| Project/Area Number |
07555206
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (A)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 展開研究 |
|---|
| Research Field |
Composite materials/Physical properties
|
|---|
| Research Institution | Nagoya University |
|---|
Principal Investigator |
CHOU Takao Nagoya University, Department of Materials Processing Engineering, Professor, 工学研究科, 教授 (50023114)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
MORIMOTO Hiroyuki Kobe Steel Ltd., Materials Design Research Laboratories, Head researcher, 技術開発本部, 主任研究員
KOBASHI Motoko Nagoya University, Department of Materials Processing Engineering, Research Asso, 工学研究科, 助手 (90225483)
KANETAKE Naoyuki Nagoya University, Department of Materials Science and Engineering, Professor, 工学研究科, 教授 (00115552)
|
|---|
| Project Period (FY) |
1995 – 1997
|
| Project Status |
Completed (Fiscal Year 1997)
|
| Budget Amount *help |
¥17,300,000 (Direct Cost: ¥17,300,000)
Fiscal Year 1997: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 1996: ¥8,200,000 (Direct Cost: ¥8,200,000)
Fiscal Year 1995: ¥6,300,000 (Direct Cost: ¥6,300,000)
|
|---|
| Keywords | Composite fabrication / Fiber reinforcing / Intermetallic compound / Spontaneous infiltration / Compression strength / Oxidation resistance / 複合材料 / In situ反応 / Insitu反応 |
|---|
| Research Abstract |
An Al_2O_3 fiber-reinforced-Al_3Ti matrix composite was synthesized by the reaction between Ti and molten aluminum after spontaneous infiltration of (Ti + Al_2O_3 short fiber) mixture with molten aluminum. By mixing AlB_<12> powder into Ti powder instead of Al_2O_3 short fiber, TiB_2 particulate-reinforced Al_3Ti matrix composite was fabricated by reaction between titanium and AlB_<12> after infiltration with molten aluminum. Pure TiAl compound was synthesized by infiltrating molten aluminum into the Ti powder at higher temperature of 1473K.TiB_2 particle-reinforced Al_3Ti composite shows highest compression strength. Al_2O_3 short fiber-reinforced Al_3Ti composite was lowest. Oxidation rate in the humid air was measured by measuring the change of weight at 723,923 and 1123K.In the initial stage, the rate of oxidation was high in all cases. On the way of heating to experimental temperature, a peak of the weight was found, caused by the hydrate formation of the oxide and the following dehydration of such hydrate. TiB_2 particle-reinforced composite showed the best oxidation resistance. On the other hand, this property of Al_2O_3 short fiber reinforced composite decreased with increasing volume fraction of fiber, because of no good bonding between fiber and matrix.
|
