| Project/Area Number |
17540470
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Plasma science
|
|---|
| Research Institution | Yamaguchi University |
|---|
Principal Investigator |
OSAKI Katashi Yamaguchi University, Graduate school of science and engineering, Associate professor, 大学院理工学研究科, 助教授 (30035050)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
FUKUMASA Osamu Yamaguchi University, Graduate school of science and engineering, Professor, 大学院理工学研究科, 教授 (20026321)
|
|---|
| Project Period (FY) |
2005 – 2006
|
| Project Status |
Completed (Fiscal Year 2006)
|
| Budget Amount *help |
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2006: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2005: ¥2,700,000 (Direct Cost: ¥2,700,000)
|
|---|
| Keywords | Plasma jet generator / Plasma spray gun / Plasma processing / Spectroscopic measurement / Hybrid particle |
|---|
| Research Abstract |
In the present study, the aim is to product various hybrid particles by using a plasma spraying method. To this end, I have developed the high-performance-type plasma spray gun(HPPSG), and so, Al-coated-Ti spherical powders, which were raw material of Ti-Al metallic bond material, have been produced by using this spry gun. The results obtained in this study are as follows :
1. Development of HPPSG based on plasma electrode type plasma jet generator.
(1) A newly designed advanced plasma electrode type plasma jet generator (APEPJG) was stably operated under various operating conditions (maximum jet power; 14.1kW, thermal efficiency; 70-76%). Now, this generator constitutes from two Cu rode anodes and a Th-W rode cathode.
(2) HPPSG consists of the above-mentioned APEPJG and two feed pipes which are set on and perpendicular the nozzle axis. HPPSG was stably operated under various spraying conditions and jet power was effectively controlled by the arc current. Also, the process materials effectively heated and melted and then symmetrically ejected from the nozzle.
2. Production and appraisal of produced Al-coated-Ti spherical powders.
(1) Al-coated-Ti spherical powders were produced by using the developed spry gun. But, the production rate of powders was low (〜few %) and also, the spherical particle was few..
(2) The produced Al-coated-Ti particle was rich in Al.
(3) The quantity and quality of produced Al-coated-Ti particles were improved at 40 l/min in the working gas flow rate. But detailed effects of the gas flow rate on the quantity and quality of it are further investigation.
3. Quantities production of Al-coated-Ti spherical powders and synthesis of Ti-Al metallic bond material.
It is possible to product quantities of Al-coated-Ti spherical powders with improving the production rate and the particle collector. In the future, it will be carried out further study.
|
