| Project/Area Number |
17592053
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
補綴理工系歯学
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| Research Institution | Asahi University |
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Principal Investigator |
ADACHI Masanori Asahi University, SHCOOL OF DENTISTRY, ASSOCIATE PROFESSOR (60076057)
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| Co-Investigator(Kenkyū-buntansha) |
DOI YUTAKA ASAHI UNIVERSITY, SCHOOL OF DENTISTRY, PROFESSOR (40116067)
WAKAMASTU Nobukazu ASAHI UNIVERSITY, SCHOOL OF DENTISTRY, ASSITANT (00158594)
KAMEMIZU Hideo ASAHI UNIVERSITY, SCHOOL OF DENTISTRY, LECTURER (00152877)
IIJIMA MAYUMI ASAHI UNIVERISTY, SCHOOL OF DENTISTRY, ASSISTANT (80164838)
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| Project Period (FY) |
2005 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥3,750,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥150,000)
Fiscal Year 2007: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2006: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2005: ¥2,300,000 (Direct Cost: ¥2,300,000)
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| Keywords | APATITE / SUPER PLASTIC DEFORMATION / LIQUID PHASE / X-RAY DIFRACTION / BIOCOMPATIBILITY / SINTERING / STRAIN SPEED / 曲げ変形 / 伸び変形 / 赤外分光分析 |
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| Research Abstract |
To produce the desired shape of carbonate apatite (CAP) ceramics using superplastic deformation, deformation behavior of CAP ceramics under constant loading as well as physical properties after deformation were evaluated. Sintered CAP ceramics were plastically deformed in an electric furnace attached to a universal hydraulic testing machine under a constant load. CAP ceramics subjected to an initial compressive pressure of 10 Mpa showed appreciable amounts of plastic deformation at temperatures ranging from 720 to 800℃. Plastic deformation increased with increasing temperature from about 10% to 70% after 2 hrs loading. A marked plastic deformation of about 70% at 800℃ would be sufficient for near-net-shape production of bioresorbable CAP bone substitutes with complex shapes. X-ray diffraction analysis and SEM observations revealed that some CAP crystals were elongated and aligned with the c-axis normal to the loading direction during the superplastic deformation.
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