{"title":"Enhancing Na+ diffusion dynamics and structural stability of O3-NaMn0.5Ni0.5O2 cathode by Sc and Zn dual-substitution","authors":"Bin-bin WANG , Yi-ming FENG , Xin LUO , Qun HUANG , Zi-xing HOU , Ya-qin WU , Peng-yu WANG , Yu-yang QI , Qing-fei MENG , Wei-feng WEI , Liang-jun ZHOU","doi":"10.1016/S1003-6326(24)66612-4","DOIUrl":"10.1016/S1003-6326(24)66612-4","url":null,"abstract":"<div><div>Sc and Zn were introduced into O3-NaMn<sub>0.5</sub>Ni<sub>0.5</sub>O<sub>2</sub> (NaMN) using the combination of solution combustion and solid-state method. The effect of Sc and Zn dual-substitution on Na<sup>+</sup> diffusion dynamics and structural stability of NaMN was investigated. The physicochemical characterizations suggest that the introduction of Sc and Zn broaden Na<sup>+</sup> diffusion channels and weaken the Na—O bonds, thereby facilitating the diffusion of sodium ions. Simulations indicate that the Sc and Zn dual-substitution decreases the diffusion barrier of Na-ions and improves the conductivity of the material. The dual-substituted NaMn<sub>0.5</sub>Ni<sub>0.4</sub>Sc<sub>0.04</sub>Zn<sub>0.04</sub>O<sub>2</sub> (NaMNSZ44) cathode delivers impressive cycle stability with capacity retention of 71.2 % after 200 cycles at 1<em>C</em> and 54.8% after 400 cycles at 5<em>C</em>. Additionally, the full cell paired with hard carbon anode exhibits a remarkable long-term cycling stability, showing capacity retention of 64.1% after 250 cycles at 1<em>C</em>. These results demonstrate that Sc and Zn dual-substitution is an effective strategy to improve the Na<sup>+</sup> diffusion dynamics and structural stability of NaMN.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 10","pages":"Pages 3344-3357"},"PeriodicalIF":4.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586946","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}
Zhi-qiang BU , Xiu-ping MA , Jia-yun WU , Zhen LÜ , Hu CHEN , Jin-fu LI
{"title":"Microstructure and mechanical properties of continuous drive friction welded Ti2AlNb alloy under different rotational rates","authors":"Zhi-qiang BU , Xiu-ping MA , Jia-yun WU , Zhen LÜ , Hu CHEN , Jin-fu LI","doi":"10.1016/S1003-6326(24)66604-5","DOIUrl":"10.1016/S1003-6326(24)66604-5","url":null,"abstract":"<div><div>Ti<sub>2</sub>AlNb-based alloy was joined in a continuous drive friction welding machine under different rotational rates (500, 1000 and 1500 r/min). The microstructure and mechanical properties of the joints were investigated. It is shown that the weld zone (WZ) is fully composed of recrystallized <em>B</em>2 phase, and the grain size decreases with increasing rotational rate. The thermo-mechanically affected zone (TMAZ) suffers severe deformation during welding, due to which most of original precipitation phase is dissolved and streamlines are present. In the heat affected zone (HAZ), only the fine <em>O</em> phase is dissolved. The as-welded joint produced using 1000 r/min has the best mechanical properties, whose strength and elongation are both close to those of the base metal, while the as-welded joint obtained using 500 r/min exhibits the worst mechanical properties. Post-weld annealing treatment annihilates the deformation microstructure and fine <em>O</em> phase precipitates in the joints, consequently improving the mechanical properties significantly. Decomposed <em>α</em><sub>2</sub> phase is a weakness for the mechanical performance of the joint since microcracks are apt to form in it in the tensile test.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 10","pages":"Pages 3221-3232"},"PeriodicalIF":4.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586825","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-hua LIU , Tian TIAN , Wei SUN , Hong-bo ZHANG , Xiang XIONG
