Functional Compound Combustion Synthesis under Centrifugal Force and - PowerPoint PPT Presentation

Finnish-Japanese Workshop on Functional Materials May 25-26, 2009 / Espoo and Helisinki, Finland Functional Compound Combustion Synthesis under Centrifugal Force and Microgravity Osamu Odawara Dept. Innovative & Engineered Materials, Tokyo Institute of Technology E-mail: odawara.o.aa@m.titech.ac.jp Combustion Synthesis < Microgravity > < Centrifugal Force > fine composite formation composite-layer formation Products wetness Reaction propagation Thermal convection Thermal expansion Highly Potential Materials Synthesis

Centrifugal-Thermite Process For casing pipes on geothermal energy utilization Al 2 O 3 + 3Me + Q 3MeO + 2Al For pipes against erosion-corrosion Centrifugal force applied for forming composite layered pipes ( Centrifugal-casting technology) + Thermite reaction achieving for self-sustaining high-temperature reaction 30 mm φ x 100 mm 〜 500 mm φ x 6,000 mm

SEI BEI metal ceramic Outer metal layer Product layers Fe Al Fe 2 O 3 + 2Al Al 2 O 3 + 2Fe + Q

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Functionally Graded Materials Project

Micro-gravitational Combustion Synthesis μ g 1g 5 μ m 5 μ m Optoelectronic compounds: GaP, InP and CuInS 2 3Cu 2 O + 3In 2 O 3 + 12S + 8P = 6CuInS 2 + 2P 4 O 6 2xGa 2 O 3 + 2(1-x) In 2 O 3 + 8P = 4Ga x In (1-x) P + P 4 O 6 lightening Light-induced ferromagnetism magnetic semiconductor magnetic semiconductor iron Dilute magnetic compounds: Mn-InP and Mn-(Ga, In)P

Space-DRUMS S pace- D ynamically R esponding U ltrasonic M atrix S ystem Dynamic Acoustic Dynamic Acoustic Acoustic Projector Wave Packet Sample • Short, Shaped, Ultrasonic Acoustic Pulses Projected at Sample • Acoustic Beam Focused by Shaped Transducer • Reflecting Wave Packet Transfers Momentum to Sample • Pulses Digitally Controlled by Video Cameras in Feedback Loop 20 Acoustic Projectors at Vertices of Retractable Dodecahedron Sample Insertion Rod and Igniter Sample Viewed by 3 Orthogonal IR Video Cameras in Feedback Loop with Sample, Electrically Ignited Acoustic Projectors

[Activity Plan of Space Combustion Synthesis Working Group] [Activity Plan of Space Combustion Synthesis Working Group] Innovative Research WG, Tokyo Tech. Japan Research Association on Combustion Synthesis Space Combustion Synthesis WG System Factor : advanced with external forces [ignition-propagation-formation] < Branding of Space Combustion Synthesis > External Factor: efficient to reaction propagation [gravity-pressure-composition] Energy saving (self sustaining high temperature zone) Reaction heat control Inert Combustion Synthesis Experiments (exothermic chemical oven) {Key Tech.: Heat and Mass Transport after ignition} Easy performance (ignition and wave front formation) Rapid temperature increase ( tens mm/s in velocity) Technology Transfer to JEM/ISS Programs <Advanced Combustion Synthesis> {Int’l. Corp. Scenario: Application of SpaceDRUMS} R&D on In-situ Resource Utilization and In-space Fabrication&Repair