1. MAX-Phase Materials High performance ceramic materials for use in space applications Ida Kero Department of Engineering materials Luleå University of Technology

2. Introduction MAX-phase Properties My project Structure

3. MAX-Phase Ternary Carbides / Nitrides Family formula: M n A X n-1 M= Early Transition Metal A= Elements from Group 12-16 X= Carbon or Nitrogen

5. MAX: Structure layers of metal carbide/-nitride: M 2 X, M 3 X 2, M 4 X 3 Monatomic layers of A-elements between Nano-Laminates:

6. Metals Ceramics MAX-Phase: MAX: Properties Machinable, electronic conductivity, ductile at high temperature, thermal shock resistant, rather low weight, chemical stability, heat resistant.

7. Metal Carbide /-Nitride Layered structure Properties Strong covalent M-X bondings: Good thermal, elastic, chemical & electrical properties. Relatively weak M-A bondings: Anisotropic mechanical properties, especially deforming mechanisms.

8. My Project Pure Bulk Ti 3 SiC 2 Mechanical Properties Reaction Path Compare MAX-phases

9. My Project Sintering Process: Vary: *Temperatures *Holding Times *Temperature Profile

10. My Project Milling Process: Ord. Ball Mill Attritor Planetary Mill *Combine Mills *Vary Milling Time *Dispersants Main Risks: *Contamination *Agglomeration

11. Questions ?