Feasible organic films using noninterfering emitters for sensitive and spatial high-temperature sensing

2018 ◽  
Vol 6 (30) ◽  
pp. 8115-8121 ◽  
Author(s):  
Qiyun Fang ◽  
Ying Li ◽  
Yingnan Wang ◽  
Feng Yao ◽  
Shuangqing Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Relative Sensitivity ◽  
Temperature Sensing ◽  
Organic Films ◽  
Wide Range

Wide-range and spatially thermo-sensitive ratiometric films have been realized with a maximum relative sensitivity of 6.32% K−1 at 440 K.

Visualized Real‐Time and Spatial High‐Temperature Sensing in Air‐Stable Organic Films

2020 ◽  
Vol 5 (10) ◽  
pp. 1901035
Author(s):  
Feng Yao ◽  
Mengfei Kong ◽  
Bohan Yan ◽  
Ying Li ◽  
Qingyi Guo ◽  
...  
Keyword(s):  
High Temperature ◽  
Real Time ◽  
Temperature Sensing ◽  
Organic Films

La0.4Gd1.6Zr2O7:0.1%Pr transparent sintered ceramic – a wide-range luminescence thermometer

2020 ◽  
Vol 8 (21) ◽  
pp. 7005-7011
Author(s):  
Joanna Trojan-Piegza ◽  
Carlos D. S. Brites ◽  
João F. C. B. Ramalho ◽  
Zhengjuan Wang ◽  
Guohong Zhou ◽  
...  
Keyword(s):  
High Temperature ◽  
Relative Sensitivity ◽  
Transparent Ceramic ◽  
Temperature Sensitive ◽  
Sintered Ceramic ◽  
Wide Range

High-temperature-sensitive La0.4Gd1.6Zr2O7:0.1%Pr3+ sintered transparent ceramic luminescence thermometer with a constant thermal relative sensitivity of 0.81% K−1 between 15 and 600 K is presented.

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

2017 ◽  
Vol 53 (42) ◽  
pp. 5702-5705 ◽  
Author(s):  
Qiyun Fang ◽  
Jiewei Li ◽  
Shayu Li ◽  
Ruihong Duan ◽  
Shuangqing Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Excited States ◽  
Temperature Sensing ◽  
Wide Range

Using thermally populated brighter excited states, organic sensors have been developed for wide-range and high temperature sensing in air.

scholarly journals LiAl5O8:Fe3+ and LiAl5O8:Fe3+, Nd3+ as a New Luminescent Nanothermometer Operating in 1st Biological Optical Window

Nanomaterials ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 189 ◽  
Author(s):  
Karolina Kniec ◽  
Marta Tikhomirov ◽  
Blazej Pozniak ◽  
Karolina Ledwa ◽  
Lukasz Marciniak
Keyword(s):  
High Temperatures ◽  
Emission Intensity ◽  
Biological Systems ◽  
Relative Sensitivity ◽  
Temperature Sensing ◽  
Optical Window ◽  
Wide Range ◽  
Cytotoxicity Assessment ◽  
First Time

New types of contactless luminescence nanothermometers, namely, LiAl5O8:Fe3+ and LiAl5O8:Fe3+, Nd3+ are presented for the first time, revealing the potential for applications in biological systems. The temperature-sensing capability of the nanocrystals was analyzed in wide range of temperature (−150 to 300 °C). The emission intensity of the Fe3+ ions is affected by the change in temperature, which induces quenching of the 4T1 (4G) → 6A1 (6S) Fe3+ transition situated in the 1st biological window. The highest relative sensitivity in the temperature range (0 to 50 °C) was found to be 0.82% °C (at 26 °C) for LiAl5O8: 0.05% Fe3+ nanoparticles that are characterized by long luminescent lifetime of 5.64 ms. In the range of low and high temperatures the Smax was calculated for LiAl5O8:0.5% Fe3+ to be 0.92% °C at −100 °C and for LiAl5O8:0.01% Fe3+ to be 0.79% °C at 150 °C. The cytotoxicity assessment carried out on the LiAl5O8:Fe3+ nanocrystals, demonstrated that they are biocompatible and may be utilized for in vivo temperature sensing. The ratiometric luminescent nanothermometer, LiAl5O8:Fe3+, Nd3+, which was used as a reference, possesses an Smax = 0.56%/°C at −80 °C, upon separate excitation of Fe3+ and Nd3+ ions using 266 nm and 808 nm light, respectively.

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

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.

TEM study of boron additions to cobalt aluminide

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.

PLATINUM

Alloy Digest ◽  
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..

ACI TYPE HN

Alloy Digest ◽  
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.

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

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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