Transparent, Hydrophobic Composite Aerogels with High Mechanical Strength and Low High-Temperature Thermal Conductivities

2008 ◽  
Vol 112 (38) ◽  
pp. 11881-11886 ◽  
Author(s):  
Te-Yu Wei ◽  
Shih-Yuan Lu ◽  
Yu-Cheng Chang
Keyword(s):  
High Temperature ◽  
Mechanical Strength ◽  
High Mechanical Strength ◽  
Composite Aerogels ◽  
Thermal Conductivities

DMV 59

Alloy Digest ◽  
2009 ◽  
Vol 58 (8) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Mechanical Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Mechanical Strength ◽  
Temperature Performance

Abstract DMV 59 is the material of choice for a wide variety of applications where significant corrosion resistance and high mechanical strength is necessary. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: Ni-672. Producer or source: Mannesmann DMV Stainless USA Inc.

scholarly journals Development of Ceramic Turbocharger Rotors for High Temperature Use

1991 ◽  
Author(s):  
Hiroyuki Kawase ◽  
Tadaaki Matsuhisa ◽  
Kiminari Kato ◽  
Takeyuki Mizuno
Keyword(s):  
High Temperature ◽  
Silicon Nitride ◽  
Mechanical Strength ◽  
Impact Resistance ◽  
Exhaust Gas ◽  
Gas Temperature ◽  
High Mechanical Strength ◽  
Foreign Object Damage ◽  
Exhaust Gas Temperature ◽  
The Impact

A ceramic turbocharger rotor (CTR) for high temperature use has been developed. The features of this rotor are the use of silicon nitride which maintains high mechanical strength up to 1,200 °C and a new joining technique between the ceramic rotor and its metal shaft. The CTR is expected to cope with stoichiometrical mixture burning engines which produce a higher exhaust gas temperature for fuel economy, and the impact resistance of the rotor against foreign object damage (FOD) has been markedly increased, over that of earlier rotors, resulting in higher reliability. This paper describes the development of ceramic turbocharger rotors for high temperature use focusing on the mechanical strength of silicon nitride and the joining of the ceramic rotor and its metal shaft.

Analysis of a ceramic/metal laminate under thermal shock

2001 ◽  
Vol 16 (3) ◽  
pp. 753-764 ◽  
Author(s):  
D. Sherman ◽  
D. Schlumm
Keyword(s):  
High Temperature ◽  
Mechanical Strength ◽  
Thermal Shock ◽  
Room Temperature ◽  
Shock Loading ◽  
Structural Integrity ◽  
Experimental Results ◽  
High Mechanical Strength ◽  
Thermal Residual Stresses ◽  
Multilayered Systems

A ceramic/metal laminated system has lately been proposed by the authors. It is capable of maintaining high mechanical strength and structural integrity after high-temperature thermal shock. In this investigation, a multilayered, multimaterial system with strong interface, subjected to thermal shock loading, was analyzed. The analysis was based on a 1-D finite difference scheme and considers the thermal residual stresses. Using a failure criterion based on crack initiation, the number of broken layers due to thermal shock and the residual mechanical strength at room temperature was determined. A comparison with experimental results of three different lay-ups was made, demonstrating the ability of the program to predict the experimental results. The program was thus shown to be a significant tool for designing multimaterial multilayered systems for thermal shock applications.

Low-density graphene/carbon composite aerogels prepared at ambient pressure with high mechanical strength and low thermal conductivity

RSC Advances ◽  
2015 ◽  
Vol 5 (7) ◽  
pp. 5197-5204 ◽  
Author(s):  
Kang Guo ◽  
Zijun Hu ◽  
Huaihe Song ◽  
Xian Du ◽  
Liang Zhong ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Mechanical Strength ◽  
Compression Strength ◽  
Ambient Pressure ◽  
Carbon Matrix ◽  
Carbon Composite ◽  
Low Density ◽  
High Mechanical Strength ◽  
Low Thermal Conductivity ◽  
Composite Aerogels

SEM and TEM pictures show that GNSs can be well-dispersed in a carbon matrix. The resultant composite CAs exhibited high compression strength and extremely low thermal conductivity of 0.028 W m−1 K−1.

