| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
The coated tools that can stably cut Titanium alloy and Ni-based super allys used in the fields of aerospace and energy were developed. And the microscopic damage state of the coating film was confirmed and the adhesion interface between the workpiece and the coated film surface was researched metallurgically. The damage model and the countermeasures to reduce adhesion based on it were also proposed. The adhesion phenomenon when machined these materials is caused as a result of microcrystal of adhered material (work material). The diffusion reacted layer is not formed on the adhesion interface, but it is directly adhered by interatomic force and so on. After that, the machining properties of each material affect the damage of the coating film. This damage mechanism is a novel fact not found in conventional knowledge, and it is a useful finding for tool development.
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