Li-guo ZHU , Chong-lin BAI , Ling-xin KONG , Bin YANG , Bao-qiang XU
{"title":"Preparation of low-oxygen titanium powder by magnesiothermic reduction of TiO2 assisted by MgCl2-HoCl3 molten salt","authors":"Li-guo ZHU , Chong-lin BAI , Ling-xin KONG , Bin YANG , Bao-qiang XU","doi":"10.1016/S1003-6326(24)66638-0","DOIUrl":"10.1016/S1003-6326(24)66638-0","url":null,"abstract":"<div><div>To reduce the production cost of titanium, a new method for direct preparation of low-oxygen titanium powder by the magnesiothermic reduction of TiO<sub>2</sub> with the assistance of a MgCl<sub>2</sub>-HoCl<sub>3</sub> molten salt was proposed. Thermodynamic calculations showed that the magnesiothermic reduction of TiO<sub>2</sub> was feasible. However, hindrance of the reduction reaction by the reduction by-product of MgO resulted in a considerably high O concentration in the titanium powder. The addition of HoCl<sub>3</sub> to the system significantly reduces the activity of MgO to produce low-oxygen titanium powder. Thermochemical deoxidation and reduction experiments were conducted with MgCl<sub>2</sub>-HoCl<sub>3</sub> molten salt in the temperature range of 1023-1273 K. The results showed that titanium powder with oxygen concentration (mass fraction) below 5.00×10<sup>-4</sup> can be prepared at the Mg-MgCl<sub>2</sub>-HoOCl-HoCl<sub>3</sub> equilibrium.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 11","pages":"Pages 3749-3761"},"PeriodicalIF":4.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143174913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xin-yuan WANG , Tian-zhen JIAN , Ya-ting YANG , Jian-ping MA , Xian-hong LI , Zi-long XUE , Wen-qing MA , Cai-xia XU
{"title":"Enhancing zinc storage performance of Mn3O4 cathode through Ag-doping and -crosslinking dual-modification strategy","authors":"Xin-yuan WANG , Tian-zhen JIAN , Ya-ting YANG , Jian-ping MA , Xian-hong LI , Zi-long XUE , Wen-qing MA , Cai-xia XU","doi":"10.1016/S1003-6326(24)66634-3","DOIUrl":"10.1016/S1003-6326(24)66634-3","url":null,"abstract":"<div><div>Octahedral Mn<sub>3</sub>O<sub>4</sub> nanoparticles with an Ag-doping and nanoporous Ag (NPS) framework was simply fabricated through an alloying-etching engineering. The dual-modified Mn<sub>3</sub>O<sub>4</sub> (denoted as Ag-Mn<sub>3</sub>O<sub>4</sub>/NPS) consists of Ag-doped Mn<sub>3</sub>O<sub>4</sub> nanoparticles crosslinked with three dimensional nanoporous Ag framework. The incorporated Ag dopant is effective in improving the intrinsic ionic and electronic conductivities of Mn<sub>3</sub>O<sub>4</sub>, while the NPS framework is introduced to improve the electron/mass transfer across the entire electrode. Profiting from the dual-modification strategy, the Ag-Mn<sub>3</sub>O<sub>4</sub>/NPS exhibits admirable rate capability and cycling stability. A high reversible capacity of 88.7 mA·h/g can still be retained for over 1000 cycles at a current density of 1 A/g. Moreover, a series of ex-situ experimental techniques indicate that for Ag-Mn<sub>3</sub>O<sub>4</sub>/NPS electrode during the zinc ion storage, Mn<sub>3</sub>O<sub>4</sub> is electrochemically oxidized into various MnO<sub><em>x</em></sub> (e.g., Mn<sub>2</sub>O<sub>3</sub>, MnO<sub>2</sub>) species in the initial charging, and the subsequent battery reaction is actually the intercalation/deintercalation of H<sup>+</sup> and Zn<sup>2+</sup> into MnO<sub><em>x</em></sub>.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 11","pages":"Pages 3693-3706"},"PeriodicalIF":4.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143174919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ji WANG , Rui-dong FU , Tian-xiang HU , Yi-jun LI , Yue LIU , Zhi-hua ZHU , Shi-de LI , Zhe-feng XU
{"title":"Microstructural evolution and hot tensile behavior of Mg-3Zn-0.5Zr alloy subjected to multi-pass friction stir processing","authors":"Ji WANG , Rui-dong FU , Tian-xiang HU , Yi-jun LI , Yue LIU , Zhi-hua ZHU , Shi-de LI , Zhe-feng XU","doi":"10.1016/S1003-6326(24)66629-X","DOIUrl":"10.1016/S1003-6326(24)66629-X","url":null,"abstract":"<div><div>The microstructures and hot tensile behaviors of ZK30 alloys subjected to single- and multi-pass friction stir processing (FSP) were systematically investigated. Following single-pass FSP (S-FSP), coarse grains underwent refinement to 1-2 μm, with a distinct basal texture emerging in the stir zone (SZ). Additionally, second-phase