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A Study of Metal Ions Packing Hydrated Layer of Inclusion Crystals
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作者 Wen Sheng GUO Department of Chemistry,Liaoning Normal University,Dalain,116022Yang LU Shu Chun WANG Qi Tai ZHENG Institute of Material Medica,Chinese Acamedy of Medical Sciences,Beijing.100050Tie Jin LI Department of Chemistry,Jilin University,Changchun,130023 《Chinese Chemical Letters》 SCIE CAS CSCD 1993年第2期153-156,共4页
The inclusion crystal formed by the hexamethylenamine with p-nitrophenol has a layer type structure,and is divided or- ganic layer and inorganic layer,the latter has a width of 1.0136nm.Metal ions can enter hydrated ... The inclusion crystal formed by the hexamethylenamine with p-nitrophenol has a layer type structure,and is divided or- ganic layer and inorganic layer,the latter has a width of 1.0136nm.Metal ions can enter hydrated layer of the crystal,the con- tents of the cations and water in the crystal are determined.The XRD analysis of the layer type structure of the crystal is also giv- en. 展开更多
关键词 A Study of Metal Ions Packing Hydrated Layer of Inclusion Crystals XRD
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Improving cleanliness of 30Cr2Ni4MoV low-pressure rotor steel by CaO-SiO_(2)-MgO-Al_(2)O_(3) slag refining 被引量:1
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作者 Yong-bo Peng Cheng-song Liu +4 位作者 Ling Yang Song-wei Hou Ri-jin Cheng Hua Zhang Hong-wei Ni 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2022年第9期1434-1445,共12页
The optimal composition of a CaO-SiO_(2)-Al_(2)O_(3)-MgO slag in the ladle furnace refining process was investigated to precisely control the contents of[0]and[Si]and improve the cleanliness of 30Cr2Ni4MoV steel.The i... The optimal composition of a CaO-SiO_(2)-Al_(2)O_(3)-MgO slag in the ladle furnace refining process was investigated to precisely control the contents of[0]and[Si]and improve the cleanliness of 30Cr2Ni4MoV steel.The iso-[O]lines and iso-[Si] lines of the equilibrium between the CaO-SiO_(2)-Al_(2)O_(3)-MgO refining slag and 30Cr2Ni4MoV steel at 1873 K were calculated by the thermodynamic software FactSage 7.3,and the activities of SiO_(2),Al_(2)O_(3)and CaO in the refining slag were discussed to achieve the optimal composition range of the refining slag.Finally,combined with high-temperature"slag-steel"equilibrium experiments,the effects of different refining slags on the oxygen contents,chemical composi-tions,quantities and sizes of inclusions in steels were studied,and then the thermody namic formation mechanism of MgAl_(2)O_(4) inclusions in 30Cr2Ni4MoV steel was discussed.The results showed that the contents of dissolved[O]nd[Si]in steel can be controlled below 10 × 10^(-6)and 0.05%.respectively;when the slag basicity is above 7.the CaO/Al_(2)O_(3)ratio is above I.and the mass fraction of SiO_(2)in the slag docs not cxcced 7%.The chemical composition of the slag has a great influence on the removal and composition of inclusions.The assessed stability phase diagrams of MgO.Al_(2)O_(3)and MgOAl_(2)O_(3) inclusion formation in the Fe-Al-Mg-O system calculated by FactSage 7.3 show good agreement with the experimental results. 展开更多
关键词 30Cr2Ni4MoV steel Non metallic inclusion Refining slag BASICITY CaO/Al_(2)O_(3) ratio
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