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您的检索式：作者名="Chunshan Che"
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| 1 | Role of silicon in steels on galvanized coatings显示文摘In this article,five kinds of silicon-containing steel sheets have been electrodeposited,and then immersed in a pure molten zinc bath at 450 °C for various periods of time.The results by scanning electron microscopy(SEM) show that the coating of the sam-ple(0.09 wt pct Si) with iron-electrodeposited pretreatment eliminates the reactive zones which are found in the coating without iron-electrodeposited pretreatment.The galvanized sample(0.28 wt pct Si) with iron-electrodeposited pretreatment exhibits a compact and coherent coating.The coating of the sample(0.37 wt pct Si) with the iron-electrodeposited pretreatment experiences a transition from a compact and coherent coating to a reactive one.The energy dispersive spectrum(EDS) results reveal that for the galvanized samples with iron-electrodeposited pretreatment,ex-cessive silicon accumulates on the surface of the substrate due to the low solubility of silicon in the Γ,after the iron layer is depleted by the increasing growth of the Fe-Zn intermetallics.With the movement of the substrate/Γ interface toward the substrate,silicon-enriched α-Fe peels off from the substrate and breaks into the particles.The particles move toward the δ layer through the Γ layer because silicon-enriched α-Fe cannot be absorbed in the Γ layer.When the particles reach the δ/Γ interface,they are dissolved in the δ layer,making the Γ layer thin or even vanish. | Chunshan CHE Jintang LU Gang KONG Qiaoyu XU | 2009 | Acta Metallurgica Sinica(English Letters)2009，22，2： | 3 |
| 2 | Ultrafast room-temperature reduction of graphene oxide by sodium borohydride,sodium molybdate and hydrochloric acid显示文摘Since graphene-based materials have shown great potential in many fields,it is important to explore ultrafast and high-efficient methods to synthesize reduced graphene oxide(rGO) using inexpensive reducing agents under mild conditions.Here,we reported a novel method for the ultrafast chemical reduction of graphene oxide(GO) at room temperature using sodium borohydride(NaBH_(4)),sodium molybdate(Na_(2)MoO_(4)) and hydrochloric acid(HCl).The reduction was carried out within 2 min.A series of characterization results revealed that the obtained reduced graphene oxide has higher reduction degree than that synthesized by NaBH_(4) alone at high temperature.Moreover,rGO electrode based on the present reducing method exhibited a superior specific capacitance of 139.8 F/g at a current density of1 A/g,indicating that it can be used as electrode materials for supercapacitors. | Jun Hu Gang Kong Yanbin Zhu Chunshan Che | 2021 | Chinese Chemical Letters2021，32，1： | 0 |
| 3 | An improved Hummers method to synthesize graphene oxide using much less concentrated sulfuric acid显示文摘The production of graphene oxide with less acid is beneficial to reduce the costs and lower the impact on the environment,but it is still a great challenge.In this work,a relatively simple,safe method for synthesizing graphene oxide with much less acid(decrease∼40%)is proposed.With assistance of the heat absorbed from environment and reaction system,the temperature of reaction system of low acid can be well controlled.More interestingly,the graphite can be completely oxidized into graphite oxide by using much less acid,with lowering the production of high-concentration aqueous waste acid(>1 mol/L,decrease∼40%).A series of characterizations show that the prepared graphene oxide has similar yield and functional groups compared with that of using the conventional method.This work provides a safe and environmentally friendly choice for the large-scale production of graphene oxide and its derivative materials. | Yanbin Zhu Gang Kong Yuling Pan Lian Liu Bo Yang Shuanghong Zhang Delin Lai Chunshan Che | 2022 | Chinese Chemical Letters2022，33，10： | 0 |
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