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.

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.

A room-temperature self-healing elastomer with ultra-high strength and toughness fabricated via optimized hierarchical hydrogen-bonding interactions

2022 ◽  
Author(s):  
Liangliang Xia ◽  
Ming Zhou ◽  
Hongjun Tu ◽  
wen Zeng ◽  
xiaoling Yang ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Mechanical Strength ◽  
Room Temperature ◽  
Polymeric Materials ◽  
High Strength ◽  
Self Healing ◽  
High Mechanical Strength ◽  
Hydrogen Bonding Interactions ◽  
Healing Efficiency ◽  
Good Healing

The preparation of room-temperature self-healing polymeric materials with good healing efficiency and high mechanical strength is challenging. Two processes are essential to realise the room-temperature self-healing of materials: (a) a...

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.

Research on Reaction Mechanism of SiC and AlF3 in CO Atmosphere

2011 ◽  
Vol 233-235 ◽  
pp. 2610-2614
Author(s):  
Jia Ping Wang ◽  
Yong Li ◽  
Xiao Yan Zhu ◽  
Jun Bo ◽  
Jian Fang Zhang ◽  
...  
Keyword(s):  
High Temperature ◽  
Reaction Mechanism ◽  
Room Temperature ◽  
Aluminum Electrolysis ◽  
Experimental Results ◽  
Reaction Products ◽  
Operation Temperature ◽  
Electrolysis Cells ◽  
Major Reaction ◽  
Reaction Intensity

The reaction between SiC and AlF3 has been investigated in CO atmosphere at high temperature. Experimental results are shown that the reaction intensity between SiC and AlF3 is accelerated with the rise of temperature. At the temperature of 950 (aluminum electrolytic operation temperature is 935±15), the reaction intensity of SiC and AlF3 is not high and the major reaction products are SiF4 gas and Al4C3; Al4C3 occur severe hydration at room temperature which leads to the pulverization of specimens. The unexpected cells stop should try to be avoided or reduced during the usage of Si3N4-bonded SiC sidewall brick in aluminum electrolysis cells because of Al4C3 existents possibly.

scholarly journals Effect of Fibre and Microsilica Incorporation on High Temperature Resistance of Cementitious Complex Binder

1970 ◽  
Vol 17 (1) ◽  
pp. 69-72
Author(s):  
Regina KALPOKAITĖ-DIČKUVIENĖ ◽  
Kristina BRINKIENĖ ◽  
Jūratė ČĖSNIENĖ ◽  
Algis MAKŠTYS
Keyword(s):  
High Temperature ◽  
Thermal Treatment ◽  
Mechanical Strength ◽  
Firing Temperature ◽  
Experimental Results ◽  
Thermal Shrinkage ◽  
Crushing Strength ◽  
Temperature Resistance ◽  
Cold Crushing Strength ◽  
Complex Binder

Complex binder reinforced with microfibre produced from waste catalyst was investigated. Influence of 1, 3 and 5 % of fibre as well as 5 % of microsilica on the mechanical strength of complex binder after thermal treatment at 600, 800 and 1000 °C temperature was analyzed. According to the experimental results reinforcement with 1 % of fibre had advantage on mechanical strength of complex binder up to 800 °C, meanwhile 5 % of fibre resulted in the lowest values of strength in all firing temperature range. The strength of dry samples was improved with microsilica incorporation. But above 800 °C temperature cold crushing strength as well as thermal shrinkage of binder reinforced with fibre and microsilica was lower in comparison with ordinary complex binder at 1000 °C.http://dx.doi.org/10.5755/j01.ms.17.1.253

Processing, mechanical properties and oxidation behavior of TaC and HfC composites containing 15 vol% TaSi2 or MoSi2

2009 ◽  
Vol 24 (6) ◽  
pp. 2056-2065 ◽  
Author(s):  
Diletta Sciti ◽  
Laura Silvestroni ◽  
Stefano Guicciardi ◽  
Daniele Dalle Fabbriche ◽  
Alida Bellosi
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
High Temperature ◽  
Mechanical Strength ◽  
Hot Pressing ◽  
Room Temperature ◽  
Oxidation Behavior ◽  
Temperature Stability ◽  
High Temperature Stability ◽  
Better Than

Fully dense HfC and TaC-based composites containing 15 vol% TaSi2 or MoSi2 were produced by hot pressing at 1750–1900 °C. TaSi2 enhanced the sinterability of the composites and nearly fully dense materials were obtained at lower temperatures than in the case of MoSi2-containing ones. The TaC-based composites performed better than HfC composites at room temperature, showing values of mechanical strength up to 900 MPa and a fracture toughness of 4.7 MPa·m1/2. However, preliminary oxidation tests carried out in air at 1600 °C revealed that HfC-based composites have a superior high temperature stability compared to TaC-based materials.

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