{"title":"Microstructure and ablation behavior of Zr-based ultra-high-temperature gradient composites","authors":"Qing-hua LIU , Tian TIAN , Wei SUN , Hong-bo ZHANG , Xiang XIONG","doi":"10.1016/S1003-6326(24)66583-0","DOIUrl":"10.1016/S1003-6326(24)66583-0","url":null,"abstract":"<div><div>To obtain high-performance Zr-based ultra-high-temperature composites, Zr-based ultra-high-temperature gradient composites were prepared by changing the laying method of the infiltrant via reactive melt infiltration. The effects of different infiltrant laying methods on the microstructure and ablative properties of Zr-based ultrahigh-temperature gradient composites were investigated. The results showed that the gradient structure of the Zr-based ultrahigh-temperature gradient composites differed when the composition ratio of the infiltrant was changed. When the thicknesses of the Zr/Mo/Si layers were 6/4/12 mm and 8/2/12 mm, the SiMoZrC solid solution content in the samples increased and decreased along the infiltration direction, respectively. The gradient samples were ablated in an oxyacetylene flame at 3000 °C for 40 s. The ablation resistance of the sample was the highest when the infiltrant was a powder and the thickness of the Zr/Mo/Si layer was 6/4/12 mm.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 9","pages":"Pages 2889-2899"},"PeriodicalIF":4.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531400","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}
Ya-xin LI , Hong-xiao YANG , Qiu-ping ZHANG , Tian-zhen JIAN , Wen-qing MA , Cai-xia XU , Qiu-xia ZHOU
{"title":"In-situ building of multiscale porous NiFeZn/NiZn-Ni heterojunction for superior overall water splitting","authors":"Ya-xin LI , Hong-xiao YANG , Qiu-ping ZHANG , Tian-zhen JIAN , Wen-qing MA , Cai-xia XU , Qiu-xia ZHOU","doi":"10.1016/S1003-6326(24)66589-1","DOIUrl":"10.1016/S1003-6326(24)66589-1","url":null,"abstract":"<div><div>The development of efficient nonprecious bifunctional electrocatalysts for water electrolysis is crucial to enhance the sluggish kinetics of the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). A self-supporting, multiscale porous NiFeZn/NiZn-Ni catalyst with a triple interface heterojunction on nickel foam (NF) (NiFeZn/NiZn-Ni/NF) was in-situ fabricated using an electroplating−annealing−etching strategy. The unique multi- interface engineering and three-dimensional porous scaffold significantly modify the mass transport and electron interaction, resulting in superior bifunctional electrocatalytic performance for water splitting. The NiFeZn/NiZn-Ni/NF catalyst demonstrates low overpotentials of 187 mV for HER and 320 mV for OER at a current density of 600 mA/cm², along with high durability over 150 h in alkaline solution. Furthermore, an electrolytic cell assembled with NiFeZn/NiZn-Ni/NF as both the cathode and anode achieves the current densities of 600 and 1000 mA/cm<sup>2</sup> at cell voltages of 1.796 and 1.901 V, respectively, maintaining the high stability at 50 mA/cm<sup>2</sup> for over 100 h. These findings highlight the potential of NiFeZn/NiZn-Ni/NF as a cost-effective and highly efficient bifunctional electrocatalyst for overall water splitting.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 9","pages":"Pages 2972-2986"},"PeriodicalIF":4.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531406","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}
Qiang WANG , Meng WANG , Zong-yu FENG , Yong-qi ZHANG , Xiao-wei HUANG , Xiang-xin XUE
{"title":"Efficient removal of Al(III) and P507 from high concentration MgCl2 solution based on in-situ reaction strategy","authors":"Qiang WANG , Meng WANG , Zong-yu FENG , Yong-qi ZHANG , Xiao-wei HUANG , Xiang-xin XUE","doi":"10.1016/S1003-6326(24)66594-5","DOIUrl":"10.1016/S1003-6326(24)66594-5","url":null,"abstract":"<div><div>For a highly efficient recycling of a wastewater containing a high concentration of MgCl<sub>2</sub>, Al(III) and P507 were scheduled to be removed in advance. In this study, the in-situ removal of Al(III) and P507 from a high concentration MgCl<sub>2</sub> solution at different pH values and Al/P molar ratios was investigated. The results showed that P507 formed organic complexes of Al<sub><em>x</em></sub>(OH)<sup><em>z</em>+</sup><sub><em>y</em></sub>-P507 at pH of 2.0−4.0. At pH of 4.0−5.0, Al(III) precipitated and transferred into Al(OH)<sub>3</sub> with a flocculent amorphous morphology. Active sites on the Al(OH)<sub>3</sub> surface enhanced the removal efficiency of P507. At pH of 6.0−6.5, Al(III) and Mg(II) formed layered crystalline Al(OH)<sub>3</sub> and MgAl<sub>2</sub>(OH)<sub>8</sub> with small pore channels and fewer active sites, resulting in a reduced removal efficiency of P507. When the Al/P molar ratio exceeded 13 and the pH was between 4.0 and 5.0, the removal rates of both Al(III) and P507 were higher than 98%, while the concentration loss of Mg(II) was only 0.2%−0.9%.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 9","pages":"Pages 3042-3053"},"PeriodicalIF":4.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531307","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}
