ENTC 206 questions with complete solution 2023 passed

ENTC 206Among the different types of glass, which one is the only crystalline glass? - correct answer glass ceramic Which of the following manufacturing methods 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 ___ material - correct answer ferrous 5. The firing or densification process for a ceramic material is by heating the ceramic to _________. - correct answer Below melting temperature The key raw material for making Portland cement is ________ which accounts for more than 60% of the total weight. - correct answer Limestone The main ingredient of ferrite magnets is __________. - correct answer Iron oxides The typical micro structure of traditional ceramics consists of two phases, crystalline and amorphous. The cause of the amorphous phase is mainly due to the fact that most clay contain a certain amount of _______. - correct answer Silicates Which of the following glasses has the best thermal shock resistance? - correct answer fused silica The protective ceramic coating applied on a metallic base material such as that on a washing machine drum or some kitchen sinks is called __________. - correct answer enamel Which of the following ceramics is a good electric conductor, a very rare exception for ceramics? - correct answer graphite or tungesten