Abstract
Particle addition is an important method to prepare foam metal, and it is of great significance to clarify the mechanism of particle stabilizing liquid metal foam. In this paper, ethanol-water solution system is used to simulate liquid melt foam. By changing the wettability of particles to adjust the distribution position of particles in foam, two types of particles with different wettability are added, which are mixed and optimized in a certain proportion to improve the foam stability as much as possible. The main mechanism is that the large wetting angle particles at the gas-liquid interface to slow down the gas migration, while small wetting angle particles exist in the liquid film, which can reduce the liquid drainage velocity. The experimental results show that the effect of particle wettability on foam structure is greater than that on viscosity enhancement. The particles with large wetting angle are beneficial to the formation and stability of foam, and the particles with small wetting angle cannot stabilize the foam alone. The effect of two types of particle combinations with different wettability on foam stability is better than that of single type of particle. Considering the height and uniformity of the foam structure, the optimal particle combination is finally obtained.
Highlights
As one of the most potential new functional materials, closed-cell metal foam has a wide application prospect in various fields such as military industry, fire protection and aerospace because of its characteristics of light mass, large specific strength, and large specific stiffness (Banhart, 2013; Liu et al, 2013; Xu and Hao, 2014)
In foam metal preparation process, particles or other elements are usually added to improve the stability of foam structure
Ca is added to the melt and stirred in the ambient atmosphere to form the oxide inside metal melts to achieve foam stability, which is called thickening (Miyoshi et al, 2000; Song et al, 2000; Heim et al, 2017; Cheng et al, 2018)
Summary
As one of the most potential new functional materials, closed-cell metal foam has a wide application prospect in various fields such as military industry, fire protection and aerospace because of its characteristics of light mass, large specific strength, and large specific stiffness (Banhart, 2013; Liu et al, 2013; Xu and Hao, 2014). Ca is added to the melt and stirred in the ambient atmosphere to form the oxide inside metal melts to achieve foam stability, which is called thickening (Miyoshi et al, 2000; Song et al, 2000; Heim et al, 2017; Cheng et al, 2018).
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
