Abstract Alkali‐free boroaluminosilicate glass (AFBG) is widely utilized in electronic display panels and fibers due to its superior mechanical properties thermal stability. The growing demand for high‐performance materials capable of withstanding extreme conditions has propelled the development AFBG. To this end, understanding relationship between composition, structure, at atomic level essential. This study investigates effects substituting B 2 O 3 alkaline earth metal oxides (RO) on...

Abstract The underground excavation work in coal mines is affected by many factors such as equipment, geological conditions, and human operations, resulting safety hazards. In the construction process of mining, it particularly important to choose scientific reasonable advanced fine detection methods. Taking complex structure Tunbao Coal Mine Xinjiang an example, view problems inability effectively advance accurately detect faults front head‐on adjust roadway slope during tunneling mine,...

Abstract The mechanical response of multicomponent borosilicate glasses has drawn significant attention in the design damage‐resistant glasses. In this work, we investigate plasticity two glasses, Borofloat ® 33 (Boro33) and N‐BK7 , by implementing a uniaxial tension test using molecular dynamics simulations. A bond‐switching mechanism is found to be responsible for plastic both governed increasing rate non‐bridging oxygen (NBO) production during tension. We that amount B 4 OSi linkages...

Abstract During industrial glass production processes, the actual distribution of stress components in during scribing remains, to date, poorly quantified, and thus continues be challenging model numerically. In this work, we experimentally quantified effect pressure temperature on viscosity SCHOTT N‐ BK 7 ® glass, by performing situ deformation experiments at temperatures between 550 595°C confining pressures 100 300 MPa. Experiments were performed constant displacement rates produce almost...

Abstract Borosilicate glasses have been in widespread use for over a century; however, detailed understanding of the structural response to densification is still lacking. In this work, two commercial borosilicate glasses, viz., SCHOTT N‐BK7 ® (N‐BK7) and Borofloat33 (Boro33), are hot compressed up 2 GPa with nitrogen gas, explored via 11 B solid‐state nuclear magnetic resonance (NMR) spectroscopy classical molecular dynamics (MD) simulations. The molar volume ( V m ) Boro33 decreases ~5%...

Basalt flakes (BFs) have been widely used in recent years as a novel anticorrosion material the marine industry to prevent corrosion of metal substrates. In this study, BFs were modified with 1–7‰ nano-SiO2 microspheres, and BF epoxy coating was successfully prepared. Experimental results showed that resin 3‰ microspheres exhibited excellent chemical durability (surface weight loss rate 2.2% alkali solution only 1.1% acid at room temperature after 480 h), low water infiltration (water...

Basalt continuous fibers (BFs) have been widely applied in the construction industry including marine applications, however, corrosion mechanism of BFs a seawater environment is still not well understood. In this work, we explored effect on weight loss, tensile strength, surface morphology, and microstructure structure via soaking solutions at different temperatures durations. Results show that loss ratio decreases first stage (around 18 h) 80 °C, 85 90 °C then increases for longer...

Abstract Shear flow and/or densification have been long considered as the main mechanisms accounting for inelastic deformation during indentation of silicate glasses. However, role glass is still debated. In this work, cube‐corner indenter was chosen to perform nano‐indentation tests on four different types glasses with a penetration depth up 0.5 μm. A 3D surface analysis method developed quantify amplitude impression field. Based newly approach, we found that shear and induced are visible...

Abstract A simplified and effective pressure cell together with an experimental procedure has been developed applied to compress samples of SCHOTT N‐ BK 7 ® glass under static high pressures in a piston‐cylinder apparatus. Results from the density volume recovery measurements show that, were effectively densified apparatus at room temperature increasing linearly frozen‐in pressure. To explain data, we mathematical model based on suggestion by Gupta (1988) two internal parameters, named...

Abstract Viscosity and coefficient of thermal expansion (CTE) are both crucial properties in the design new glasses for various applications. In this work, we extend application dilatometry to measure two important parameters governing viscosity glass‐forming systems, viz., glass transition temperature fragility index. We also describe a method determine dilatometric fictive ( T f,DIL ) present data five unique compositions covering range fragilities spanning 38‐96, which subjected cooling...

Abstract Indentation has been widely used for investigating the mechanical behavior of glasses. However, how various microscopic properties (such as atomic structure and mechanics) glass evolve from immediate contact with indenter to far‐field regions, these observables are correlated each other remain largely unknown. Here, using large‐scale molecular dynamics simulations, we investigate response a prototypical sodium silicate under shape load up an indentation depth 25 nm. Both short‐...

The synthesis process has a significant influence on the properties of Ca1-xTiO3:Eu3+x phosphors; thus, an optimized will lead to better performance phosphors. In this work, feasibility synthesizing phosphor with good luminescent by combining chemical co-precipitation method and microwave-assisted sintering was studied. precursor phosphors were prepared method. To find process, we applied both traditional (furnace) synthesize We found out that power 528 W for 50 min (temperature around 950...

Basalt glass belongs to the iron-rich aluminosilicate system; thus, iron content and redox index (IRI=Fe2+/Fetotal) influence viscosity, density, mechanical chemical properties of basalt fiber (BF). In this work, continuous BFs with IRIs ranging from 0.21–0.87 were prepared by adding a different amount agents. An economical easily accessible testing method—the spectral photometric method 1,10-phenanthroline—is applied measure IRI convinced accuracy, which has been approved Mössbauer spectra...

As a new type of anticorrosive material, basalt flakes (BFs) have been widely used in the marine industry due to their good acid and alkali corrosion resistance dispersion stability. In this work, effect carbon nanotubes (CNTs) addition on properties improvement flake epoxy resin (CNT-BF/EP) coating was studied. Firstly, 0–0.7 wt.% acidified CNTs modify surface BFs CNT-BF/EP successfully prepared. Experimental results showed that performance interfacial compatibility, tensile strength, were...

Abstract The shear behaviors of two multicomponent borosilicate glasses, Borofloat®33 (Boro33) and N‐BK7® (N‐BK7), under different pressures are investigated using molecular dynamics simulations. addition alkali ions lowers the yield stress changes pressure dependence modulus. Shear‐induced densification is observed in both glasses. It found that decreases oxygen‐centered bond angle coordination number change B responsible for density at low pressures, increase 5‐coordinated Si dominant...