Advanced Powder Technology最新文献

{"title":"Comparative analysis of microstructure and combustion performance of flake and spherical aluminum powder and its application in chip self-destruction","authors":"Hongyang Li ,&nbsp;Ran Wang ,&nbsp;Ningliang Kong ,&nbsp;Shentao Zeng ,&nbsp;Lixiaosong Du ,&nbsp;Hong Li ,&nbsp;Wenqi Xu ,&nbsp;Ruiling Xie ,&nbsp;Cui Luo ,&nbsp;Jianmin Wu ,&nbsp;Ying Liu","doi":"10.1016/j.apt.2025.104964","DOIUrl":"10.1016/j.apt.2025.104964","url":null,"abstract":"<div><div>The combustion performance of aluminum powder is closely related to its microstructural features, which significantly influence the engineering applicability of aluminum powder as metal fuel. In this study, six types of flake aluminum powders and six types of spherical aluminum powders were selected for a comparative investigation of their microstructural characteristics and combustion performance, employing techniques of Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), X-ray Diffraction (XRD), and oxygen bomb calorimetry. Additionally, research was conducted on the chip self-destruction technology based on aluminum powder. The results indicate that as the particle size of flake aluminum powder increases, the content of reactive aluminum also rises, leading to enhanced combustion heat value. Smaller-sized flake aluminum powders exhibited agglomeration phenomena. The condensed combustion products of flake aluminum powder are composed of dispersed gray-white particles, with multiple smaller fragments present. The smaller the particle size of the flake aluminum powder, the more dispersed its combustion products appear upon solidification; conversely, larger particles tend to coalesce. The primary composition of the combustion products of flake aluminum powders consists of 3Al₂O₃·2SiO₂ and Al₂O₃ crystals. For spherical aluminum powders, both the combustion heat value and efficiency increase with larger particle size, with notable differences observed between nano-sized and micron-sized aluminum powders regarding combustion heat value and efficiency. The combustion products of spherical aluminum powders consist of closely adhered black and white condensed phase combustion products, along with a few gray-white particles distributed on the walls and bottom of the crucible. The ignition process of both flake and spherical aluminum powder composite fuels comprises five stages: ignition, deflagration, stable combustion, flame decay, and extinguishing, with significant effects of the microstructural differences in aluminum powders on each stage. The ignition delay time for flake aluminum powders is shorter than that for spherical aluminum powders, accompanied by a higher intensity of combustion, indicating greater flammability, while spherical aluminum powders exhibit longer combustion durations. Both flake aluminum powder composite fuels and spherical aluminum powder composite fuels can cause irreversible physical damage to chips and their leads, achieving effective destruction.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104964"},"PeriodicalIF":4.2,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144271497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Full title (Editorial Board Members)","authors":"","doi":"10.1016/S0921-8831(25)00176-1","DOIUrl":"10.1016/S0921-8831(25)00176-1","url":null,"abstract":"","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 7","pages":"Article 104955"},"PeriodicalIF":4.2,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inside Front Cover (Aims & Scope, Editors)","authors":"","doi":"10.1016/S0921-8831(25)00175-X","DOIUrl":"10.1016/S0921-8831(25)00175-X","url":null,"abstract":"","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 7","pages":"Article 104954"},"PeriodicalIF":4.2,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optical characteristics and application of cobalt/nickel doped SrZn2(PO4)2 blue-violet and violet inorganic pigment powders","authors":"Qiuyu Cheng ,&nbsp;Zhiwei Wang ,&nbsp;Ayahisa Okawa ,&nbsp;Takuya Hasegawa ,&nbsp;Tohru Sekino ,&nbsp;Shu Yin","doi":"10.1016/j.apt.2025.104952","DOIUrl":"10.1016/j.apt.2025.104952","url":null,"abstract":"<div><div>Blue-violet and violet inorganic pigments, derived from SrZn_2-<em>_x</em>Co<em>_x</em>(PO₄)₂ (0 ≤ <em>x</em> ≤ 1) and SrZn_2-<em>_x</em>Ni<em>_x</em>(PO₄)₂ (0 ≤ <em>x</em> ≤ 0.5) solid solutions, were successfully synthesized via a solid-state reaction. The structure, color, optical properties, and potential applications of the synthesized pigments were systematically characterized. All pigments crystallized in a single-phase structure. Rietveld refinement analysis confirmed the successful substitution of Zn²⁺ by Co²⁺/Ni²⁺ in the lattice. Based on the XPS and UV–Vis–NIR analyses revealed that the coloration of Co²⁺/Ni²⁺ doped SrZn₂(PO₄)₂ originates from <em>d-d</em> electronic transitions in a tetrahedral coordination environment. Compared to commercial purple pigments, such as Co₃(PO₄)₂ and NH₄MnP₂O₇, the synthesized pigments exhibit superior thermal stability and require lower cobalt or nickel doping levels. Furthermore, 2 wt% of these pigments were incorporated into poly(methyl methacrylate) (PMMA) plastic to form blue-violet and violet composites, whose color and optical properties were systematically analyzed.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104952"},"PeriodicalIF":4.2,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Changes in full characteristics of spontaneous coal combustion under influence of temperature-driven CO2 desorption","authors":"Lin Li ,&nbsp;Tiantian Liu ,&nbsp;Xiangjun Chen ,&nbsp;Jun Liu ,&nbsp;Lin Wang ,&nbsp;Fuchao Tian ,&nbsp;Weiwei Su ,&nbsp;Haidong Chen ,&nbsp;Xuechen Li ,&nbsp;Guodong Li","doi":"10.1016/j.apt.2025.104962","DOIUrl":"10.1016/j.apt.2025.104962","url":null,"abstract":"<div><div>In coal mine goafs, spontaneous coal combustion disaster is a heating process caused by coal oxidation. Many experiments have investigated the variation of coal oxidation characteristics under different inert conditions; however, the time precondition of the inert conditions is usually ignored. In this study, a porous material adsorbed with CO₂ is mixed with coal for the oxidative heating experiment to investigate its full influence on the coal oxidation characteristics. The experimental results show that CO₂ proactively desorbs from the porous material at a small increase in temperature. In the mixture sample, the CO₂ concentration increases sharply to 57080 ppm around 80 ∼ 90 °C, and the crossing point temperature moves to the high-temperature region with a maximum delay of 26.3 %, significantly slowing down the oxidation process of the coal. In addition, the composite decision index of the mixture sample increases by a maximum of 10.91 %, and the spontaneous combustion tendency of the coal changes from “Spontaneous combustion” to “Non-prone to spontaneous combustion”, essentially decreasing the spontaneous coal combustion capacity. The temperature-driven CO₂ desorption from the porous material dilutes the oxygen concentration to hinder the coal-oxygen composite reaction from the very beginning of coal oxidation process, presenting an advanced and efficient preventive effect.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104962"},"PeriodicalIF":4.2,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Statisticals models of powder spreadability in powder-bed-based additive manufacturing","authors":"M. Soulier,&nbsp;A. Burr,&nbsp;J.P. Garandet","doi":"10.1016/j.apt.2025.104947","DOIUrl":"10.1016/j.apt.2025.104947","url":null,"abstract":"<div><div>Powder spreading is an essential and common step in Powder-Bed-Based Additive Manufacturing (PBBAM) processes. However, the effect of powder properties and spreading parameters on the powder layer quality is not well understood. This study gathers characterization data on 75 steel powders to study the correlations between particle size and shape, apparent density, free-flowability, and ultimately spreading behavior. To do so, a novel instrumented apparatus is developed to investigate both powder layer density and powder layer roughness in a representative environment. Then, a characteristic subset of 28 powders from the complete dataset (exhibiting both spherical and irregular shapes) was further tested with two different spreading tools. Based on the entire collected dataset, Multiple Polynomial Regression analyses were conducted on powder apparent density (PAD) and powder layer density (PLD) to achieve both explanatory and predictive modelling, yielding respective R² values of 82 % for PAD and 90% for PLD.