Here we report a study of the feasibility of an nAl-ice propellant in small-scale rocket experiments. The focus here is not to develop an optimized propellant; however …
The thermal behavior of the energetic material 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaaza-tetracyclo-[5.5.0.05,9.03,11]-dodecane (HNIW or CL-20) and its mixtures with aluminum under linear temperature control condition and adiabatic condition were investigated by DSC-TG-MS-FT-IR and ARC. Two different particle sizes of aluminum …
This study verifies the feasibility of efficiently manufacturing a reliable, excellent, and low-cost multi-material component combining conventional and additive manufacturing …
aluminum powder is added with cement by weight is 0.2 to 0.4%. Due to the heating property of aluminum powder the bleeding capacity of concrete is increased at addition of aluminum powder 0.6 to 1% with weight of cement. Large adding of aluminum powder (10-15%), gives the high expansion in concrete and due to this cement
Aluminium matrix composites (AMC) do combine a high lightweight potential with a wide range of specific mechanical or thermal properties, depending on their material composition or the content of reinforcement …
An investor site visit to our Aluminium operations in the Saguenay and our Iron & Titanium business in Sorel, Quebec, Canada. News. Back to main menu. News. Get the latest news, stories and updates. Visit News. News. Releases; Trending topics; Stories; Podcast. Back to News. Podcast. Susie Dent's dictionary;
The shrinking core model (SCM), a widely used kinetic model for describing reaction kinetics and reaction mechanism in solid-gas or solid-liquid heterogeneous reactions [[24], [25], [26]], has been used to study the hydration reaction of Al and water [[27], [28], [29]].Levenspiel [30] gave the traditional SCM to describe the heterogeneous reactions of …
Near-infrared (IR) spectroscopy has been used to distinguish between alumina oxo and hydroxy phases. Two near-IR spectral regions are identified for this function: (1) the high-frequency region between 6400 and 7400 cm−1, attributed to the first overtone of the hydroxyl stretching mode, and (2) the 4000–4800 cm−1 region attributed to the combination of the stretching and …
In this study, aluminum powder is provided by the Institute of China Aerospace Science and Industry Corporation. There are three particle sizes, namely 1–2, 13, and 29 μm. The control equivalence ratio is 1. After multiple tests, we found that detonation is more difficult using 1–2 μm and 29 μm aluminum powders, and the detonation is ...
In order to prevent dust explosions due to electrostatic discharges (ESD), this paper reports the minimum ignition energy (MIE) of aluminum powders in the air and the effective nitrogen (N 2) concentration for the inert technique.The Hartman vertical-tube apparatus and five kinds of different sized pure aluminum powders (median particle size, D50; 8.53 μm–51.2 μm) …
Laser surface alloying of a marine propeller bronze (Cu–Mn–Al–Ni–Fe, designated as MAB in the present study) using aluminium powder has been attempted by means of high-power Nd:YAG laser. The cavitation erosion behavior of the laser treated samples in deionized water has been studied. The following conclusions are drawn.
Aluminum powders were purchased from the commercial manufacturers. Particle sizes were determined by a laser diffraction analyzer and characterized by d 50, which are listed separately by 35 nm, 75 nm, 100 nm and 75 μm. Chemical composition (such as activated aluminum, Fe, Cu, Si, H 2 O contents) and particle size distributions of aluminum powders …
The combustion mechanism of aluminum particles in a detonation environment characterized by high temperature (in unit 10 3 K), high pressure (in unit GPa), and high-speed motion (in units km/s) was studied, and a combustion model of the aluminum particles in detonation environment was established. Based on this model, a combustion control equation …
A comparative study on the influence of different binder systems was carried out on the processing of aluminum (Al) powder aqueous suspensions/slurries. The role of powder/binder contents, vehicles, contact angle and their effects on corresponding applied films were investigated. ... In this study, Al-based powder and six types of binder ...
