The wetting of steel sheet by liquid Zn+5 wt%Al alloy has been measured by the Meniscograph. The result shows that the addition of mischmetal in Zn+5 wt%Al alloy decreases the surface tension of the alloy,reduces the ...The wetting of steel sheet by liquid Zn+5 wt%Al alloy has been measured by the Meniscograph. The result shows that the addition of mischmetal in Zn+5 wt%Al alloy decreases the surface tension of the alloy,reduces the wetting angle of the liquid alloy raising in steel substrate surface and enhances the adhesive power and wettability between them.It is concluded that the mischmetal addition in baths influences the reac- tion between steel sheet and liquid Zn+5 wt%Al alloy and thus improves the wettability of them.展开更多
The microstructure evolution of the Mg 5Zn 0.63Er（mass fraction,%） alloy containing quasicrystalline phase（I-phase） under the as-cast condition was investigated via different heat treatments.The results show that ...The microstructure evolution of the Mg 5Zn 0.63Er（mass fraction,%） alloy containing quasicrystalline phase（I-phase） under the as-cast condition was investigated via different heat treatments.The results show that apart from the precipitation of the W-phase particles,the I-phase almost dissolves into the matrix after solid solution treatment at 480℃ for 10 h（T4 state）.The solution-treated alloy was aged at 175℃ for 6-100 h（T6 state）.The ultimate tensile strength of the peak-aged alloy is approximately 261 MPa companying with an elongation of 10.5%.The improvement of the tensile strength is mainly attributed to the presence of the rod-like MgZn 2 particles.展开更多
Constructing a protective layer on Zn anode surface with high lattice matching to Zn(002)can facilitate preferential growth along the(002)crystal plane and suppress dendritic growth as well as interface side reactions...Constructing a protective layer on Zn anode surface with high lattice matching to Zn(002)can facilitate preferential growth along the(002)crystal plane and suppress dendritic growth as well as interface side reactions.Whereas most of protective layers are complex and costly,making commercial applications challenging.Herein,we introduce a facile method involving the addition of CuCl_(2) electrolyte additives to conventional electrolyte systems,which,through rapid displacement reactions and controlled electrochemical cycling,forms a CuZn_(5) alloy layer with 97.2%lattice matching to the(002)plane(CuZn_(5)@Zn),thus regulating the(002)plane epitaxial deposition.As a result,the symmetric cells with CuZn_(5)@Zn demonstrate an ultra-long cycle life of 3600 h at 1 mA cm^(-2).Under extreme conditions of high current density(20 m A cm^(-2))and high zinc utilization(DOD_(Zn)=50%),stable cycling performance is maintained for 220 and 350 h,respectively.Furthermore,the CuZn_(5)@Zn||NH_(4)V_(4)O_(10)full cell maintains a capacity of 120 m A h g^(-1)even after 10,000 cycles at a high current density of 10 A g^(-1).This work presents a facile and efficient strategy for constructing stable metal anode materials,with implications for the development of next-generation rechargeable batteries.展开更多
HOT-DIPPING Zn+5% Al + (0.01%-0.2%) RE alloy on steel surface by the gas reductionmethod is a new technology. Owing to its good anti-corrosive and forming properties as wellas good technical periormances, the coating ...HOT-DIPPING Zn+5% Al + (0.01%-0.2%) RE alloy on steel surface by the gas reductionmethod is a new technology. Owing to its good anti-corrosive and forming properties as wellas good technical periormances, the coating attracts wide interest and has been put into indus-trial production rapidly. The authors successfully produced the coating by the electrolytic ac-tivity aid agent method and put it into industrial production. The products have been used inthe electric power and railway engineerings. Results show that the anti-corrosive展开更多
The strength of traditional Al-Mg alloys is relatively low because it mainly relies on solid solution strengthening.Adding a third component to form precipitation can improve their strength,but it usually leads to hig...The strength of traditional Al-Mg alloys is relatively low because it mainly relies on solid solution strengthening.Adding a third component to form precipitation can improve their strength,but it usually leads to high-stress corrosion cracking(SCC)sensitivity due to the formation of high-density precipitates at grain boundaries(GBs).So far,it is still challenging to improve the strength of Al-Mg alloys without re-ducing SCC resistance.Herein,a nanostructured Al-5Mg-3 Zn alloy with a good yield strength of 336 MPa and good elongation was successfully produced.By dynamic plastic deformation and appropriate anneal-ing treatment,near-equiaxed nanograins were introduced in the nanostructured Al-5Mg-3 Zn alloy with a high proportion(71%)of the low-angle grain boundary.TEM statistical investigations show that the pre-cipitation of active T’phase at GBs has been greatly suppressed in the nanostructured Al-5Mg-3 Zn alloy at sensitized conditions,and the area fraction of GB precipitates is reduced from 72%to 21%,which sig-nificantly decreases the SCC susceptibility.This study provides guidance for developing advanced Al-Mg alloy with high SCC resistance.展开更多
文摘The wetting of steel sheet by liquid Zn+5 wt%Al alloy has been measured by the Meniscograph. The result shows that the addition of mischmetal in Zn+5 wt%Al alloy decreases the surface tension of the alloy,reduces the wetting angle of the liquid alloy raising in steel substrate surface and enhances the adhesive power and wettability between them.It is concluded that the mischmetal addition in baths influences the reac- tion between steel sheet and liquid Zn+5 wt%Al alloy and thus improves the wettability of them.
