Ion intensity thermal analysis by means of Knudsen cell mass spectrometry and its application to alloy systems
| Project/Area Number |
61470057
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
金属精錬・金属化学
|
|---|
| Research Institution | Kyoto University |
|---|
Principal Investigator |
ICHISE Eiji Professor, Faculty of Engineering, Kyoto University, 工学部, 教授 (10025918)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
UEDA Yukitomi Assistant, Faculty of Engineering, Kyoto University, 工学部, 助手 (80111920)
MORO-OKA Akira Lecturer, Faculty of Engineering, Kyoto University, 工学部, 講師 (20026008)
IWASE Masanori Associate Professor, Faculty of Engineering, Kyoto University, 工学部, 助教授 (00026329)
|
|---|
| Project Period (FY) |
1986 – 1988
|
| Project Status |
Completed (Fiscal Year 1988)
|
| Budget Amount *help |
¥6,500,000 (Direct Cost: ¥6,500,000)
Fiscal Year 1988: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1987: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1986: ¥4,500,000 (Direct Cost: ¥4,500,000)
|
|---|
| Keywords | Knudsen cell mass spectrometry / Activity measurement / Ion intensity thermal analysis / Thermodynamics / Ag-Mn / Ni-Cr-Co / Fe-Ta / 鉄ーニオブ / クヌーゼンセル質量分析計 |
|---|
| Research Abstract |
A combination of a quadrupole mass spectrometer and a Knudsen cell was used to study thermodynamic properties such as the activity and phase siagram of a series of alloys. In the present study, heating the knudsen cell in a high vacuum atmosphere to about 1900K was accomplished by resistance radiation from double spiral tungsten filament. The results obtained are as follows.
1. Ion intensity thermal analysis of Ag-Mn alloys: Heating and cooling curves of ion intensity of a a component of the alloy were used to detect transformations in the alloy. Temperature and type of invariant reactions in the alloys were determined.
2. Thermodynamic study of liquid Ni-Cr-Co alloys: Activities of liquid Ni-Cr-Co alloys were determined by the use of ion intensity ratio-Gibbs Duhem method. It was proved that regular solution assumption was applicable to this ternary solution. 3. Thermodynamic study of Fe-Ta and Fe-Nb alloys: Supplemental study was carried out to the thermodynamic investigation of these alloys.
4. Activities were determined in carbon saturated liqued iron-Co and Zn alloys. Activity coefficients and interaction parameters were derived. The details are still under investigation.
|
Report
(4 results)
Research Products
(6 results)
