lecture 1 from earth to space

1From Earth to Space

W. C. J. Wei, ProfessorNational Taiwan University2/24/2007

-Early ceramics

Traditional ceramics

Advanced ceramics

2Early ceramics C-14, 9000~10000 BC Firing of earth Plasticity of wet earth

:http://home.hiroshima-u.ac.jp/maibun/knB-ibutu01.html

Functions of Ceramics Storage of Water Process of Food

Development of Farming age Refractory for metal casting Kiln for ceramic firing

Traditional ceramics (coarse earthenware) (stoneware) (translucent porcelain)

(12 century)

3Traditional ceramics

1.()

2.12001000

3.4.

5. 6.

http://www.npm.gov.tw/exhbition/song/nature/8.htm

Traditional Glasses Ca. 3000 BC Ingredient SiO2 and low

temperature flux (Na2O etc.)

http://arts.tom.com/Archive/1002/2003/3/19-36218.html

Corning glass museum

4Advanced ceramics From Tradition to Modern Ceramics

(1) Structural Ceramics(2) Electronic ceramics(3) Bio-ceramics(4) others:

Questions1. What are Ceramics?

A1: a non-metallic solid with a mixture of covalent and ionic bonds

A2: a solid compounds that comprise at least one metallic and nonmetallic elemental solid, orA combination of at least two non-metallic elemental solids and a nonmetal

5Questions2. What are the differences between crystalline and

amorphous Ceramics?A1: long-range and short-range order in structure

A2: ????

Questions3. What are the basic crystalline structures?

A1: an order structure consisted of cationic and anionic atoms.

A2: see the attached figure

6Questions4. What are the microstructural characteristics of Ceramics?

Questions5. Traditional vs. Advanced Ceramics?

A1: silicate or non-silicate ceramics?

A2: The ceramics made by synthetic or nature materials (powders)?

A3: The ceramics made by modern technologies?

All wrong!

7Questions6. General properties of Ceramics?

A1: Hard?A2: Wear Resistant?A3: Brittle?A4: Prone to thermal shock?A5: refractory?A6: electrical insulative?A7: Thermal insulative?A8: Transparent?A9: non-magneticA10: Chemical stable?A11:oxidation resistantetc

Give the opposite cases!

Technologies in 20th century

Functional Ceramics Electronic Ceramics Structural Ceramics Bio-ceramics Environ-ceramics

81. Electronic Ceramics

1.2.

(a)(b)(c) (d) (e) etc.

4. (better than the others)

Functional Ceramics Electronic Ceramics Structural Ceramics Bio-ceramics Enviro-ceramics

Application of Advanced ceramics Electronic Insulator

-Spark plug, insulator-Al2O3 based ceramics withgood electric insulationgood heat dissipationstrong in strength

www.offroadbike.idv.tw/ ngkplug1.html

92. Dielectric Ceramics ()

SMT

3. Piezo-Electric Ceramics ()STM PZTPMN-PT

DRAM

:www.adata.com.tw/en/ products-d-un-ddr400.htm

STM

: www.specs.com/ pages/products.htm

4. Magnetic Ceramics ()

:

10

Gem stone: the diamond

: 20033Mark Fischettihttp://www.sciam.com.tw/circus/circusshow.asp?FDocNo=188&CL=9


www.csh.com.tw/Doctor/ 1024/new_page_25.htm

Bio-Ceramics

(femoral head and cup)

Mittelmeier www.csh.com.tw/Doctor/ 1024/new_page_7.htm


11

Environ-materialsFunctional Ceramics Electronic Ceramics Structural Ceramics Bio-ceramics Environ-ceramics

1. Energy Materials: Solar cell, Fuel Cell, etc.

2. Environmental-friendly Materials and Processes3. Sustainable Materials and Processes

Please fill the question set!

What is the major concept that you learn in this section?

What is/are the question/s still not answered in the class?

12

M. Barsoum, Fundamentals of Ceramics, 2000 1990F. H.

Norton1977 http://home.hiroshima-u.ac.jp/maibun/knB-ibutu01.html http://www.nmgtz.net/saiwaifengjing/minsu/menggubao.htm http://www.npm.gov.tw/exhbition/song/nature/8.htm http://arts.tom.com/Archive/1002/2003/3/19-36218.html http:// www.offroadbike.idv.tw/ ngkplug1.html http://www.adata.com.tw/en/ products-d-un-ddr400.htm http://www.specs.com/ pages/products.htm

http://www.sciam.com.tw/circus/circusshow.asp?FDocNo=188&CL=9 http://www.csh.com.tw/Doctor/ 1024/new_page_25.htm http://www.csh.com.tw/Doctor/ 1024/new_page_7.htm http://www.che.ntu.edu.tw/lab/ceramics/online-study.htm

lecture 1 from earth to space

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