基金Project(2007CB613706) supported by the National Basic Research Program of ChinaProjects(151071004,51101002) supported by the National Natural Science Foundation of China
文摘The microstructure evolution of the Mg 5Zn 0.63Er（mass fraction,%） alloy containing quasicrystalline phase（I-phase） under the as-cast condition was investigated via different heat treatments.The results show that apart from the precipitation of the W-phase particles,the I-phase almost dissolves into the matrix after solid solution treatment at 480℃ for 10 h（T4 state）.The solution-treated alloy was aged at 175℃ for 6-100 h（T6 state）.The ultimate tensile strength of the peak-aged alloy is approximately 261 MPa companying with an elongation of 10.5%.The improvement of the tensile strength is mainly attributed to the presence of the rod-like MgZn 2 particles.
基金financially supported by the National Key R&D Program of China(2022YFB3807700)the National Natural Science Foundation of China(Grant no.52125405 and U22A20108)+4 种基金the support from the Hubei Provincial Natural Science Foundation of China(Grant No.2023AFB155)the opening project of State Key Laboratory of Metastable Materials Science and Technology(Yanshan University)(opening project number:202401,202404)the Thailand Science Research and Innovation Fund Chulalongkorn University(INDF67620003)the National Science,Research and Innovation Fund(NSRF)via the Program Management Unit for Human Resources&Institutional Development,Research and Innovation(Grant no.B05F640153)the National Research Council of Thailand(NRCT)and Chulalongkorn University(N42A660383)。
文摘Constructing a protective layer on Zn anode surface with high lattice matching to Zn(002)can facilitate preferential growth along the(002)crystal plane and suppress dendritic growth as well as interface side reactions.Whereas most of protective layers are complex and costly,making commercial applications challenging.Herein,we introduce a facile method involving the addition of CuCl_(2) electrolyte additives to conventional electrolyte systems,which,through rapid displacement reactions and controlled electrochemical cycling,forms a CuZn_(5) alloy layer with 97.2%lattice matching to the(002)plane(CuZn_(5)@Zn),thus regulating the(002)plane epitaxial deposition.As a result,the symmetric cells with CuZn_(5)@Zn demonstrate an ultra-long cycle life of 3600 h at 1 mA cm^(-2).Under extreme conditions of high current density(20 m A cm^(-2))and high zinc utilization(DOD_(Zn)=50%),stable cycling performance is maintained for 220 and 350 h,respectively.Furthermore,the CuZn_(5)@Zn||NH_(4)V_(4)O_(10)full cell maintains a capacity of 120 m A h g^(-1)even after 10,000 cycles at a high current density of 10 A g^(-1).This work presents a facile and efficient strategy for constructing stable metal anode materials,with implications for the development of next-generation rechargeable batteries.
文摘HOT-DIPPING Zn+5% Al + (0.01%-0.2%) RE alloy on steel surface by the gas reductionmethod is a new technology. Owing to its good anti-corrosive and forming properties as wellas good technical periormances, the coating attracts wide interest and has been put into indus-trial production rapidly. The authors successfully produced the coating by the electrolytic ac-tivity aid agent method and put it into industrial production. The products have been used inthe electric power and railway engineerings. Results show that the anti-corrosive
基金This research was financially supported by the National Nat-ural Science Foundation of China(Grant No.52171088)the Young Elite Scientists Sponsorship Program by CAST(grant No.2022QNRC001).We thank X.Si for assistance in sample prepara-tion.
文摘The strength of traditional Al-Mg alloys is relatively low because it mainly relies on solid solution strengthening.Adding a third component to form precipitation can improve their strength,but it usually leads to high-stress corrosion cracking(SCC)sensitivity due to the formation of high-density precipitates at grain boundaries(GBs).So far,it is still challenging to improve the strength of Al-Mg alloys without re-ducing SCC resistance.Herein,a nanostructured Al-5Mg-3 Zn alloy with a good yield strength of 336 MPa and good elongation was successfully produced.By dynamic plastic deformation and appropriate anneal-ing treatment,near-equiaxed nanograins were introduced in the nanostructured Al-5Mg-3 Zn alloy with a high proportion(71%)of the low-angle grain boundary.TEM statistical investigations show that the pre-cipitation of active T’phase at GBs has been greatly suppressed in the nanostructured Al-5Mg-3 Zn alloy at sensitized conditions,and the area fraction of GB precipitates is reduced from 72%to 21%,which sig-nificantly decreases the SCC susceptibility.This study provides guidance for developing advanced Al-Mg alloy with high SCC resistance.
