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Questions and Answers
What is the primary function of silica in traditional ceramics?
Which of the following is a characteristic of feldspar?
What is the general term for ceramics that include oxides, carbides, and nitrides?
Which of the following is an example of oxide ceramics?
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What is the chemical formula for silica?
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Which of the following is a characteristic of traditional ceramics?
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What is the type of ceramic that includes carbides and nitrides?
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What is the chemical formula for feldspar?
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Which of the following is not a type of traditional ceramic?
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What is the primary function of feldspar in traditional ceramics?
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Study Notes
NITRIDES and GLASS
- Glass has a high quantity of Silica (SiO2)
- Other ingredients are present in glass besides Silica
ELEMENTS RELATED TO CERAMICS
CARBON
- Graphite and Diamond are two forms of Carbon
SILICON
- Applications of Silicon:
- Used as a reducing agent in certain metallurgical processes
- Base material in semiconductor manufacturing in electronics
BORON
- No specific applications or properties mentioned
STRENGTH PROPERTIES OF CERAMICS
COMPRESSIVE STRENGTH IN CERAMICS
- Classification of composites based on Matrix:
- PMC – Polymer Matrix composites
- MMC – Metal Matrix composites
- CMC – Ceramic Matrix composites
- Functions of the Matrix Material:
- Protect phases from environment
- Transfer Stresses to phases
- Share load with secondary phase, in some cases deforming to bear stress
- Why Composites are Important:
- High strength-to-weight and stiffness-to-weight ratios
- Better fatigue properties than common engineering metals
- Higher toughness
- Resistance to corrosion
- Possible to achieve combinations of properties not attainable with metals, ceramics, or polymers alone
CLASSIFICATION BASED ON REINFORCEMENT
- Classification of composites based on reinforcement:
- Particle Reinforcement composites
- Structural Composites
- Fiber Reinforcement composites
- fiber reinforcement types:
- Continuous fibers with unidirectional aligned
- Discontinuous fiber and unidirectional aligned
- Discontinuous fiber and randomly oriented
PARTICLE REINFORCED COMPOSITE
- Characteristics:
- Cheapest and most widely used
- Fall into two categories based on particle size:
- Large-Particle Composites
- Dispersion-Strengthened Composites
- Examples:
- Concrete, ceramics, filled polymers
- TDNickel with 3% of Thoria
FELDSPAR
- A naturally occurring, industrially important, network silicate with a low melting temperature
- Becomes glass upon firing and bonds refractory components together
- Composition: K2O Al2O3 6SiO2
SILICA (SiO2)
- A polymorphic compound with various forms (quartz, tridymite, and cristobalite)
- Acts as the refractory component of traditional ceramics
CERAMICS
THREE BASIC CATEGORIES OF CERAMICS
- Traditional Ceramics
- New Ceramics
TRADITIONAL CERAMICS
- Examples:
- Clay
- Silica (SiO2)
- Alumina
NEW CERAMICS
- Examples:
- Oxide Ceramics
- Carbides
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Description
This quiz covers the basics of glass and nitrides, including their composition and properties.