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104947"},"PeriodicalIF":4.2,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An effective strategy for converter slag and blast furnace dust by a deep self-reduction technology: Synergetic reaction and phase evolution behavior","authors":"Shanshan Wen ,&nbsp;Chaoyong Sun ,&nbsp;Sibo Shen ,&nbsp;Lihua Gao ,&nbsp;Junhong Zhang ,&nbsp;Zhijun He","doi":"10.1016/j.apt.2025.104950","DOIUrl":"10.1016/j.apt.2025.104950","url":null,"abstract":"<div><div>Advanced self-reduction roasting technology is a simple route for realizing the clean and synergetic utilization of hazardous blast furnaces and converter slag. However, the correlation between the crushing strength and metallization ratio of flux-metalized pellets has not been elucidated. This work clarified the consolidation behavior and synergetic mechanism in the preparation process of flux-metalized pellets. Through comprehensive optimization of process parameters, fluxed metalized pellets with a crushing strength of 3924 N/P, a metallization ratio of 86.54 % and a zinc recovery ratio of 90.35 % were successfully produced under the following optimal conditions: a reduction temperature of 1200 °C, a reduction time of 60 min, a basicity of 1.25 and an FC/O of 0.9, which meets the requirements for raw materials in blast furnace production. The reduction behavior of zinc ferrite Zn_xFe_3-xO₄ and stirlingite ZnFeSiO₄ played a crucial role in the preparation of pellets. During the reduction process of Zn_xFe_3-xO₄, Zn_xFe_3-xO₄ was initially reduced to wustite Zn_yFe_1-yO and then further reduced to metallic iron and zinc. During the reduction process of ZnFeSiO₄, olivine-type Zn_xFe_2-xSiO₄ could combine with CaO to form stable olivine CaSiO₄ under the action of CaO flux, in which the participation of CaO could effectively decrease the reduction activation energy of FeZnSiO₄. In addition, Ca_yFe_2-ySiAl₂O₇ originated from the displacement reaction between Ca_xFe_1-xAl₂O₄, which has a spinel crystal structure, and Ca_xFe_2-xSiO₄, which has an olivine crystal structure. A deep self-reduction roasting technology was developed to provide technical support and theoretical guidance for the clean utilization of metallurgical solid waste resources.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104950"},"PeriodicalIF":4.2,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication and electrochemical evaluation of nano-silicon anode materials for energy storage application","authors":"Liao Juan,&nbsp;Tao Meixian,&nbsp;Wang Canxu,&nbsp;Zhang Tianxiang,&nbsp;Zhang Ruibo,&nbsp;Jiang Qi","doi":"10.1016/j.apt.2025.104963","DOIUrl":"10.1016/j.apt.2025.104963","url":null,"abstract":"<div><div>In order to solve the inherent low conductivity and the volume expansion problems of the silicon anode material, a modified precipitation method using polyvinyl alcohol as the surfactant was developed to prepare nano-scale silicon particle anode materials in this paper. First, the nano-silica particles were prepared by controlling the surfactant content. Then they were reduced to nano-silicon particles by the magnesium thermal reduction method. The obtained samples were characterized by XRD, Raman, SEM, nitrogen adsorption and desorption and electrochemical performance tests. The results showed that the obtained nano-silicon particles were uniform in size and the average particle size was about 46 nm. Their initial discharge specific capacity was 2653 mAh·g⁻¹ at 500 mA·g⁻¹ and the relative initial coulomb efficiency was 90.3 %. Moreover, they still had a large discharge capacity of 1478 mAh·g⁻¹ after 100 cycles at 500 mA·g⁻¹. Even at a large current density of 2000 mA·g⁻¹, they still retained a high specific capacity of 816 mAh·g⁻¹, showing excellent cycle performance and rate capability.