particles were fragmented, dispersed, and partially dissolved. Multi-pass FSP (M-FSP) further enhanced the homogeneity of the microstructure, reduced texture intensity differences, and decreased the fraction of second-phase particles by 50%. Both S-FSP and M-FSP SZs demonstrated superplasticity at strain rates below 1×10<sup>-3</sup> s<sup>-1</sup> and at temperatures of 250-350 °C. The S-FSP SZ exhibited an elongation of 390% at 250 °C and 1×10<sup>-4</sup> s<sup>-1</sup>, while the M-FSP SZ achieved an elongation of 406% at 350 °C and 1×10<sup>-3</sup> s<sup>-1</sup>. The superplastic deformation of SZ was co-dominated by grain boundary sliding (GBS) and the solute-drag mechanism in S-FSP and mainly by GBS in M-FSP.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 11","pages":"Pages 3615-3628"},"PeriodicalIF":4.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rania E. HAMMAM , Engie M. SAFWAT , Soha A. ABDEL-GAWAD , Madiha SHOEIB , Shimaa EL-HADAD
{"title":"Influence of anodization conditions on deposition of hydroxyapatite on α/β Ti alloys for osseointegration: Atomic force microscopy analysis","authors":"Rania E. HAMMAM , Engie M. SAFWAT , Soha A. ABDEL-GAWAD , Madiha SHOEIB , Shimaa EL-HADAD","doi":"10.1016/S1003-6326(24)66630-6","DOIUrl":"10.1016/S1003-6326(24)66630-6","url":null,"abstract":"<div><div>Integrating titanium-based implants with the surrounding bone tissue remains challenging. This study aims to explore the impact of different anodization voltages (20-80 V) on the surface topography of two-phase (<em>α</em>/<em>β</em>) Ti alloys and to produce TiO<sub>2</sub> films with enhanced bone formation abilities. Scanning electron microscopy coupled with energy dispersive spectroscopy (SEM-EDS) and atomic force microscopy (AFM) were applied to investigate the morphological, chemical, and surface topography of the prepared alloys and to confirm the growth of hydroxyapatite (HA) on their surfaces. Results disclosed that the surface roughness of TiO<sub>2</sub> films formed on Ti-6Al-7Nb alloys was superior to that of Ti-6Al-4V alloys. Ti-6Al-7Nb alloy anodized at 80 V had the highest yields of HA after immersion in simulated body fluid with enhanced HA surface coverage. The developed HA layer had a mean thickness of (128.38±18.13) µm, suggesting its potential use as an orthopedic implantable material due to its promising bone integration and, hence, remarkable stability inside the human body.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 11","pages":"Pages 3629-3649"},"PeriodicalIF":4.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yi ZHANG , Han-xiao LIAO , Lu YANG , Bin-hua ZHOU , Xuan-zhi LIU , Huan-huan ZHAI , Xiao-rong HE , Hong-jun HUANG , Peng-fei TAN , Jun PAN
{"title":"Enhanced visible-light-driven reduction of hexavalent chromium under neutral conditions using quasi-MOF photocatalysts via thiocyanate modulation","authors":"Yi ZHANG , Han-xiao LIAO , Lu YANG , Bin-hua ZHOU , Xuan-zhi LIU , Huan-huan ZHAI , Xiao-rong HE , Hong-jun HUANG , Peng-fei TAN , Jun PAN","doi":"10.1016/S1003-6326(24)66633-1","DOIUrl":"10.1016/S1003-6326(24)66633-1","url":null,"abstract":"<div><div>In order to address the issue that the photocatalytic reduction of hexavalent chromium (Cr(VI)) is often limited by the inefficient utilization of electrons in photocatalysts, a quasi-MOF photocatalyst using thiocyanate (—SCN) was developed as a modulator to enhance the charge transfer properties of ZIF-L-based photocatalysts. The incorporation of —SCN introduced structural defects, which improved visible light absorption and the reduction ability of photogenerated electrons. —SCN significantly adjusted the electronic properties and established a stable electron release pathway, serving as active sites for reduction. The optimized quasi-MOF demonstrated a Cr(VI) reduction rate of 94.8% in neutral potassium thiocyanate solution under visible light without a hole scavenger. The reaction rate constant is 2.8 times that of the photocatalyst without defect modulation. This study offers a promising strategy for developing highly efficient photocatalysts for environmental remediation.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 11","pages":"Pages 3677-3692"},"PeriodicalIF":4.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143174920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qing-bo YANG , Wen-jing SHI , Wen LIU , Miao WANG , Wen-bo WANG , Li-na JIA , Hu ZHANG
