(a)
Interpretation:
The given material cobalt/tungsten carbide has to be classified as ceramic-ceramic or ceramic-metal and or ceramic polymer.
Concept introduction:
Ceramic composites:
Materials which are inorganic, non-molecular solids, crystalline (quartz) and amorphous (glass) are known as ceramics. Ceramics are brittle in nature and susceptible to break. They are hardened by combining ceramic powder before sintering with fibers such as boron and silicon carbide. The obtained hybrid materials are known as ceramic composites.
Ceramic-metal composites:
Similar to ceramic composites but in this composite fiber and matrix are made of ceramic and metal. Example: Aluminum-strengthened boron fiber.
Ceramic-polymer composites:
Similar to ceramic composites but in this composite fiber and matrix are made of ceramic and
(b)
Interpretation:
The given material silicon carbide/zirconia has to be classified as ceramic-ceramic or ceramic-metal and or ceramic polymer.
Concept introduction:
Ceramic composites:
Materials which are inorganic, non-molecular solids, crystalline (quartz) and amorphous (glass) are known as ceramics. Ceramics are brittle in nature and susceptible to break. They are hardened by combining ceramic powder before sintering with fibers such as boron and silicon carbide. The obtained hybrid materials are known as ceramic composites.
Ceramic-metal composites:
Similar to ceramic composites but in this composite fiber and matrix are made of ceramic and metal. Example: Aluminum-strengthened boron fiber.
Ceramic-polymer composites:
Similar to ceramic composites but in this composite fiber and matrix are made of ceramic and polymers. Example: carbon-epoxy.
(c)
Interpretation:
The given material boron nitride/epoxy has to be classified as ceramic-ceramic or ceramic-metal and or ceramic polymer.
Concept introduction:
Ceramic composites:
Materials which are inorganic, non-molecular solids, crystalline (quartz) and amorphous (glass) are known as ceramics. Ceramics are brittle in nature and susceptible to break. They are hardened by combining ceramic powder before sintering with fibers such as boron and silicon carbide. The obtained hybrid materials are known as ceramic composites.
Ceramic-metal composites:
Similar to ceramic composites but in this composite fiber and matrix are made of ceramic and metal. Example: Aluminum-strengthened boron fiber.
Ceramic-polymer composites:
Similar to ceramic composites but in this composite fiber and matrix are made of ceramic and polymers. Example: carbon-epoxy.
(d)
Interpretation:
The given material boron carbide/titanium has to be classified as ceramic-ceramic or ceramic-metal and or ceramic polymer.
Concept introduction:
Ceramic composites:
Materials which are inorganic, non-molecular solids, crystalline (quartz) and amorphous (glass) are known as ceramics. Ceramics are brittle in nature and susceptible to break. They are hardened by combining ceramic powder before sintering with fibers such as boron and silicon carbide. The obtained hybrid materials are known as ceramic composites.
Ceramic-metal composites:
Similar to ceramic composites but in this composite fiber and matrix are made of ceramic and metal. Example: Aluminum-strengthened boron fiber.
Ceramic-polymer composites:
Similar to ceramic composites but in this composite fiber and matrix are made of ceramic and polymers. Example: carbon-epoxy.
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Chapter 21 Solutions
General Chemistry: Atoms First
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