ENTC 206 Combo questions & answers graded A+ 2023

ENTC 206 Combo Which of the follow material properties does not belong to fused silica? a. High Tg b. visible to UV ray c. low coefficient of thermal expansion d. excellent electrical insulation e. optical transparency f. chemical inertness - correct answer b Among the different types of glass, which is the only crystalline one? - correct answer Ceramic Glass Which manufacturing method can significantly improve the mechanical strength of a ceramic product? - correct answer sintering Diamond is the hardest material known to humans. It is an excellent abrasive for making grinding wheels for machining of various materials. However, the diamond grinding wheel can NOT be used for grinding - correct answer steel The firing or densification process for a ceramic material is by heating the ceramic to - correct answer below its Tm The key raw material for making Portland cement is - correct answer limestone limestone accounts for more than __% of the total weight of Portland cement - correct answer 60% The main ingredient of ferrite magnets is - correct answer iron oxide