scholarly journals High-temperature aquamarine from vugless granite pegmatites of the Suprunovskoye deposit Irkutsk oblast, Russia

2019 ◽  
Vol 64 (7) ◽  
pp. 750-756
Author(s):  
E. I. Gerasimova ◽  
V. Yu. Prokofiev ◽  
S. Z. Smirnov ◽  
T. N. Kovalskaya
Keyword(s):  
High Temperature ◽  
Chemical Composition ◽  
Melt Inclusions ◽  
Silicate Melt ◽  
Irkutsk Oblast ◽  
Silicate Liquid ◽  
Granitic Magmatism ◽  
Fluid And Melt Inclusions ◽  
Late Stages

New data on the chemical composition were obtained for the aquamarine of the Suprunovskoye deposit: SiO2 66.10; Na2O 0.51; Al2O3 17.99; MgO 0.37; K2O 0.03; CaO 0.02; FeO 0.58; BeOcalc. 13.70 (wt%) and fluid and melt inclusions were investigated. Defined that aquamarine was formed in the late stages of granitic magmatism from a specific pegmatite silicate melt or water-silicate liquid enriched with water (>7 wt%), heavy REE (La/Yb = 0.48), lithium, but depleted in fluorine and boron at temperatures of about 700ºС and a pressure of about 6 kbar.

NICROFER 5520 Co

Alloy Digest ◽  
1995 ◽  
Vol 44 (3) ◽  
Keyword(s):  
High Temperature ◽  
Chemical Composition ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Temperatures ◽  
Heat Treating ◽  
High Temperature Corrosion ◽  
Creep Properties ◽  
Nickel Chromium ◽  
Temperature Performance

Abstract NICROFER 5520 Co is a nickel-chromium-cobalt-molybdenum alloy with excellent strength and creep properties up to high temperatures. Due to its balanced chemical composition the alloy shows outstanding resistance to high temperature corrosion in the form of oxidation and carburization. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: Ni-480. Producer or source: VDM Technologies Corporation.

Scaling Behavior of Superheater Tube Alloys in ASME High Temperature Steam Research Tests at 1100–1500 F

1962 ◽  
Vol 84 (3) ◽  
pp. 223-257 ◽  
Author(s):  
F. Eberle ◽  
C. H. Anderson
Keyword(s):  
High Temperature ◽  
Chemical Composition ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Scaling Behavior ◽  
Effect Of Temperature ◽  
Relative Resistance ◽  
Superheater Tube ◽  
Shock Resistance ◽  
High Temperature Steam

The scales formed on seven ferritic and ten austenitic types of commercial tubing presently in use and of potential future use for superheater service were examined after 6, 12, and 18 months’ exposure to air and to flowing steam of 2000 psi at temperatures of 1100, 1200, 1350, and 1500 F. The effect of temperature and time of exposure on the adherence, thermal-shock resistance, thickness, structure, and chemical composition of the scales was investigated and the relative resistance to scaling of the various alloys evaluated.

scholarly journals New method for initial composition determination of crystallized silicate melt inclusions

2018 ◽  
Vol 483 ◽  
pp. 162-173 ◽  
Author(s):  
Laura Créon ◽  
Gilles Levresse ◽  
Laurent Remusat ◽  
Hélène Bureau ◽  
Gerardo Carrasco-Núñez
Keyword(s):  
Melt Inclusions ◽  
New Method ◽  
Silicate Melt ◽  
Initial Composition ◽  
Composition Determination

scholarly journals Formation of Intermediate Phases and Supersaturated Solid Solution in Al-Cu System during Diffusion

2018 ◽  
Vol 383 ◽  
pp. 31-35 ◽  
Author(s):  
Alexey Rodin ◽  
Nataliya Goreslavets
Keyword(s):  
Phase Diagram ◽  
Solid Solution ◽  
High Temperature ◽  
Chemical Composition ◽  
Low Temperature ◽  
Supersaturated Solid Solution ◽  
Diffusion Processes ◽  
Equilibrium Phase ◽  
Equilibrium Phase Diagram ◽  
Intermediate Phases

The study of diffusion processes in the aluminum - copper system was carried out at the temperature 350 and 520 °C. Special attention was paid on the chemical composition of the system near Al/Cu interface. It was determined that the intermediate phases in the system, corresponding to the equilibrium phase diagram, were not formed at low temperature. At high temperature the intermediate phases forms starting with Cu - rich phases. In both cases supersaturated solid solution of copper in aluminum could be observed near the interface.

scholarly journals Fluid-Rock Interaction in the Lower Crust Based on Silicate Melt Inclusions in Garnet Granulite Xenoliths

2020 ◽  
Author(s):  
Bianca Németh ◽  
Kálmán Török ◽  
Eniko Bali ◽  
Zoltan Zajacz ◽  
Csaba Szabó
Keyword(s):  
Lower Crust ◽  
Melt Inclusions ◽  
Silicate Melt ◽  
Rock Interaction ◽  
Garnet Granulite ◽  
Granulite Xenoliths

scholarly journals Measurement of high-temperature strains in superalloy and carbon/carbon composites using chemical composition gratings

Strain ◽  
2016 ◽  
Vol 53 (1) ◽  
pp. e12218
Author(s):  
Weihua Xie ◽  
Songhe Meng ◽  
Hua Jin ◽  
Chong Du ◽  
Shiyu Huo ◽  
...  
Keyword(s):  
High Temperature ◽  
Chemical Composition ◽  
Carbon Composites
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