MAX-Phase Materials

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MAX-Phase Materials
High performance ceramic materials for use in
space applications
Ida Kero Department of Engineering
materials Luleå University of Technology
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Introduction
MAX-phase
Structure
Properties
My project
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MAX-Phase
Ternary Carbides / Nitrides
Family formula Mn A Xn-1
M Early Transition Metal
A Elements from Group 12-16
X Carbon or Nitrogen
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MAX Structure
Nano-Laminates
Monatomic layers of A-elements between
layers of metal carbide/-nitride M2X, M3X2, M4X3
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MAX Properties
Ceramics
Metals
MAX-Phase
Machinable, electronic conductivity, ductile at
high temperature, thermal shock resistant, rather
low weight, chemical stability, heat resistant.
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Properties
Metal Carbide /-Nitride
Strong covalent M-X bondings
Good thermal, elastic, chemical electrical
properties.
Layered structure
Relatively weak M-A bondings
Anisotropic mechanical properties, especially
deforming mechanisms.
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My Project
Pure Bulk Ti3SiC2
Mechanical Properties
Reaction Path
Compare MAX-phases
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My Project
Sintering Process
Vary Temperatures Holding Times Temperature
Profile
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My Project
Ord. Ball Mill Attritor Planetary Mill
Milling Process
Main Risks Contamination Agglomeration
Combine Mills Vary Milling Time Dispersants
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Questions ?