Apparatus and method for measuring middle and low-temperature smelt surface tension, density and wettability

A technology of surface tension and low-temperature melt, which is used in density and wettability devices to measure the surface tension of medium and low-temperature melts. It can solve the problems of difficult adjustment of the substrate level, low measurement accuracy, and easy oxidation of the melt to achieve sealing Good performance, low equipment cost and easy operation

Inactive Publication Date: 2008-11-19
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
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Problems solved by technology

[0008] The purpose of the present invention is to provide a device for measuring the surface tension, density and wettability of medium and low temperature melts, which overcomes the disadvantages of low measurement accuracy, difficult adjustment of the substrate level, poor sealing effect, and easy oxidation of the melt.

Method used

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  • Apparatus and method for measuring middle and low-temperature smelt surface tension, density and wettability

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0021] Example 1: Measuring the surface tension of AlSi alloy.

[0022] The cylindrical sample 2 has a diameter of 8 mm and a height of 8 mm. It is placed on the surface of the high-purity graphite sheet substrate 3 and placed on the end of the sample sending quartz boat 6 together, and is sent into the quartz tube body 4 . Put Ti powder on the sample sending quartz boat 6 as oxygen scavenger. Adjust the sample sending quartz boat 6 so that the sample substrate remains horizontal, and finally seal it with a quartz glass cover 5 . Then use an external vertical leveler combined with the substrate image on the computer to judge whether the substrate 3 is tilted, rotate the quartz glass tube body 4, and observe the substrate image on the computer at the same time, so that the substrate is in a completely horizontal position.

[0023] High-purity argon / hydrogen mixed gas is used as the protective atmosphere during the measurement. First close the two-way air inlet 10, adjust the ...

Embodiment 2

[0025] Example 2: Measuring the wettability of lead-free binary Sn-based alloys with metal Cu.

[0026]A cylindrical sample 2 with a diameter of 6 mm and a height of 8 mm is placed on the surface of an oxygen-free Cu substrate 3 and placed together at the end of a sample sending quartz boat 6 , and sent into the quartz tube 4 . Put Ti powder on the sample sending quartz boat 6 as oxygen scavenger. Adjust the sample sending quartz boat 6 so that the sample substrate remains horizontal, and finally seal it with a quartz glass cover 5 . Then use an external vertical leveler combined with the substrate image on the computer to judge whether the substrate 3 is tilted, rotate the quartz glass tube body 4, and observe the substrate image on the computer at the same time, so that the substrate is in a completely horizontal position.

[0027] The flow protection atmosphere of high-purity argon / hydrogen mixed gas can be used for measurement, and vacuum atmosphere can also be used. Fir...

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Abstract

Disclosed is an apparatus for measuring surface tension, density and wettability of a medium-low temperature fused mass, which relates to the technique field of fused mass property measurement. The apparatus comprises: a heating device (1), a transparent quartz furnace tube, a light source (8), a digital camera (11) and a computer (12); and the transparent quartz furnace tube is horizontally positioned in the heating device (1), and both ends of the transparent quartz furnace tube stretch out of the heating device by 10 to 15cm. The light source (8), the digital camera (11) and the transparent quartz furnace tube are positioned at the same horizontal line; and software installed on the computer (12) can realize the on-line connection with the digital camera (11), dynamic changes of melt drip contour can be displayed dynamically on a computer display directly, and photo taking and animation shooting can be controlled by the computer. The apparatus has the advantages of adjusting the level of base plate conveniently and accurately, improving the measuring precision and repeatability; good sealing, available selection of a plurality of atmospheres such as vacuum, air and high purity argon gas; realizable on-line measurement of thermal property such as surface tension; and low cost of manufacture and simple operation.

Description

technical field [0001] The invention relates to the technical field of melt physical property measurement, and in particular provides a device for measuring the surface tension, density and wettability of medium and low temperature melts, which is used for the precise measurement of melt surface tension, contact angle and density, and is especially suitable for Measurement of medium and low temperature melts from room temperature to 800°C. [0002] The melt involved in the present invention includes molten metal and alloy, molten glass, molten ceramic material, molten salt, molten slag and the like. Background technique [0003] Surface tension is the basic physical and chemical parameter of liquid substances, and plays an important role in many disciplines such as surface chemistry, interface and colloid science, and material metallurgy. For example, in the process of metal smelting, the surface tension of high-temperature metal melts and the interface properties between t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/02G01N13/00G01N9/00
Inventor 李建强袁章福窦磊
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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