Design Strategy for Additive Manufacturing Ti-Al-Fe Alloys with Calculation of Phase Diagram Method

An aberration-free four-electrode lens is described for forming an ion beam for mass separators or spectrometers. The lens is a modification of the transaxial lens, in which the circular gaps between the electrodes are replaced by elliptical gaps. A lens converts an axially symmetric beam into a tape-type beam. The lens parameters are found using the phase diagram method. Using the same method, a new aberration corrector for electrostatic lenses and a new sector magnet aberration corrector are developed.

Download Full-text

Preparation of MgSO4·H2O by the Phase Diagram Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.807-809.2788 ◽

2013 ◽

Vol 807-809 ◽

pp. 2788-2792

Author(s):

Hong Xia Li ◽

De Wen Zeng ◽

Yan Yao

Keyword(s):

Phase Diagram ◽

Binary System ◽

Ternary System ◽

Magnesium Sulfate ◽

Phase Diagrams ◽

Industrial Production ◽

Diagram Method ◽

Equilibrium Time ◽

Salt Pans ◽

C 50

Kieserite (MgSO4·H2O) which has great application in recent years, was prepared according to the binary system MgSO4H2O at 80°C and the ternary system MgCl2MgSO4H2O at 25°C, 50°C and 75°C phase diagrams in this research. We reveal that the pure MgSO4·H2O is acquired in the ternary system MgCl2MgSO4H2O at 75°C with MgCl2 (23.966%~37.93%) for the equilibrium time 5~7days. The higher hydrated magnesium sulfate can be obtained in the ternary system with MgCl2 (0~34.52%) at 25°C, (0~35.684%) at 50°C, and (0~23.966%) at 75°C for 5~7days. These results are beneficial for the industrial production by converting MgSO4·7H2O and MgCl2·6H2O which are not fully exploited in salt pans into the useful MgSO4·H2O.

Download Full-text

Precipitation Prediction and Experimental Clarification of Mg-Al-Sn System

Materials Science Forum ◽

10.4028/www.scientific.net/msf.620-622.295 ◽

2009 ◽

Vol 620-622 ◽

pp. 295-298

Author(s):

Jin Young Kim ◽

Eun Jung Kim ◽

Jeong Whan Han

Keyword(s):

Phase Diagram ◽

Thermodynamic Description ◽

Alloy System ◽

Detailed Comparison ◽

Precipitation Process ◽

Diagram Method ◽

Precipitation Prediction ◽

Mg17al12 Phase ◽

Commercial Package ◽

Lower Temperature

Phase equilibrium of the Mg-Al-Sn alloy system was calculated in detail by utilizing phase diagram calculation commercial package and other thermodynamic data for Mg alloys. The calculated phase diagrams were compared with the DSC results for the alloys of Mg-3wt%Al-3wt%Sn. The solidification and precipitation process of Mg-3wt%Al-Xwt%Sn were analyzed. The detailed comparison strongly supports the reliability of the selected thermodynamic description based on the results of thermodynamic calculation. It is clarified that when the Mg-Al-Sn alloy ends its solidification and cools down continuously, the phase Mg2Sn precipitated first from solid solution of magnesium, and then the Mg17Al12 phase precipitated at relative lower temperature. This is shown that the calculation phase diagram method considerably reduces the effort of alloy design and that the reliability of the results is high.

Download Full-text