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以自然冷却黄磷炉渣和脱硫石膏为基础原料,通过添加一定量的SiO2和Al2O3,熔融法制备了黄磷炉渣微晶玻璃.通过差热分析(DTA)、X射线衍射仪(XRD)和扫描电子显微镜(SEM)等方法分析了不同比例的黄磷炉渣与脱硫石膏对微晶玻璃晶化行为的影响.研究结果显示:在所添加黄磷炉渣与脱硫石膏的比例范围内,基础玻璃的核化温度和... 相似文献
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以中钛型含钛高炉渣为主原料制备微晶玻璃,利用渣中的TiO_2作晶核剂。采用差示扫描量热法(DSC)、X射线衍射(XRD)和扫描电子显微镜(SEM)等分析技术研究了含钛高炉渣用量的变化对基础玻璃晶化、微晶玻璃性能的影响。结果表明,渣中适量的TiO_2对玻璃晶化有较好的促进作用。渣用量较低时制得的微晶玻璃的主晶相为硅灰石,但当渣用量超过70%时,主晶相发生变化,变为钙铝黄长石等长石类矿相。中钛型含钛高炉渣用量为63%左右时,制得的微晶玻璃晶相含量合适,性能最好。此时采用的热处理制度为:核化温度720℃,保温1h,晶化温度945℃,保温2h,制得的微晶玻璃抗弯强度为121.68 MPa,显微硬度为7.81GPa。 相似文献
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以中钛型含钛高炉渣为主原料制备微晶玻璃,利用渣中的TiO2作晶核剂.采用差示扫描量热法(DSC)、X射线衍射(XRD)和扫描电子显微镜(SEM)等分析技术研究了含钛高炉渣用量的变化对基础玻璃晶化、微晶玻璃性能的影响.结果表明,渣中适量的TiO2对玻璃晶化有较好的促进作用.渣用量较低时制得的微晶玻璃的主晶相为硅灰石,但当渣用量超过70%时,主晶相发生变化,变为钙铝黄长石等长石类矿相.中钛型含钛高炉渣用量为63%左右时,制得的微晶玻璃晶相含量合适,性能最好.此时采用的热处理制度为:核化温度720℃,保温1h,晶化温度945℃,保温2h,制得的微晶玻璃抗弯强度为121.68MPa,显微硬度为7.81 GPa. 相似文献
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微晶玻璃的摩擦学特性研究进展 总被引:8,自引:0,他引:8
微晶玻璃及其复合材料在各种摩擦条件下,尤其是干摩擦下优良的摩擦学特性赋予了材料很大的研究开发潜力.本文综述了微晶玻璃的摩擦磨损行为与机制,并提出了微晶玻璃在摩擦学领域需要进一步探讨的问题. 相似文献
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介绍了国内外以冶金矿渣、尾矿渣及粉煤灰、城市垃圾焚烧飞灰为主要原料的废渣微晶玻璃的研究概况,分别对其组成、结构与性能、种类与制备等方面做了分析。重点综述了彩色废渣微晶玻璃的研究现状,在废渣微晶玻璃的基础上,调节玻璃组分,以硒粉、氧化铬、氧化锰等作为着色剂,通过采用一次着色或二次着色工艺,可制备出色彩丰富的废渣微晶玻璃,市场潜力巨大。最后展望了工业及生活废渣制备微晶玻璃的未来发展。 相似文献
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本文扼要概述了当前混凝土抗渗耐久性的研究现状,并着重阐述了利用矿渣粉、钢渣粉等冶金渣矿物掺和料,分别进行单掺和复掺来改善混凝土抗渗耐久性的试验研究情况。 相似文献
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本文以制碱白泥和粉煤灰为主要原料,添加适量添加剂,制备了白泥粉煤灰玻璃陶瓷。通过差热分析(DTA)确定了核化、晶化温度;研究了不同热处理温度对白泥粉煤灰玻璃陶瓷抗折强度的影响,并采用X射线衍射仪(XRD)和扫描电子显微镜(SEM)分析了结晶物相和微观结构。研究结果表明,热处理温度对白泥粉煤灰玻璃陶瓷的抗折强度有较大影响,最佳的热处理温度为900℃。 相似文献
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Glass-ceramics: Their production from wastes—A Review 总被引:5,自引:0,他引:5
Glass-ceramics are polycrystalline materials of fine microstructure that are produced by the controlled crystallisation (devitrification)
of a glass. Numerous silicate based wastes, such as coal combustion ash, slag from steel production, fly ash and filter dusts
from waste incinerators, mud from metal hydrometallurgy, different types of sludge as well as glass cullet or mixtures of
them have been considered for the production of glass-ceramics. Developments of glass-ceramics from waste using different
processing methods are described comprehensively in this review, covering R&D work carried out worldwide in the last 40 years.
Properties and applications of the different glass-ceramics produced are discussed. The review reveals that considerable knowledge
and expertise has been accumulated on the process of transformation of silicate waste into useful glass-ceramic products.
These glass-ceramics are attractive as building materials for usage as construction and architectural components or for other
specialised technical applications requiring a combination of suitable thermo-mechanical properties. Previous attempts to
commercialise glass-ceramics from waste and to scale-up production for industrial exploitation are also discussed. 相似文献
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The vitrification of an hazardous iron-rich waste (W), arising from slag flotation of copper production, was studied. Two glasses, containing 30wt% W were melted for 30min at 1400 degrees C. The first batch, labeled WSZ, was obtained by mixing W, blast furnace slag (S) and zeolite tuff (Z), whereas the second, labeled WG, was prepared by mixing W, glass cullet (G), sand and limestone. The glass frits showed high chemical durability, measured by the TCLP test. The crystallization of the glasses was evaluated by DTA. The crystal phases formed were identified by XRD resulting to be pyroxene and wollastonite solid solutions, magnetite and hematite. The morphology of the glass-ceramics was observed by optical and scanning electron microscopy. WSZ composition showed a high rate of bulk crystallization and resulted to be suitable for producing glass-ceramics by a short crystallization heat-treatment. WG composition showed a low crystallization rate and good sinterability; glass-ceramics were obtained by sinter-crystallization of the glass frit. 相似文献
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钢渣基微晶玻璃的制备与显微结构分析 总被引:10,自引:0,他引:10
利用钢渣进行热态浇注成型和一定的热处理 ,获得钢渣基的微晶玻璃样品。对样品进行了X 衍射分析、电子探针和扫描电镜分析 ,确定其主晶相为透灰石 (CaMg(SiO3 ) 2 ) ,晶粒形貌为叶片状 ,且叶片中有粗糙的针状的分支 ,晶粒的尺寸约为 7μm。 相似文献