Thermally populated “bright” states for wide-range and high temperature sensing in air

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

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TEM study of boron additions to cobalt aluminide

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100104790 ◽

1988 ◽

Vol 46 ◽

pp. 546-547

Author(s):

Gerald B. Feldewerth

Keyword(s):

High Temperature ◽

Turbine Engines ◽

Major Drawback ◽

University Of Missouri ◽

Specific Strength ◽

Aerospace Applications ◽

Wide Range ◽

Ordered Alloys ◽

The University ◽

Very High

In recent years an increasing emphasis has been placed on the study of high temperature intermetallic compounds for possible aerospace applications. One group of interest is the B2 aiuminides. This group of intermetaliics has a very high melting temperature, good high temperature, and excellent specific strength. These qualities make it a candidate for applications such as turbine engines. The B2 aiuminides exist over a wide range of compositions and also have a large solubility for third element substitutional additions, which may allow alloying additions to overcome their major drawback, their brittle nature.One B2 aluminide currently being studied is cobalt aluminide. Optical microscopy of CoAl alloys produced at the University of Missouri-Rolla showed a dramatic decrease in the grain size which affects the yield strength and flow stress of long range ordered alloys, and a change in the grain shape with the addition of 0.5 % boron.

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PLATINUM

Alloy Digest ◽

10.31399/asm.ad.pt0001 ◽

1970 ◽

Vol 19 (11) ◽

Keyword(s):

Corrosion Resistance ◽

High Temperature ◽

Heat Treating ◽

Industrial Applications ◽

High Melting ◽

High Melting Point ◽

White Metal ◽

Temperature Performance ◽

Wide Range ◽

Corrosion And Oxidation

Abstract PLATINUM is a soft, ductile, white metal which can be readily worked either hot or cold. It has a wide range of industrial applications because of its excellent corrosion and oxidation resistance and its high melting point. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Pt-1. Producer or source: Matthey Bishop Inc..

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ACI TYPE HN

Alloy Digest ◽

10.31399/asm.ad.ss0410 ◽

1982 ◽

Vol 31 (6) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

High Temperature ◽

Steel Casting ◽

Nickel Content ◽

Heat Treating ◽

High Temperature Corrosion ◽

Temperature Performance ◽

Wide Range ◽

Iron Chromium

Abstract Type HN is an iron-chromium-nickel alloy containing sufficient chromium for good high-temperature corrosion resistance and with nickel content in excess of the chromium. This alloy has properties somewhat similar to the more widely used ACI Type HT alloy but with better ductility. Type HN is used for highly stressed components in the 1800-2000 F temperature range. It is used in the aircraft, automotive, petroleum, petrochemical and power industries for a wide range of components and parts. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: SS-410. Producer or source: Various stainless steel casting companies.

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The Influence of Bi2O3 on SiO2-Al2O3-B2O3-RO Glass Propertiesarts

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.887-888.86 ◽

2014 ◽

Vol 887-888 ◽

pp. 86-89

Author(s):

Ying Liang Tian ◽

Jing Zhang ◽

Shi Bing Sun ◽

Ji Ye Fan

Keyword(s):

Electrical Resistivity ◽

High Temperature ◽

Expansion Coefficient ◽

Bismuth Oxide ◽

Sintering Temperature ◽

Oxide Content ◽

Basic Composition ◽

Wide Range ◽

Melt Annealing ◽

Annealing Method

In the paper, regarded SiO2-Al2O3-B2O3-RO system as basic composition, high-temperature glass glaze was prepared successfully by using Bi2O3 in place of Al2O3, and traditional melt annealing method was adopted .The influence of Bi2O3 on expansion coefficient, sintering temperature, electrical resistivity was investigated by DIL-2008, SJY sintering imager, Keythley2410. The results show that the sintering temperature of glass glaze has a wide range, which can reach 270°C, so it is easy to sinter; with the increasing of bismuth oxide content, expansion coefficient of glass glaze gradually increases, whereas sintering temperature and electrical resistivity continuously decreases.

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Assembly-Free-Based Fiber-Optic Micro-Michelson Interferometer for High Temperature Sensing

IEEE Photonics Technology Letters ◽

10.1109/lpt.2015.2503276 ◽

2016 ◽

Vol 28 (6) ◽

pp. 625-628 ◽

Cited By ~ 13

Author(s):

Jinde Yin ◽

Tiegen Liu ◽

Junfeng Jiang ◽

Kun Liu ◽

Shuang Wang ◽

...

Keyword(s):

High Temperature ◽

Fiber Optic ◽

Michelson Interferometer ◽

Temperature Sensing

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Recent Advances in Development and Processing of Titanium Aluminide Alloys

MRS Proceedings ◽

10.1557/proc-646-n1.1.1 ◽

2000 ◽

Vol 646 ◽

Cited By ~ 4

Author(s):

Fritz Appel ◽

Helmut Clemens ◽

Michael Oehring

Keyword(s):

High Temperature ◽

Titanium Aluminide ◽

Titanium Aluminides ◽

Environmental Stability ◽

Physical Metallurgy ◽

Specific Strength ◽

Wide Range ◽

Structural Applications ◽

Strength And Stiffness ◽

Nickel Base

ABSTRACTIntermetallic titanium aluminides are one of the few classes of emerging materials that have the potential to be used in demanding high-temperature structural applications whenever specific strength and stiffness are of major concern. However, in order to effectively replace the heavier nickel-base superalloys currently in use, titanium aluminides must combine a wide range of mechanical property capabilities. Advanced alloy designs are tailored for strength, toughness, creep resistance, and environmental stability. Some of these concerns are addressed in the present paper through specific comments on the physical metallurgy and technology of gamma TiAl-base alloys. Particular emphasis is placed on recent developments of TiAl alloys with enhanced high-temperature capability.

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