Kai SUN , Lin WANG , Hang SU , Jia-yi GENG , Qiang ZHANG , Bo MENG , Zeng-yan WEI , Gao-hui WU
{"title":"Damping properties and mechanism of aluminum matrix composites reinforced with glass cenospheres","authors":"Kai SUN , Lin WANG , Hang SU , Jia-yi GENG , Qiang ZHANG , Bo MENG , Zeng-yan WEI , Gao-hui WU","doi":"10.1016/S1003-6326(24)66573-8","DOIUrl":"10.1016/S1003-6326(24)66573-8","url":null,"abstract":"<div><div>The damping properties were improved by preparing Al matrix composites reinforced with glass cenospheres through the pressure infiltration method. Transmission electron microscopy and scanning electron microscopy were employed to characterize the microstructure of the composites. The low-frequency damping properties were examined by using a dynamic mechanical thermal analyzer, aiming at exploring the changing trend of damping capacity with strain, temperature, and frequency. The findings demonstrated that the damping value rose as temperature and strain increased, with a maximum value of 0.15. Additionally, the damping value decreased when the frequency increased. Dislocation damping under strain and interfacial damping under temperature served as the two primary damping mechanisms. The increase in the density of dislocation strong pinning points following heat treatment reduced the damping value, which was attributed to the heat treatment enhancement of the interfacial bonding force of the composites.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 9","pages":"Pages 2743-2755"},"PeriodicalIF":4.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531409","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}
{"title":"Microstructure, interfacial reaction behavior, and mechanical properties of Ti3AlC2 reinforced Al6061 composites","authors":"Zhi-bin LIU , Jia-bao BAO , Wen-jie HU , Hong YAN","doi":"10.1016/S1003-6326(24)66574-X","DOIUrl":"10.1016/S1003-6326(24)66574-X","url":null,"abstract":"<div><div>The interfacial reaction behavior of Al and Ti<sub>3</sub>AlC<sub>2</sub> at different pouring temperatures and its effect on the microstructure and mechanical properties of the composites were investigated. The results show that the addition of 3.0 wt.% Ti<sub>3</sub>AlC<sub>2</sub> refines the average grain size of <em>α</em>(Al) in the composite by 50.1% compared to Al6061 alloy. Morphological analyses indicate that an in-situ Al<sub>3</sub>Ti transition layer of ~180 nm in thickness is generated around the edge of Ti<sub>3</sub>AlC<sub>2</sub> at 720 °C, forming a well-bonded Al−Al<sub>3</sub>Ti interface. At this processing temperature, the ultimate tensile strength of Al6061−3.0 wt.%Ti<sub>3</sub>AlC<sub>2</sub> composite is 199.2 MPa, an improvement of 41.5% over the Al6061 matrix. Mechanism analyses further elucidate that 720 °C is favourable for forming the nano-sized transition layer at the Ti<sub>3</sub>AlC<sub>2</sub> edges. And, the thermal mismatch strengthening plays a dominant role in this state, with a strengthening contribution of about 74.8%.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 9","pages":"Pages 2756-2771"},"PeriodicalIF":4.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531410","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}
