Determination device and determination method for metal solid/liquid phase interface energy
A measuring device and interfacial energy technology, which is applied to the measuring device of the metal solid/liquid phase interface energy, the determination of the metal solid/liquid phase interface energy, and the field of measuring devices, which can solve the problem that the oxygen content of the atmosphere cannot be accurately controlled online. and other problems to achieve the effect of avoiding oxidation and ensuring accuracy
Inactive Publication Date: 2017-06-23
PANGANG GROUP RESEARCH INSTITUTE CO LTD
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As far as the applicant knows: the Chinese patent announcement number is CN 1265201C, the publication date is 2005.03.09, the patent number is ZL03121050.3, and the title of the invention is "A device for online measurement of surface tension, contact angle and density of high-temperature melt"; The Chinese patent announcement number is CN 101308077B, the publication date is 2011.04.20, and the invention title is "A Device and Method for Measuring the Surface Tension, Density and Wettability of Medium- and Low-Temperature Melts", and they all design devices similar to the present invention, but Neither can accurately control the change of oxygen content in the atmosphere online
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Embodiment 1
[0041] Determination of the interfacial energy between pure iron and a single crystal alumina substrate
[0042] 1. Open the fastening bolts between the observation window and the cooling water jacket, place the 0.2g pure iron sample on the single crystal alumina substrate and place them on the upper surface of the T-stage, and use the glass level to rotate the T-stage to place the substrate Adjust to a horizontal state;
[0043] 2. Close the observation window, close the gas inlet valve, open the gas outlet valve, and vacuumize with an external vacuum pump to make the vacuum degree in the furnace reach 8×10 at room temperature. -2 Pa and stable;
[0044] 3. Adjust the position of the digital high-speed camera so that the lens and the center of the metal sample are on the same horizontal line, and adjust the focal length of the high-speed camera;
[0045] 4. Turn off the external vacuum pump, close the outlet valve, open the deoxygenation purification system, open the intake...
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Abstract
The invention discloses a determination device and determination method for metal solid / liquid phase interface energy, and belongs to the technical field of design and manufacturing of metallurgical test determination equipment. The invention provides the determination device and the determination method for metal solid / liquid phase interface energy and capable of controlling the oxygen content of the environment on line. The determination device comprises an environmental simulation system, a heating system and a metal melt change process recording system; the environmental simulation system at least comprises a set of low-oxygen environment formation simulator; a metal sample arranged in the environmental simulation system is heated in the environmental simulation system by the heating system to be melted, and is recorded by the metal melt change process recording system. According to the determination method, the oxygen content of the environmental simulation system is adjusted by the low-oxygen environment formation simulator, recording is conducted by the metal melt change process recording system, the wetting angle of the interface condition under different oxygen content conditions is measured, and the interface tension is calculated by the surface tension.
Description
technical field [0001] The invention relates to a measuring device, in particular to a measuring device for metal solid / liquid interface energy, and belongs to the technical field of metallurgical test measuring equipment design and manufacture. The present invention also relates to a method for measuring metal solid / liquid interface energy by using the measuring device Background technique [0002] In the production process of metal materials, there are often some non-metallic elements in the molten metal combined with alloying elements in the metal to form tiny particles. Some of these particles can promote metal solidification and refine metal solidification structure, and are called nucleating agents. According to the classical nucleation theory, the interfacial energy between the nucleating agent and the melt and the interfacial energy between the nucleating agent and the crystal nucleus are the key factors affecting the nucleation of anisotropic metals, which directly...
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IPC IPC(8): G01N13/00
CPCG01N13/00
Inventor 罗薛超李开华盛卓苗庆东朱福兴马尚润李亮
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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