Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"Thermal Shock Resistance"”.
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Thermal shock resistance of ceramics.
Thesis: M.S., Massachusetts Institute of Technology, Department of Metallurgy and Materials Science, 1973
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Improving the thermal shock resistance of zirconium diboride ceramics
"This research has focused on improving the thermal shock resistance of zirconium diboride (ZrB₂) based ceramics. Despite the development of ZrB₂-based materials for their use in high temperature applications, the thermal shock properties have not been investigated extensively. Materials expected …
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Improving the thermal shock resistance of silicon carbide ceramics
… of the Ph.D. research has been to increase the thermal shock resistance of silicon carbide (SiC) based ceramics. Several applications utilize SiC in conditions generating thermal stresses, including but not limited to, heat exchangers, rocker nozzles, turbo charger rotors and combustion engine …
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Novel diesel particulate filters containing fine ceramic fibres
… particulate via combustion), and in improved thermal shock resistance. To contribute to these aims, this work focuses on creating novel composite materials through the introduction of fine ceramic fibres. Filtration efficiency is considered by experimental measurement of porosity and …
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Ancient engineering : selective ceramic processing in the Middle Balsas Region of Guerrero, Mexico
… with varying materials properties, such as thermal shock resistance and permeability. These properties are differentially useful for certain tasks, such as cooking or water-cooling. In certain cases, such as the use of shell temper in North America, an improvement in thermal shock resistance …
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Pottery engineering in ancient Guerrero, Mexico : the site of Las Fundiciones
… to a variety of chemical, mechanical, and thermal tests to determine their material properties. Clays are matched with petrographic groupings of potsherds, showing that potters were using local clays. The clays are ranked according to their ability to withstand thermal shock, since this is …
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Ultrasonic Pyrometer for Industrial Applications
… suited for ceramic sensors which have poor thermal shock-resistance, User tests on a nuclear reactor, a jet engine and in molten lead established the practicality of these probes, A literature study of melting point, elastic constant, internal friction and thermal shock-resistance, the most …
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Corrosion resistant CMZP and Mg-Al2TiO5coatings for SiC ceramics
… coated with CMZP and Mg-Ah TiOs exhibited good thermal shock resistance and greatly improved the high temperature alkali corrosion resistance.
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Alkali attack on coal gasifier refractory lining
… from the reaction surface which causes poor thermal shock resistance and eventual refractory failure. The hot face of an alumina-chrome refractory in service in an alkali environment will be prone to failure by alkali attack.
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The development and characterization of lightweight (CA,MG) ceramics
… with pores 250-300 μm in diameter. The thermal expansion of the lightweight CMZP ceramics varies from positive (+2.7x1 0⁻⁶/â C) to negative (-2.6x10⁻⁶/ â C) with increasing grain size. The lightweight CMZP ceramics exhibit an excellent thermal shock resistance and this resistance is …
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An investigation of low expansion cordierite-zirconia bodies
… the addition of zirconia without increasing the thermal expansion above 4.0 x 10⁻⁶ cm./cm./°c. A procedure has been presented for making the compound cordierite. Several raw batch compositions which can be expected to produce a high percentage of relatively pure cordierite on a one-fire basis are …
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Fullerene C60 based nanostructures by self-assembly and molecular recognition
… because of their low atomic number, superior thermal shock resistance, higher melting temperature (graphite sublimes at ~3600K), high thermal conductivity and low neutron activation. So, studying how irradiation changes the structure and properties of solid targets is necessary in order to …
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A study on thermal conductivity of six unexplored Nigerian clays for possible refractory and insulating materials
… and chemical based materials, with high heat resistance properties. Refractory manufacturing typically uses clay as the main raw material. The study aims to investigate six unexplored Nigerian clay based on the suitability of their chemical, physical, mechanical and thermal properties as …
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Synthesis and characterization of ultralow thermal expansion NZP- type compounds
New ultra-low thermal expansion materials, based on the NZP structure, have been developed and evaluated for future application in ceramic diesel engines which require exceptional thermal shock resistance. Twenty-four cation substitutions, with electron valence ranging from +1 to +5, were used to …
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Study of Titanium based Composite Coatings for Resistance against Molten Aluminium Soldering on H13 Tool Steel
… and also damages the die surface. The use of thermal spray coatings provides protection to the surfaces operating in severe environments. An HVOF thermally sprayed coating has the advantage of having excellent bond strength and very low porosity levels (< 1%). This research work is concerned …
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Development of a Novel Thermal Shock test for isostatically Pressed Carbon-Bonded Refractories
In refractory engineering, assessing thermal shock resistance is crucial for flow-control components such as ladle shrouds, tundish nozzles, and slide gates. Chemical, mechanical, and thermal degradation of these parts can produce severe safety, environmental and economic consequences in steel …
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An Investigation into the Potential Creative Applications of Refractory Concrete
… green and fired toughness and strength, thermal shock resistance, ceramic glaze compatibility, thixotropic effects and rapid setting. These properties offer the opportunity to achieve the creation of objects that do not conform to some of the traditional limitations of conventional clay. …
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Microstructural characterization of a plasma sprayed ZrO2-Y2O3-TiO2 thermal barrier coating
The use of plasma sprayed ceramic coats as thermal barrier coatings (TBCs) for the protection of metallic structures and equipment from severe thermal, abrasive and corrosive conditions has been documented extensively in the last two decades. The state-of-the-art TBCs consist of a double layer …
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Developing a low-cost ceramic micro-porous water filter for removal of microorganisms that cause common diseases
… alumino-silicate had the main advantages of thermal shock resistance and dimensional stability because of the material’s zero thermal expansion at firing temperatures. Milling tests based on the Andreasen packing model were used for obtaining the best particle packing for the raw material …
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Studio del comportamento meccanico di smalti porcellanati per substrati metallici
… performances such as corrosion(2) and wear resistance, mechanical strength, fracture toughness and also aesthetic functions. The coating process, called enamelling, depends on the nature of the surface, but also on the kind of the used porcelain enamel. For metal sheets coatings two …
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