2015 Fiscal Year Final Research Report
High quality joining of C/C composites and high temperature refractory metal with inter-metal layer
| Project/Area Number |
24560126
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Production engineering/Processing studies
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| Research Institution | Kinki University (2015)
Tokyo Institute of Technology (2012-2014) |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2016-03-31
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| Keywords | C/C複合材 / ろう付 / 活性金属 / 炭化物 / 熱膨張係数 / Ni基合金 |
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| Outline of Final Research Achievements |
For C/C composites/Ni-based refractory metal high quality joining, Ni-based alloy was made. 58Ni-20Cr-22Si alloy and 57Ni-20Cr-22Si alloy had good wettability on both C/C composites and Inconel-600 Ni-base alloy. These Ni-base alloy had the liquidus temperature lower than 1200ºC and can be used for high temperature brazing. The shear strength of C/C composites/Inconel-600 brazed joint with these metals was 2MPa. Crack was observed in C/C composites near joint interface. Enhancement of joint strength is considered to be due to the residual stress by CTE value difference between C/C composites and Inconel-600. By inserting Nb foil in the mating surfaces, the joint strength was improved. The interfacial bonding is, however, sound between both C/C composites and these alloys and Inconel-600 and these alloys, and with these alloys, high quality bonding is considered to be able to achieve.
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| Free Research Field |
接合工学
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