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104963"},"PeriodicalIF":4.2,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of ultrasonic vibration frequency on the quality of produced NiTi and NiTi-20Hf powders for additive manufacturing applications","authors":"Mahyar Sojoodi,&nbsp;Alireza Behvar,&nbsp;Ahu Celebi,&nbsp;Nasrin Taheri Andani,&nbsp;Mohammad Pourshams,&nbsp;Mohammad Elahinia","doi":"10.1016/j.apt.2025.104945","DOIUrl":"10.1016/j.apt.2025.104945","url":null,"abstract":"<div><div>The rapid expansion of additive manufacturing (AM) technologies has intensified the demand for high-quality metal powders and prompted the need for effective recycling solutions to address waste generation during production. This study investigates the impact of ultrasonic vibration frequencies (20 kHz and 40 kHz) in an Ultrasonic-Plasma Atomization (UPA) system on recycling NiTi and NiTi-20Hf pre-alloyed powders. The objective is to evaluate the effects of frequency variation on key material properties, including impurity levels, powder characterization, and microstructural homogeneity, to determine the suitability of the recycled powder for AM applications. The findings reveal that both vibration frequencies significantly influence the properties of the recycled powders. At 40 kHz, carbon impurities increased by 39 % in NiTi and 89 % in NiTi-20Hf, while oxygen contamination rose by approximately 150 % and 60 %, respectively, compared to the virgin powders. Similarly, at 20 kHz, carbon and oxygen impurities exhibited notable increases, albeit to a lesser extent. These increases are attributed to process-induced surface area changes, thermal oxidation, and equipment-related contamination. Despite the increase in impurities, the microstructural analysis, particle size distribution, and shape uniformity of the recycled powders demonstrated consistent properties, aligning with the quality requirements typically specified for AM feedstock, such as those outlined in standards like ASTM F3049 or equivalent guidelines. By addressing the challenges of impurity management and ensuring physical consistency, this research highlights the viability of ultrasonic recycling processes as a sustainable strategy to enhance material reuse and reduce resource dependency in the AM industry.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104945"},"PeriodicalIF":4.2,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144231019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering heterogeneous Z-scheme photocatalysts Fe-BTC/CuInS2/BiVO4 integrated with carbon quantum dots to enhance the efficiency of Cr(VI) reduction and RR-195 degradation under visible light","authors":"Nguyen Duc Hai ,&nbsp;Pham Thi Mai Huong ,&nbsp;Nguyen The Huu ,&nbsp;Nguyen Xuan Huy ,&nbsp;Vuong Thi Lan Anh ,&nbsp;Hoa T. Vu ,&nbsp;Huan V. Doan ,&nbsp;Manh B. Nguyen","doi":"10.1016/j.apt.2025.104938","DOIUrl":"10.1016/j.apt.2025.104938","url":null,"abstract":"<div><div>In this study, Fe-BTC/CuInS₂/BiVO₄ composites (with Fe-BTC content ranging from 10 to 30 wt%) were synthesized followed by the incorporation of carbon quantum dots (CQDs) to form FCB-CQD photocatalysts. The resulting materials exhibit several key advantages, including high surface area, large pore volume, small particle size, efficient visible light absorption, and improved charge transport properties. The integration of CQDs significantly enhanced charge separation and reduced electron–hole recombination. A Z-scheme charge transfer mechanism was proposed and validated, enabling the FCB-CQD photocatalysts to achieve highly efficient photocatalytic reduction of Cr(VI) to Cr(III) and degradation of Reactive Red 195 (RR-195) under visible light. The 20%FCB-CQD sample achieved removal efficiencies exceeding 98 % for both pollutants. Key operational parameters, such as catalyst dosage, pollutant concentration, pH, reactive species involvement, and photocatalyst stability, were systematically investigated. Electrochemical and optical characterizations were used to construct the band structure and elucidate the electron transfer pathway. Scavenger experiments confirmed the dominant active species involved in each process, providing insight into the underlying photocatalytic mechanisms. These findings demonstrate the promising potential of FCB-CQD as an efficient and reusable photocatalyst for environmental remediation applications.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 8","pages":"Article 104938"},"PeriodicalIF":4.2,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144212555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}