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- If you want to determine the glass transtion tempreture (Tg), softening point (Ts), melting point (Tm) and crystallization temperatures (Tc) of the glass-ceramics which characterization techniques can be used? Plase expain in details.For the alloy Mg-45 wt% Pb alloy at 500 C, what is the weight percentage of Pb in liquid?A sample of mineral containing water as the onlyvolatile constituent contains 26.40% SiO2 and8.86% H2O. What is the corrected percentage of SiO2(%SiO2) in the material after sufficient heating to drive off allof the water?
- Give some detail on how new ceramics are used in manufacturing and illustrate the processing method.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.11) JJ Techie calcined some ceramic powders at 1600℃ for 12 hrs, when removed from thefurnace, JJ was upset to find a big hard lump. Explain to JJ what happened. (10 points)12) Continue to Question 9, After grinding up to the lump, someone told JJ to add a sintering aidand deflocculant to the ceramic before trying to press it into cylinders 10 inch by 0.25 inch indiameter. Do you have any suggestions for JJ? JJ needs this size ceramic rod for experiments. Number 12 please the information in question 11 is applicable.
- Cu and Ni form a substitutional solidsolution. This means that the crystal structureof a Cu-Ni alloy consists of Ni atomssubstituting for Cu atoms in the regularatomic positions of the FCC structure. Fora Cu-30% wt.% Ni alloy, what fraction ofthe atomic sites does Ni occupy?A single crystal Ni (in FCC) alloy bar is uniaxially pulled along [-123]. The bar starts to yield at σ =100MPa by slipping on (111)[-101] which hence is the most favorable slip system.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.
- why spontainiety occur??Give the five examples for glass forming materials. What is the role of modifiers in glass making. what advantages intermediates bring in glass formation? Marks Note- take your time but please give proper answer.EASSY ABOUT SURFACE CHARACTERIZATION OF COPPER NANOPARTICLE USING TEM
