A type of ceramic with a mixture of lime (CaO), silica, (Si)2), and alumna (Al203) which sets when mixed with water O glass O porcelain O pottery O cement
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- 36- At Powder Pressing of ceramic, the function of binder is ….. * a- decreasing of porosities. b- lubrication of particles. 37- Ceramic substrates that are used for integrated circuits and layered capacitors are manufactured by ……. * b- tape casting. a- rolling. 38- Material which has no fixed solidification temperature, is considered as…. * a- crystalline. b- glass. 39- Refractories that are rich in magnesia (MgO) are termed…… * a- Acidic. b- Basic. 40- The function of Feldspar is …… * a- filler. b- flux. c- plastic material.How much dopant is present in 107 kgkg of semiconductor with a dopant concentration of 2.00 ppmppm by mass?Q: sintering means: a.Shock cooling of molten glass to make frits. b.The molecular bonding of ceramic particles below their melting point. c.Melting of non-refractory clay constituents. d.Condensation of constituent particles to form greenware.
- 2. What is glass-ceramic? Please explain the differences between glass and glass & ceramics ? (Please consider microstructures and mechanical behavior etc.) a) If you want to obtain transparent diopside glaze, which oxides/raw materials will you choose, why? What parameters will you pay attention to create these crystals? Why? b) When you prepared transparent anorthite glaze, you realized that, this glaze did not show transparent property and it was completely opaque. What are the reasons for this effect? How will you solve this problem? Please explain ?JJ Techie calcined some ceramic powders at 1600℃ for 12 hrs, when removed from thefurnace, JJ was upset to find a big hard lump., After grinding up to the lump, someone told JJ to add a sintering aid and deflocculant to the ceramic before trying to press it into cylinders 10 inch by 0.25 inch in diameter. How could JJ do this well? JJ needs this size ceramic rod for experiments.True or false 1_ For marine structure, a cement that is high sulfate resistance and lower ettringite are needed. 2_Low-heat Portland cement has less C2S and more C3S
- The density of the classified vibranium steel alloy of captain america is suprosinglylow 1.56g/cm^3. knowing the shape of the shield can be properly approximated to a cylinder of radius of 42,9 cm and height of 5.54nm. how heavy is the shape in kgWhat is the difference between the hardening process of Portland ce-ment and the hardening process of clays?What are Non=Oxide-Ceramic? Give some examples?
- 11) JJ Techie calcined some ceramic powders at 1600℃ for 12 hrs, when removed from the furnace, JJ was upset to find a big hard lump. Explain to JJ what happened. b) After grinding up to the lump, someone told JJ to add a sintering aid and deflocculant to the ceramic before trying to press it into cylinders 10 inch by 0.25 inch in diameter. Do you have any suggestions for JJ? JJ needs this size ceramic rod for experiments.Limestone containing 89% CaCO3 and 11% Si02 is to be used as a flux in a process that forms a slag having the formula CaSiO3. Calculate the percentage of free lime in the flux.What is an interstitial alloy?