EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 8220100793431
Author: KALPAKJIAN
Publisher: PEARSON
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Chapter 8, Problem 55SDP
To determine
Discuss the properties of ceramic filament and give an explanation behind ceramic being a suitable material. Carry and internet search to know the specific ceramic material used in electric space heaters at home.
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3. Define a ceramic material and state the 5 properties that is
common to ceramic material.
Intense research is underway to develop adiabatic engines that require no cooling of the engine block. Such engines are based on ceramic materials because of the ability of such materials to withstand high temperatures. Write an essay on the current status of adiabatic engine development. Also determine the highest possible efficiencies with these engines, and compare them to the highest possible efficiencies of current engines.
Question Seven
(a) For refractory ceramic materials, cite two characteristics that improve with and two characteristics
that are adversely affected by increasing porosity.
(b) Show that the minimum cation-to-anion radius ratio for a coordination number of 4 is 0.225.
(Hint: Use the AX crystal structure, assuming the anion spheres touch in plane).
(c) The unit cell for Al>Os has hexagonal symmetry with lattice parameters a = 0.4759 nm and c 1.2
nm. If the density of this material is equal to 3.99 g/cm' and is calculated according to the formula
n'(E Ac+ EAA)
V.NA
Calculate the atomic packing factor for Al>O, given that the ionic radius for AI is 0.053 nm and i
0' is 0.140 nm. Take N, = 6.023 x 1023 atoms/mole.
(d) Mention any three industrial ceramics and indicate their applications.
Chapter 8 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 8 - What is a ceramic?Ch. 8 - List the major differences between the properties...Ch. 8 - List the major types of ceramics that are useful...Ch. 8 - What do the following materials typically consist...Ch. 8 - Prob. 5RQCh. 8 - Prob. 6RQCh. 8 - Prob. 7RQCh. 8 - Prob. 8RQCh. 8 - Prob. 9RQCh. 8 - Prob. 10RQ
Ch. 8 - Prob. 11RQCh. 8 - Prob. 12RQCh. 8 - Prob. 13RQCh. 8 - Prob. 14RQCh. 8 - Prob. 15RQCh. 8 - Prob. 16RQCh. 8 - Prob. 17RQCh. 8 - Prob. 18RQCh. 8 - Explain why ceramics are weaker in tension than in...Ch. 8 - What are the advantages of cermets? Suggest...Ch. 8 - Explain why the electrical and thermal...Ch. 8 - Prob. 22QLPCh. 8 - Prob. 23QLPCh. 8 - Explain why the mechanical properties of ceramics...Ch. 8 - Explain how ceramics can be made tougher.Ch. 8 - List and describe situations in which static...Ch. 8 - What properties are important in making...Ch. 8 - A large variety of glasses is now available. Why...Ch. 8 - Prob. 29QLPCh. 8 - Prob. 30QLPCh. 8 - Aluminum oxide and PSZ are described as white in...Ch. 8 - Why does the strength of a ceramic part depend on...Ch. 8 - In old castles and churches in Europe, the glass...Ch. 8 - Prob. 34QLPCh. 8 - Prob. 35QLPCh. 8 - Perform an Internet search and determine the...Ch. 8 - Prob. 37QLPCh. 8 - Prob. 38QLPCh. 8 - In a fully dense ceramic, UTSO = 200 MPa and EO =...Ch. 8 - Plot the UTS, E, and k values for ceramics as a...Ch. 8 - What would be the tensile strength and the modulus...Ch. 8 - Prob. 42QTPCh. 8 - Prob. 43QTPCh. 8 - Prob. 44QTPCh. 8 - Prob. 45SDPCh. 8 - Prob. 46SDPCh. 8 - Prob. 47SDPCh. 8 - Prob. 48SDPCh. 8 - Prob. 49SDPCh. 8 - Prob. 50SDPCh. 8 - Conduct a literature search and write a brief...Ch. 8 - Prob. 52SDPCh. 8 - Prob. 53SDPCh. 8 - It has been noted that the strength of brittle...Ch. 8 - Prob. 55SDP
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- a) : What is sintering process and classification of Ceramics? (b) : Explain the different types of ceramics materials, its properties and applications.arrow_forwardThank youarrow_forwardYou are an engineer working for a manufacturer of land-based gas turbines. These turbines are similar to jet engines, but they are used on land to provide power for electricity generation and gas compression pipeline applications. Suppose that you would like to apply a ceramic-based thermal barrier coating to the turbine blades in the first-stage turbine to increase the operating temperature and efficiency of the engine.(a) What difficulties might engineers experience in trying to design a ceramic coating that will be apparrow_forward
- What are ceramics? List and briefly explain five important properties of ceramics that make them useful engineering materials.arrow_forwardWhich of the following is/are TRUE about the comparison of metal and ceramic properties? O Metals: Uniform atoms, Ceramics: different sizes of atoms O Metals: Good Ductility, Ceramics: Brittle O Metals: crystal structure, Ceramics: crystal structure, O Metals: many free electrons, Ceramics: captive electronsarrow_forwardIdentify the ceramic that has no crystal structure and mention the way to improve the properties of that ceramic with an application.arrow_forward
- Are ceramics (clay) considered a synthetic material? Why or why not? #EngineeringMaterials #MaterialsandScienceEngineeringarrow_forward(b) Using the material selection chart provided (Figure 1) and appropriate design guideline. (ii) Explain the reasons for the final choice of one material considering high strength as a requirement. Even though ceramic materials possess high strength, explain why (ii) ceramics would not be suitable in this case.arrow_forwardWhat are the importance of Ceramics in Engineering? Give some examplesarrow_forward
- Ceramics are used in die blanks and in cutting tools. Which main material properties of the ceramics used for these applications make them well suited for this purpose? Select one or more: a. High hardness b. High ductility c. High wear resistance d. Low wear resistance e. Low coefficient of frictionarrow_forwardCeramics are used in die blanks and in cutting tools. Which main material properties of the ceramics used for these applications make them well suited for this purpose? Select one or more: a. Low wear resistance b. High ductility c. Low coefficient of friction d. High wear resistance e. High hardnessarrow_forwardNowadays, many cooking utensils are made of polymeric materials. However, people believe that heating plastic utensils would cause harm such as releasing toxic substances. Hence, people are looking for other alternatives to replace plastic. Choose ONE cooking utensil (spatula) and identify the suitable material that will satisfy its criteria. Justify your answer. Your discussion must include the interrelationship between structure-properties-processing of the selected cooking utensil.arrow_forward
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