| Budget Amount *help |
¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2015: ¥12,090,000 (Direct Cost: ¥9,300,000、Indirect Cost: ¥2,790,000)
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| Outline of Final Research Achievements |
In this study, we devoted the developing a novel "biodegradable implant material" which is composed of two types of intermetallic compounds having different biodegradability in a Ca-Mg-Zn ternary system. As a result of investigating in various alloy compositions, we discovered a Ca2Mg5Zn13 (IM 3) - Ca3 MgxZn(15 - x) (IM 1) dual-phase alloy, as an alloy having an island microstructure. By the various examinations in this alloy system, it was clarified that the control of the degradation behavior of the multiphase alloys can be achieved by the simultaneous control of the "characteristics of each component phase" and the "morphology of the microstructure". Furthermore, the basic experiments using a single crystal unveiled that the control of crystal orientation of constituent phases also must be an effective way for controlling the dissolution behavior of the multiphase alloys in addition to the above factors.
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