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材料科学技术（英文版）
材料科学技术（英文版）

胡壮麟

月刊

1005-0302

jmst@imr.ac.cn

024-83978208

110016

沈阳市沈河区文化路72号

材料科学技术（英文版）/Journal Journal of Materials Science & TechnologyCSCDCSTPCD北大核心EISCI
查看更多>>本刊简称《JMST》，（ISSN 1005-0302，CN 21-1315/TG）。1985年创刊。是中国科协主管，中国金属学会，中国材料研究学会和中国科学院金属研究所联合主办的国际性英文期刊，以“加强国际交流，扩大学术影响，服务经济建设”为办刊宗旨，刊登世界各国的具有创新性和较高学术水平的原始性论文，并设有物约综述、快报、简讯及国内外材料界杰出学者简介等栏目，内容包括金属材料、无机非金属材料、复合材料及有机高分子材料等。
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    Insight into microbiologically induced corrosion performance of magnesium in tryptic soy broth with S.aureus and E.coli

    Tao LiangHuanhuan ZhangHaobo PanYing Zhao...
    221-231页
    查看更多>>摘要：In this research,microbiologically induced corrosion(MIC)performance of magnesium in tryptic soy broth with S.aureus or E.coli were systematically explored.The results showed that magnesium in bi-otic solution presented higher mass loss,thicker degradation product layer and more severe pitting cor-rosion compared to abiotic solution after 24 h of immersion.Electrochemical measurements including EIS spectra and polarization curve further suggested that the corrosion rate of Mg in biotic solution in-creased during the early stage owing to the decrease of pH,which was originated from the consumption of glucose and the resulting accumulation of acidic metabolites.However,corrosion rate subsequently decreased because of the reduction of acidic metabolites and production of alkaline compound as well as the corrosion protection provided by the corrosion product and biofilm.Moreover,the corrosion rate of magnesium in high concentration of S.aureus and E.coli solution was larger than that in low concen-tration of S.aureus and E.coli solution,respectively during the initial stage,but subsequently presented a reverse variation.In addition,more severe corrosion of magnesium was observed in S.aureus solution in comparison with E.coli solution.These results suggested that the MIC performance of magnesium was closely related to the concentration and species of bacteria.
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    Boosting K-ion kinetics by interfacial polarization induced by amorphous MoO3-x for MoSe2/MoO3-x@rGO composites

    Jiangshao YangLiwen LiuDaoyi WangJianming Tao...
    232-240页
    查看更多>>摘要：Promoting interfacial reaction kinetics is highly desirable for achieving high-performances of anode ma-terial in alkali-ion batteries.Herein,flower-like MoSe2/MoO3-x@rGO composites are fabricated by a facile solvothermal method involving a thermal-treatment at 800℃.When evaluated as an anode material for potassium ion batteries,MoSe2/MoO3-x@rGO delivers 248.2 mA h g-1 after 50 cycles at 0.2 A g-1 with a capacity retention of 84.6％and 182.9 mA h g 1 after 150 cycles at 1.0 A g-1 with a capacity retention of almost 61.2％,superior to those of bare MoSe2 or MoSe2@rGO composites.Analysis from electrochemical measurements,the amorphous MoO3-x containing oxygen vacancies could not only effectively buffer the self-aggregation of MoSe2 nanosheets but also provides lots of accessible active sites for potassium ion storage.Additionally,the open channels in the amorphous MoO3-x phase lead to easier ion hopping and smaller diffusion barriers.Furthermore,the built-in electric field at the interface would be beneficial for electron transfer and K-ion migration across the hetero-junction interface.Moreover,larger dielectric po-larization induced by the high relative permittivity of amorphous MoO3-x would reduce charge transfer resistance and enhance K-ion migration across electric double-layer.Our work provides new insight into the enhanced performance of anode material coated by an amorphous layer with large relative permit-tivity.
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    Critical scale grain size for optimal lifetime of TBCs

    Lin ChenGuo-Hui MengChang-Jiu LiGuan-Jun Yang...
    241-250页
    查看更多>>摘要：Thermal barrier coatings(TBCs)suffer from spalling failure resulting from the rapid growth of thermally grown oxides(TGO)on the metallic bond coat.In this study,to achieve the optimal lifetime of TBCs,a lifetime phase diagram was constructed for the entire service of TBCs.Herein,both the thermal mismatch stress during thermal cycling and the TGO growth stress during thermal exposure were considered.First,thickening behavior of the Al2O3 scale related to grain size was investigated.Second,transverse delami-nation failure due to the thermal mismatch stress was analyzed.Third,vertical cracking failure related to early scale growth was explored.Finally,a critical scale grain size of～2.5 μm was identified for achiev-ing the optimal lifetime of TBCs.It was experimentally proved that vertical cracking of the Al2O3 scale occurred during early oxidation as the scale grain size was larger than～4 μm after pre-oxidation.The proposed lifetime phase diagram and critical scale grain size effect serve as novel criteria for the design of next-generation durable TBCs.
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    Oxidation-enhanced bonding strength of Cu sinter joints during thermal storage test

    Yue GaoJinting JiuChuantong ChenKatsuaki Suganuma...
    251-255页
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