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【正文】 ustion synthesis Advantages ?Energy Efficient ?Low cost ?Solid adhesion Drawbacks ?Inclusion ?Process control Applications ?Powder prep. ?Ceramics Sintering Target Materials ?Ni+Al=(RT) ?Cr2O3+2Al=Al2O3+(RT) ?3NiO+2Al=Al2O3+(RT) ?Zr+O2=(RT) ?2Y+O2=(RT) 14 / Confidential/ 5/30/2022 Micro Spark Deposition Advantages ?Metallurgical bonding ?Various coating materials Drawbacks ?Electrode making ?Micro crack Applications ?Wear resistance coating ?Cold welding To deposit consumable electrodes of alloys/intermetallic pounds on the work piece by means of micro electric sparks at frequencies of 101000 per second for 106105 seconds per spark. Direct current heated the electrode up to 8,00025,000oC only at contact areas, transfers a small quantity of the electrode to the work piece to form a strong metallurgical bonding. 15 / Confidential/ 5/30/2022 Tech Roadmap 16 / Confidential/ 5/30/2022 Appendix 17 / Confidential/ 5/30/2022 Operating Condition of Turbine Blades Journey through a jet engine Fan LPC HPC HPT LPT 18 / Confidential/ 5/30/2022 Data for Turbine Blades ?High Temperature: ~1400oC ?High Pressure: ~40atm ?High Rotating Speed: ~11,000rpm ?Centrifugal force, airflow impact and vibration ?Oxidation and erosion ?Thermal Mechanical Cycling HPT blade lifetime: ?Currently: 16,000 hours (2~3years) ?Expected: 30,000+ hours Rough estimate of cost: ?A set of blades for HPT:
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