{"title":"Improvement of microstructure and mechanical properties of Al-Cu-Li-Mg-Zn alloys through water-cooling centrifugal casting technique","authors":"Qing-bo YANG , Wen-jing SHI , Wen LIU , Miao WANG , Wen-bo WANG , Li-na JIA , Hu ZHANG","doi":"10.1016/S1003-6326(24)66621-5","DOIUrl":"10.1016/S1003-6326(24)66621-5","url":null,"abstract":"<div><div>The microstructure and mechanical properties of as-cast Al-Cu-Li-Mg-Zn alloys fabricated by conventional gravity casting and centrifugal casting techniques combined with rapid solidification were investigated. Experimental results demonstrated that compared with the gravity casting technique, the water-cooling centrifugal casting technique significantly reduces porosity, refines <em>α</em>(Al) grains and secondary phases, modifies the morphology of secondary phases, and mitigates both macro- and micro-segregation. These improvements arise from the synergistic effects of the vigorous backflow, centrifugal field, vibration and rapid solidification. Porosity and coarse plate-like Al<sub>13</sub>Fe<sub>4</sub>/Al<sub>7</sub>Cu<sub>2</sub>Fe phase result in the fracture before the gravity-cast alloy reaches the yield point. The centrifugal-cast alloy, however, exhibits an ultra-high yield strength of 292.0 MPa and a moderate elongation of 6.1%. This high yield strength is attributed to solid solution strengthening (SSS) of 225.3 MPa, and grain boundary strengthening (GBS) of 35.7 MPa. Li contributes the most to SSS with a scaling factor of 7.9 MPa·wt.%<sup>-1</sup>. The elongation of the centrifugal-cast alloy can be effectively enhanced by reducing the porosity and segregation behavior, refining the microstructure and changing the morphology of secondary phases.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 11","pages":"Pages 3486-3503"},"PeriodicalIF":4.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143174905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ke-chao ZHOU , Xiu-ye YANG , Yi-xin AN , Jun-yang HE , Bing-feng WANG , Xiao-yong ZHANG
{"title":"A review on advances of high-throughput experimental technology for titanium alloys","authors":"Ke-chao ZHOU , Xiu-ye YANG , Yi-xin AN , Jun-yang HE , Bing-feng WANG , Xiao-yong ZHANG","doi":"10.1016/S1003-6326(24)66618-5","DOIUrl":"10.1016/S1003-6326(24)66618-5","url":null,"abstract":"<div><div>Ti alloys, as leading lightweight and high-strength metallic materials, exhibit significant application potential in aerospace, marine engineering, biomedical, and other industries. However, the lack of fundamental understanding of the microstructure-property relationship results in prolonged research and development (R&D) cycles, hindering the optimization of the performance of Ti alloys. Recently, the advent of high-throughput experimental (HTE) technology has shown promise in facilitating the efficient and demand-driven development of next-generation Ti alloys. This work reviews the latest advancements in HTE technology for Ti alloys. The high-throughput preparation (HTP) techniques commonly used in the fabrication of Ti alloys are addressed, including diffusion multiple, additive manufacturing (AM), vapor deposition and others. The current applications of high-throughput characterization (HTC) techniques in Ti alloys are shown. Finally, the research achievements in HTE technology for Ti alloys are summarized and the challenges faced in their industrial application are discussed.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 11","pages":"Pages 3425-3451"},"PeriodicalIF":4.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143174908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kang YAN , Wen-can QUAN , Zhong-tang ZHANG , Hua-ping NIE , Rui-xiang WANG , Zhi-feng XU
