What is Aluminium magnesium boride? Fine and strip-shaped particles also exist on the sample's surface sintered at 800 °C, along with growing Mg0.5Al0.5B2particles. However, fewer strip-shaped particles on the sample's surface were sintered at 900 °C, with more irregular fine particles. The irregular fine particles are amorphous boron particles, indicating an incomplete reaction. There were substantially fewer fine particles on the sample's surface sintered at 1000 °C, whereas the size of Mg0.5Al0.5B2 particles increased substantially. Hwang also reported that the grain size and density increased as the sintering temperature increased. Therefore, the sintering temperature has a crucial effect on the solid-phase synthesis of Mg0.5Al0.5B2. The reaction was complete at 1000 °C and incomplete at lower temperatures. However, using an excessively high temperature requires considerable energy. In addition, an increase in temperature is accompanied by the growth of Mg0.5Al0.5B2 particles, which are expected to be finer when used with fuels. Thus, according to this comprehensive analysis, 1000 °C was identified as the optimum sintering temperature for synthesizing Mg0.5Al0.5B2. The main phases in the products were Mg0.5Al0.5B2 and a certain amount of Al. In the XRD patterns, the weaker the intensity of the Al diffraction peak, the lower the Al phase content and the greater the progress of the reaction toward completion. However, the XRD patterns obtained at different holding times are almost the same, indicating that the holding time has a minimal effect on the progress of the solid-phase reaction at this sintering temperature.
Most of the research on boron alloys is on Aluminium magnesium boride There is less research on ternary alloys. We decided to alloy boron with common metal fuels, namely, magnesium and aluminum. There was a comprehensive utilization of the low ignition point of magnesium, high burning rate, relatively high heating value of aluminum, and high heating value of boron. Instead of melting, we used high-temperature sintering to synthesize the ternary boron alloy (Mg0.5Al0.5B2) because of the simplicity and cost-effectiveness of the process and equipment. It is expected that this alloy will have superior propellant properties to boron. In this study, we mainly analyzed the influence of the sintering temperature and holding time on the formation of the alloy to identify optimum processing conditions. Atomized magnesium powder (particle size: 20 ± 3 µM, purity: 99.81%, Tangshan Weihao Magnesium Powder Co., Ltd., Tangshan, China), amorphous boron powder (particle size: 1–2 µM, purity: ≥99.9%, China New Metal Materials Tec Co., Ltd., Beijing, China) and microspherical aluminum powder (particle size: 1–2 µM, purity: ≥99.75%, Hunan Ningxiang Jiweixin Metal Powder Co., Ltd., Ningxiang, China) were used. An SGL-1700-II-type tube furnace (Shanghai Jvjing Precision Instrument Manufacturing Co., Ltd., Shanghai, China), a Dmax-RB-type X-ray diffractometer (Rigaku Co., Tokyo, Japan), an S250MK2-type scanning electron microscope (Grant Instruments Ltd., Cambridgeshire Shepreth, England) and an Escalab 250Xi photoelectron spectrometer (Thermo Fisher Scientific, Waltham, MA, USA) were used. A small amount of oxidation (gray and white) appeared on the surface of some samples after sintering. It may be that a tiny amount of air was not exhausted in the tube furnace during the experiment. When sampling, we removed the gray and white parts.
Preparation Process of Aluminium magnesium boride As shown in the following flowchart, the magnesium (3.2 g), aluminum (3.55 g), and boron powders (5.7 g) were weighed at a molar ratio of 1:1:4 and thoroughly mixed. The mixed powder was then passed through a mesh screen with an aperture size of 0.045 mm three times (in an inert atmosphere). Next, the powder was transferred into a crucible with dimensions of 95 × 35 × 3 mm3 (length × width × height). The crucible was placed in a tube furnace, in which an argon atmosphere was established by evacuating the furnace to a vacuum pressure of 0.01 Pa, then venting argon into the chamber until atmospheric pressure was re-established. The chamber was thus flushed with argon three times, and the argon flow rate was set to 100 mL/min. The powder sample was then sintered in a circulating argon atmosphere. To investigate the effect of heating temperature, powder samples were heated at a rate of 10 °C min−1 to 600 °C; maintained for 30 min; heated to 700, 800, 900, or 1000 °C at a rate of 10 °C min−1; maintained for two h; cooled to 500 °C at a rate of 10 °C min−1; and finally cooled to room temperature (0–15 °C) in the furnace. To investigate the effect of heating time, powder samples were heated to 600 °C at a rate of 10 °C min−1; maintained for 30 min; heated to 800 °C or 1000 °C at a rate of 10 °C min−1; maintained for 0.5, 1, 1.5, 2, 4, 6, 8 or 10 h; cooled to 500 °C at a rate of 10 °C min−1; and finally cooled to room temperature in the furnace. Once cooled, the samples were removed, ground, and sifted through a mesh screen with a 0.045 mm aperture three times to obtain the final samples. The phase composition of the samples was analyzed using X-ray diffractometry (Cu Kα; λ = 0.15406 nm; 2θ range: 10–90°; scanning step: 10 deg/min). Scanning electron microscopy (SEM) was used in secondary electron imaging (SEI) mode to observe the particle surface morphology. The specimens were not coated before SEM analysis. The specimens were placed on C cloth. The existing forms of elements in the samples were analyzed by X-ray photoelectron spectroscopy.
Price of Aluminium magnesium boride Aluminium magnesium boride particle size and purity will affect the product's Price, and the purchase volume can also affect the cost of Aluminium magnesium boride. A large amount of large amount will be lower. The Price of Aluminium magnesium boride is on our company's official website. Aluminium magnesium boride supplier Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including Aluminium magnesium boride, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective Aluminium magnesium boride, you are welcome to contact us or inquire at any time.
