熔融PbO-B2O3-Bi2O3-CuO玻璃对430ss的润湿

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-06-01 DOI:10.1016/j.jallcom.2025.181333

Ran Sui , Qiaoli Lin , Zixu Zuo

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引用次数: 0

摘要

以某冶炼厂含铅量约为30 wt.%的粉尘废料为原料，通过配方优化，制备了低熔点玻璃焊料，以达到回收利用和减少环境污染的目的。玻璃焊料主要由PbO-Bi2O3-B2O3-CuO组成，其玻璃化转变温度为286.3℃（Tg），结晶温度为428.4℃（Tc），完全熔合温度为490.3℃（Tm），热膨胀系数为1.10×10-5 /℃（从室温到Tg），表面张力σlv = 217.58 - 0.78(T - Tm) mN/m（从Tm到530℃）。在实验中，采用传统的固滴法和改进的固滴法研究了430ss在玻璃熔体中的润湿性和扩散动力学。结果表明，该材料具有良好的润湿性，接触角可低至4.7°，扩散过程主要由界面反应和熔体粘度决定。此外，玻璃焊料的热膨胀系数接近430ss，适合密封应用。本工作为适合430ss密封的玻璃焊料提供了基本的物性数据，为新型玻璃焊料的开发提供了经验。

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Wetting of 430ss by molten PbO-B2O3-Bi2O3-CuO glass

In this work, a low melting point glass solder was prepared by using the dust waste with lead content of about 30 wt% from a metallurgical plant through formula optimization, aiming at recycling the waste and reducing environmental pollution. The glass solder is mainly composed of PbO-₂°₃-B₂°₃-CuO, which has a glass transition temperature of 286.3℃ (T_g), a crystallization temperature of 428.4℃ (T_c), a complete fusion temperature of 490.3℃ (T_m), a thermal expansion coefficient of 1.10×10–5 /℃ (from room temperature to T_g), and surface tension _lv = 217.58 – 0.78(T – T_m) mN/m (from T_m to 530 ℃). In the experiment, the wettability and spreading dynamics of 430ss by molten glass melt were studied by traditional and improved sessile drop method. The results show that the good wettability, and the contact angle can be as low as 4.7°, and the spreading process is mainly determined by the interface reaction and the viscosity of melt. In addition, the thermal expansion coefficient of glass solder is close to that of 430ss, which is suitable for sealing applications. This work provides basic physical property data for glass solders suitable for 430ss sealing, and provides experience for the development of new glass solders.

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.