{"title":"Strength and plasticity improvement induced by strong grain refinement after Zr alloying in selective laser-melted AlSiMg1.4 alloy","authors":"Yao-xiang GENG , Chun-feng ZAI , Jiang YU , Hao TANG , Hong-wei LÜ , Zhi-jie ZHANG","doi":"10.1016/S1003-6326(24)66572-6","DOIUrl":"10.1016/S1003-6326(24)66572-6","url":null,"abstract":"<div><div>In order to enhance the mechanical properties of the selective laser-melted (SLM) high-Mg content AlSiMg1.4 alloy, the Zr element was introduced. The influence of Zr alloying on the processability, microstructure, and mechanical properties of the alloy was systematically investigated through performing microstructure analysis and tensile testing. It was demonstrated that the SLM-fabricated AlSiMg1.4−Zr alloy exhibited high process stability with a relative density of over 99.5% at various process parameters. Besides, the strong grain refinement induced by the primary Al<sub>3</sub>Zr particle during the melt solidification process simultaneously enhanced both the strength and plasticity of the alloy. The values for the yield strength, ultimate tensile strength, and elongation of the SLM-fabricated AlSiMg1.4−Zr were (343±3) MPa, (485±4) MPa, and (10.2±0.2)%, respectively, demonstrating good strength− plasticity synergy in comparison to the AlSiMg1.4 and other Al−Si-based alloys fabricated by SLM.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 9","pages":"Pages 2733-2742"},"PeriodicalIF":4.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531309","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}
{"title":"Effect of inorganic salt impurities on seeded precipitation of silica hydrate from sodium silicate solution","authors":"Xiao-bin LI, Xiao-bing GAO, Qiu-sheng ZHOU, Yi-lin WANG, Tian-gui QI, Lei-ting SHEN, Gui-hua LIU, Zhi-hong PENG","doi":"10.1016/S1003-6326(24)66592-1","DOIUrl":"10.1016/S1003-6326(24)66592-1","url":null,"abstract":"<div><div>To clarify the precipitation of silica hydrate from the real desilication solutions of aluminosilicate solid wastes by adding seeds and improve integrated waste utilization, the seeded precipitation was studied using synthesized sodium silicate solution containing different inorganic salt impurities. The results show that sodium chloride, sodium sulfate, sodium carbonate, or calcium chloride can change the siloxy group structure. The number of high-polymeric siloxy groups decreases with increasing sodium chloride or sodium sulfate concentration, which is detrimental to seeded precipitation. Calcium chloride favors the polymerization of silicate ions, and even the chain groups precipitate with the precipitation of high-polymeric sheet and cage-like siloxy groups. The introduced sodium cations in sodium carbonate render a more open network structure of high-polymeric siloxy groups, although the carbonate ions favor the polymerization of siloxy groups. No matter how the four impurities affect the siloxy group structure, the precipitates are always amorphous opal-A silica hydrate.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 9","pages":"Pages 3016-3028"},"PeriodicalIF":4.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531311","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}
Lun FU , Bin YANG , Yun-chang GUO , Chao YU , Hong XIAO
{"title":"Bonding enhancement of cold rolling TA1 P-Ti/AA6061 composite plates via surface oxidation treatment","authors":"Lun FU , Bin YANG , Yun-chang GUO , Chao YU , Hong XIAO","doi":"10.1016/S1003-6326(24)66581-7","DOIUrl":"10.1016/S1003-6326(24)66581-7","url":null,"abstract":"<div><div>TA1 P-Ti/AA6061 composite plate was produced by oxidizing the surface of the titanium plate and adopting a cold roll bonding process. The results revealed that the oxide film (Ti<sub>6</sub>O) prepared on the surface of TA1 pure titanium was easy to crack during the cold roll bonding, thereby promoting the formation of an effective mechanical interlock at the interface, which can effectively reduce the minimum reduction rate of the composite plates produced by cold rolling of titanium and aluminium plates. Moreover, the composite plate subjected to oxidation treatment exhibited high shear strength, particularly at a 43% reduction rate, achieving a commendable value of 117 MPa. Based on oxidation treatment and different reduction rates, the annealed composite plates at temperatures of 400, 450, and 500 °C displayed favorable resistance to interface delamination, highlighting their remarkable strength−plasticity compatibility as evidenced by a maximum elongation of 31.845%.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"34 9","pages":"Pages 2864-2880"},"PeriodicalIF":4.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531398","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}