High-temperature corrosion resistance of SiO2-forming materials

2018 ◽  
Vol 36 (1) ◽  
pp. 65-74 ◽  
Author(s):  
Kazuya Kurokawa ◽  
Toto Sudiro ◽  
Tomonori Sano ◽  
Shoji Kyo ◽  
Osamu Ishibashi ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Mechanical Strength ◽  
Corrosion Behavior ◽  
Driving Force ◽  
Operating Temperature ◽  
High Temperature Corrosion ◽  
High Mechanical Strength ◽  
Increasing Demand ◽  
Plant Efficiency

AbstractAn increasing demand for electricity and preserving the environment has become a great driving force for the development of advanced boilers for coal-fired plants to improve their plant efficiency by raising the operating temperature. To achieve this purpose, the development of materials that possess a high mechanical strength and excellent resistance against corrosion at high temperatures is required. Considering such situation, the high-temperature corrosion behavior of SiO2-forming materials such as CrSi2-Ni and CoNiCrAlY-Si alloys in atmospheres containing NaCl and Na2SO4 is introduced. The SiO2 scale plays a significant role in suppressing the inward diffusion of sulfur and chlorine, resulting in the remarkable suppression of the formation of sulfide and chloride at the scale/substrate interface and inside of the substrate. Based on such results, it is emphasized that SiO2-forming materials show outstanding corrosion resistance against atmospheres containing NaCl and Na2SO4.

Fiber Reinforced Polyimide Aerogel Composites with High Mechanical Strength for High Temperature Insulation

2019 ◽  
Vol 304 (5) ◽  
pp. 1800676 ◽  
Author(s):  
Zhaoxian Zhu ◽  
Hongjun Yao ◽  
Fei Wang ◽  
Jinxin Dong ◽  
Kede Wu ◽  
...  
Keyword(s):  
High Temperature ◽  
Mechanical Strength ◽  
Fiber Reinforced ◽  
High Mechanical Strength

Development of Ceramic Turbocharger Rotors for High-Temperature Use

1993 ◽  
Vol 115 (1) ◽  
pp. 23-29 ◽  
Author(s):  
H. Kawase ◽  
K. Kato ◽  
T. Matsuhisa ◽  
T. Mizuno
Keyword(s):  
High Temperature ◽  
Silicon Nitride ◽  
Mechanical Strength ◽  
Impact Resistance ◽  
Exhaust Gas ◽  
Gas Temperature ◽  
High Mechanical Strength ◽  
Foreign Object Damage ◽  
Exhaust Gas Temperature ◽  
The Impact

A ceramic turbocharger rotor (CTR) for high-temperature use has been developed. The features of this rotor are the use of silicon nitride, which maintains high mechanical strength up to 1200°C, and a new joining technique between the ceramic rotor and its metal shaft. The CTR is expected to cope with stoichiometric mixture burning engines, which produce a higher exhaust gas temperature for fuel economy, and the impact resistance of the rotor against foreign object damage (FOD) has been markedly increased, over that of earlier rotors, resulting in higher reliability. This paper describes the development of ceramic turbocharger rotors for high-temperature use, focusing on the mechanical strength of silicon nitride and the joining of the ceramic rotor and its metal shaft.

SANDVIK 10RE51

Alloy Digest ◽  
1997 ◽  
Vol 46 (3) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Mechanical Strength ◽  
Physical Properties ◽  
Stainless Steels ◽  
Heat Treating ◽  
Good Resistance ◽  
High Mechanical Strength ◽  
Temperature Performance

Abstract Sandvik 10RE51 is a ferritic/austenitic duplex chromium-nickel stainless steel with both good resistance to pitting in aqueous solutions and good machinability. The alloy is often used over 300 series stainless steels when high mechanical strength is required. 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, and joining. Filing Code: SS-676. Producer or source: Sandvik.

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