{"title":"Distribution behavior of valuable elements in oxygen-enriched top-blown smelting process of waste printed circuit boards","authors":"Kang YAN , Wen-can QUAN , Zhong-tang ZHANG , Hua-ping NIE , Rui-xiang WANG , Zhi-feng XU","doi":"10.1016/S1003-6326(24)66636-7","DOIUrl":"10.1016/S1003-6326(24)66636-7","url":null,"abstract":"<div><div>Oxygen-enriched top-blown smelting is a promising technology for processing waste printed circuit boards (WPCBs). The distribution behavior of valuable elements in WPCBs during smelting was investigated by varying the oxygen-enriched concentration, oxygen volume, CaO/SiO<sub>2</sub> (mass ratio), and Fe/SiO<sub>2</sub> (mass ratio). The optimal operating conditions were obtained by implementing a one-factor-at-a-time method. X-ray diffractometer, scanning electron microscopy-energy dispersive spectrometer, and inductive coupled plasma-atomic emission spectroscopy methods were utilized to detect the chemical composition, occurrence state as well as elemental contents of alloy and slag. It is found that the elements of Cu, Sn and Ni are mainly accumulated in the alloy while Fe is mainly oxidized into the slag. The direct yields of Cu, Sn and Ni are 90.18%, 85.32% and 81.10% under the optimal conditions of temperature 1250 °C, oxygen-enriched concentration 30%, oxygen volume 24 L, CaO/SiO<sub>2</sub> mass ratio 0.55, and Fe/SiO<sub>2</sub> mass ratio 1.05. The results show that the valuable metals are mainly lost in the slag through mechanical entrainment.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 11","pages":"Pages 3721-3736"},"PeriodicalIF":4.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143174916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yi-mou LUO , Jian-ying WANG , Tao WEN , Fei-peng YANG , Meng-zhen ZHU , Na HE , Jian-ming ZHENG , Ling SHAN , Hai-lin YANG
{"title":"Effect of Ni on microstructure and mechanical properties of Al-Mg-Si alloy for laser powder bed fusion","authors":"Yi-mou LUO , Jian-ying WANG , Tao WEN , Fei-peng YANG , Meng-zhen ZHU , Na HE , Jian-ming ZHENG , Ling SHAN , Hai-lin YANG","doi":"10.1016/S1003-6326(24)66623-9","DOIUrl":"10.1016/S1003-6326(24)66623-9","url":null,"abstract":"<div><div>The microstructures and mechanical properties were systematically studied for the high-strength Al-5Mg<sub>2</sub>Si-1.5Ni alloy fabricated by laser powder bed fusion (L-PBF). It is found that the introduction of Ni (1.5 wt.%) into an Al-5Mg<sub>2</sub>Si alloy can significantly improve the L-PBF processibility and provide remarkable improvement in mechanical properties. The solidification range of just 85.5 K and the typical Al-Al<sub>3</sub>Ni eutectics could be obtained in the Ni-modified Al-5Mg<sub>2</sub>Si samples with a high relative density of 99.8% at the volumetric energy density of 107.4 J/mm<sup>3</sup>. Additionally, the refined hierarchical microstructure was mainly characterized by heterogeneous <em>α</em>-Al matrix grains (14.6 μm) that contain the interaction between dislocations and Al-Al<sub>3</sub>Ni eutectics as well as Mg<sub>2</sub>Si particles. Through synergetic effects of grain refinement, dislocation strengthening and precipitation strengthening induced by Ni addition, the L-PBFed Al-5Mg<sub>2</sub>Si-1.5Ni alloy achieved superior mechanical properties, which included the yield strength of (425±15) MPa, the ultimate tensile strength of (541±11) MPa and the elongation of (6.2±0.2)%.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 11","pages":"Pages 3521-3535"},"PeriodicalIF":4.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143174904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hong CHANG , Zhen-ya LUO , Xue-ru SHI , Xin-xin CAO , Shu-quan LIANG
{"title":"Stable and reversible zinc metal anode with fluorinated graphite nanosheets surface coating","authors":"Hong CHANG , Zhen-ya LUO , Xue-ru SHI , Xin-xin CAO , Shu-quan LIANG","doi":"10.1016/S1003-6326(24)66613-6","DOIUrl":"10.1016/S1003-6326(24)66613-6","url":null,"abstract":"<div><div>A highly stable zinc metal anode modified with a fluorinated graphite nanosheets (FGNSs) coating was designed. The porous structure of the coating layer effectively hinders lateral mass transfer of Zn ions and suppresses dendrite growth. Moreover, the high electronegativity exhibited by fluorine atoms creates an almost superhydrophobic solid−liquid interface, thereby reducing the interaction between solvent water and the zinc substrate. Consequently, this leads to a significant inhibition of hydrogen evolution corrosion and other side reactions. The modified anode demonstrates exceptional cycling stability, as symmetric cells exhibit sustained cycling for over 1400 h at a current density of 5 mA/cm<sup>2</sup>. Moreover, the full cells with NH<sub>4</sub>V<sub>4</sub>O<sub>10</sub> cathode exhibit an impressive capacity retention rate of 92.2% after undergoing 1000 cycles.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 10","pages":"Pages 3358-3371"},"PeriodicalIF":4.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}