共查询到17条相似文献,搜索用时 562 毫秒
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钛酸铝陶瓷的性能及其应用 总被引:4,自引:0,他引:4
本对钛酸铝陶瓷的结构、热稳定性、微裂纹、低热膨胀性、机械强度及应用进行了综合阐述,并对工艺条件及添加剂对钛酸铝陶瓷性能的影响进行了讨论,给出了改善钛酸铝陶瓷性能的方法和途径,最后提出了钛酸铝陶瓷的研究开发方向。 相似文献
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介绍了一步法生产钛酸铝陶瓷升液管的配方组成和生产工艺,重点讨论了添加剂和烧成温度对钛酸铝陶瓷升液管性能的影响。结果表明:添加少量的添加剂和采用中一低温烧成技术,可以得性能优异的钛酸铝陶瓷升液管。 相似文献
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钛酸铝陶瓷是一种集高熔点和低膨胀性能在高抗热震性陶瓷及耐火材料方面具有诱人的前景,但是由于钛酸铝的不稳定和强度低的特点而限制了其应用,添加一些成分可以改善材料性能,本文针对不同添加剂的作用作了意义描述。 相似文献
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《Journal of the European Ceramic Society》2007,27(2-3):679-682
The authors started their R&D activities related to aluminium titanate (AT) ceramics in the early 1990s by addressing the critical problems of aluminium titanate, such as thermodynamical instability and micro-cracking. After that, their focus has permanently been on improving, optimizing and tailoring the properties of the aluminium titanate ceramic materials produced by reaction-sintering of equimolar mixtures of alumina and titania powders. This paper presents their latest investigations on AT ceramics produced by reaction-sintering of non-equimolar mixtures of the two main components. The objective of these investigations has been to emphasize the effects of excesses of either alumina or titania on the internal stresses build up in these materials and the consequences these internal stresses could have on some material properties which are most important for the industrial applications of AT ceramics. The ways and the extent in which these internal stresses could be controlled/managed were investigated, with the ultimate goal of expanding the possibilities for further tailoring the thermo-mechanical properties of the aluminium titanate ceramics, so that they meet specific application requirements. 相似文献
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钛酸铝陶瓷研究新进展 总被引:15,自引:4,他引:11
钛酸铝陶瓷集低膨胀和高熔点为一体,但强度低且在一定温度范围内易分解.本综述着重介绍了近年来钛酸铝陶瓷在结构、原料合成和性能改进剂等方面研究的进展,并对今后发展趋势提出了作者的基本观点. 相似文献
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采用掺杂纳米级钛酸钡和碳酸锰的方法,观察了掺杂不同量纳米级钛酸钡和碳酸锰后的钛酸钡坯片烧结所得陶瓷表面的显微组织形貌的变化,研究了单一掺杂纳米级钛酸钡、单一掺杂碳酸锰、复合掺杂碳酸锰+纳米级钛酸钡对陶瓷制品晶粒尺寸与介电性能的影响。结果表明:掺杂纳米级钛酸钡对钛酸钡陶瓷制品的介电性能有显著的提升,但是随着掺杂量的进一步增加,其介电性能的变化不大;掺杂碳酸锰对钛酸钡陶瓷晶粒的细化效果优于掺杂纳米级钛酸钡的效果;复合掺杂1%(质量分数,下同)碳酸锰+1%纳米级钛酸钡所得陶瓷的致密性高于单一掺杂1%碳酸锰的效果。 相似文献
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《应用陶瓷进展》2013,112(6):299-303
AbstractFabrication of ceramic objects by solid freeform fabrication (SFF) techniques is reviewed, with emphasis on ceramic versions of commercial rapid prototyping (RP) methods. A wide range of ceramics have been demonstrated, including aluminium oxide, silica, hydroxyapatite, silicon nitride, and lead zirconate titanate, with techniques based on extrusion, ink jet deposition, green tape lamination, and photopolymerisation. The quality of SFF ceramics compares well with conventionally processed ceramics. 相似文献
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Hao Junjie Wang Xiaohui Chen Renzheng Gui Zhilun Li Longtu 《Journal of the American Ceramic Society》2004,87(7):1404-1406
Textured bismuth titanate ceramics were successfully produced using spark plasma sintering and platelike bismuth titanate particles prepared using a molten-salt method. The microstructure and dielectric properties of the samples were investigated. The results showed that the dielectric property of the textured bismuth titanate ceramics was anisotropic in various directions and that spark plasma sintering was an effective sintering technology to obtain textured, dense bismuth titanate ceramics at a low temperature. 相似文献