1. Introduction. Micron-sized aluminum (µAl) powder as a fuel additive is widely used in solid propellants to enhance the combustion performance due to its high energy density and combustion heat value [1, 2].Its combustion process involves melting, accumulation, agglomeration, and ignition, respectively [3].. The molten surface layer's adhesion effect …
This study focused on the feasibility of aluminum vapor chambers with two types of wick structures. Aluminum is easy to shape, light weight, and has a proficient reclamation …
Studies on Powder Metallurgy Process to Produce Aluminum Metal by Using Taguchi Optimization Techniques November 2022 Guangdianzi Jiguang/Journal of Optoelectronics Laser 41(8):2022
Aluminum hydroxide is a secondary product during operation of a hydrogen generator. An alkaline reaction proceeding between aluminum or aluminum alloy and caustic soda may be considered as a chemical dispersion method with preparation of nanodispersed aluminum hydroxide powder. Particle fineness and morphology, and also aluminum …
In this test, aluminum powder and aluminum powder-petroleum ether mixtures were utilized as the test sample. The specifications of the aluminum powder are detailed in Table 1, and the content of active aluminum exceeded 99 %.Additionally, the SEM (Scanning Electron Micrograph) image depicting the aluminum powder is presented in Fig. 1.The Al …
supported by a study in (Avoundjian, 2017) where an aluminum/air battery p roduced an energy density of 8.1 kW/kg at 2.71 V making it superio r than other metal/air batteries. Bo th copper and ...
This study demonstrates the feasibility of directly extruding aluminum alloy powder into fully consolidated wire in a single step process. The extrudate is free of noticeable defects and...
-4 were vertically arranged above the oil pan from bottom to top at intervals of 100 mm. (a) ordinary ABC dry powder under 0.5 MPa, (b) ordinary ABC dry powder under 1.0 MPa, (c) superfine ABC dry powder under 0.5 MPa, (d) superfine ABC dry powder under 1.0 MPa, (e) 4 wt% ferrocene composite superfine dry powder under 0.5 MPa, (f) 4 wt ...
The U.S. aluminium powder market size was worth USD 303.3 million in 2022 and is projected to grow at a CAGR of 6% during the forecast period ... The report has conducted a detailed study of various prominent factors, such as leading applications, key companies, and top products. It also gives information on prominent market trends and focuses ...
PDF | After determining the parameters for laser powder-bed fusion, aluminum alloys 2017A, 2219, 7075, 7020, 6061, 5083, 1050A, AlMg14 and AlSi10Mg by... | Find, read and cite all the research you ...
It is important to investigate the dynamic compression of granular materials, owing to their extensive applications in powder metallurgy, material processing, and ammunition engineering. This study investigates the dynamic compression behavior of micron-sized Al powders under various loading conditions using a split-Hopkinson pressure bar. We record the …
In this study, open cell aluminum s with different pore sizes were produced using the powder metallurgy method and polyurethane (PUF) replica technique. After the PUF model material of the s was removed at 500 °C for 6 h, they were sintered at different temperatures such as 850, 900 and 950 °C for 6 h.
In this study, temperature uniformity and heating rate of heat spreader with multi-well are simulated and analyzed by CFD software under natural convection condition. Firstly, …
Request PDF | On Oct 1, 2024, Shixuan HUI and others published Numerical study on multiphase combustion characteristics of aluminum-based powder-fueled water ramjet engine | Find, read and cite ...
The goals of studies using VPP technology were, e.g., the producibility of microfeatures [5–7], investigation of the failure mechanisms relevant for the tooling [8,9] and comparison of the performance of VPP and MJT tooling [10,11]. Other works studying MJT tooling compared it to conventional metal tooling [12,13], powder bed fusion (PBF)
An efficient way to find the workability limit for powder metallurgy parts has been suggested. Compacts of Al-4%TiC, Al-4%WC, Al-4%Fe 3 C, and Al-4%Mo 2 C were produced to the relative density of ...
Sieving Aluminum Powder at 74 and 25 micron. Description: Company needed to sieve aluminum powder particles for additive manufacturing applications. Screening Machine Used: Hi-Sifter 1002. Powder Cut Points: 74um and 25um Final Specification Requirements: Maximum 1% fines below 15 microns remaining in -74um +24um fraction. Production Run …
Download: Download high-res image (2MB) Download: Download full-size image Fig. 1. Roadmap for the development of aluminum alloys processed by laser additive manufacturing in the past decades: (a) Schematic of the LPBF physical model and the temperature field; (b) The velocity field within the molten pool; (c) Mechanical properties of the …