‐zirconium alloy, and ...
Berit I, Ardlin +2 more
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Advanced alloys and metal/ceramic composites from lunar source materials
Acta Astronautica, 1982The problems of balancing the costs of transporting materials from the Earth against the costs of transporting, commissioning and running extraction plant on the Moon mean that utilisation of lunar resources can most usefully be discussed with reference to a development programme.
Sargent, P. M., Derby, B.
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Effect of pH on endotoxin affinity for metal-ceramic alloys
The Journal of Prosthetic Dentistry, 2001Crevicular pH may modify bacterial endotoxin affinity for high-noble metal-ceramic alloys.Porphyromonas gingivalis lipopolysaccharide (LPS) affinity for 3 metal-ceramic alloys at 3 different pH levels was compared in vitro by measuring adsorption to and release from the alloy surface.Metallographically polished disks were fabricated from Pd-Ag-Sn, Au ...
K L, Knoernschild +3 more
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Sealing Metal and Ceramic Parts by Forming Reactive Alloys
IRE Transactions on Component Parts, 1956Metal and ceramic parts are sealed by introducing a molten solder or by inserting a thin sheet of metal that will form a reactive alloy. A wide choice of materials can be used, including many that seal at high temperatures with little metallic evaporation.
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