共查询到17条相似文献,搜索用时 93 毫秒
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以铁合金厂铝钛渣为主要原料,通过固相反应烧结法制备钛酸铝材料,研究了锆英石对不同温度煅烧所得钛酸铝材料的分解率及烧结性能的影响。利用X射线衍射(XRD)、扫描电镜(SEM)及相关分析软件对煅烧后试样的相组成、晶胞参数、相对结晶度及微观结构进行分析。结果表明,锆英石中Zr4+和Si4+对钛酸铝中Ti4+的置换行为加速了钛酸铝材料的固相反应,加入氧化锆有利于降低钛酸铝材料的分解率,提高钛酸铝材料的致密度。升高煅烧温度可以增强锆英石对钛酸铝材料性能的影响,抑制钛酸铝材料的分解。 相似文献
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钛酸铝陶瓷及其研究现状 总被引:3,自引:1,他引:3
本文简述了钛酸铝陶瓷的制备及性能,论述了钛酸铝陶瓷的稳定性、微裂纹、低热膨胀性,讨论了工艺条件及外加剂对钛酸铝材料性能的影响,最后提出了改善钛酸铝陶瓷性能的技术途径。 相似文献
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复合添加剂对钛酸铝材料合成及稳定性的影响 总被引:6,自引:1,他引:5
本实验采用正交试验设计,研究了复合添加剂SiO2、MgO以及合成温度三因素对钛酸铝合成与稳定的影响,探讨了复合添加剂对钛酸铝的稳定机理,并在合成的基础上,对钛酸铝进行了烧结后性能测试,结果表明,复合添加剂能较好地使钛酸铝材料保持稳定,MgO与温度对钛酸铝的合成及稳定具有强烈的交互作用,烧结后钛酸铝材料在保持低热膨胀系数前提下抗折强度达52.13MPa。 相似文献
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本文简介了钛酸铝的主要性质,稳定性然酸铝原料的合成与莫来石-钛酸铝复相材料的研制。对陶瓷窑用窑具材料的各自特长和适用条件等也作了详尽的分析讨论。 相似文献
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采用原位合成技术合成莫来石一钛酸铝复相材料(ATM),并以复相材料和烧结莫来石(M60)为主要原料制备莫来石一钛酸铝窑具,借助于XRD、SEM和热态模拟试验等手段研究了烧成温度、复相材料添加量对莫来石-钛酸铝高温窑具性能和显微结构的影响.结果表明:合成的莫来石-钛酸铝复相材料适于制备高温窑具;在1 600℃烧成的窑具试样具有较高的高温抗折强度和良好的抗热震性;合成复相材料的添加量为45%时可获得综合性能好的窑具材料;热态模拟试验表明研制的莫来石-钛酸铝高温窑具适合在低于1 400℃,承重小于8 kg的条件下使用. 相似文献
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Development of Aluminum Titanate-Mullite Composite Having High Thermal Shock Resistance 总被引:4,自引:0,他引:4
Hiroyuki Morishima Zenji Kato Keizo Uematsu Katsukazu Saito Toyohiko Yano Noboru Ootsuka 《Journal of the American Ceramic Society》1986,69(10):226-C
Thermomechanical properties of aluminum titanate-mullite composites were studied for a wide composition range to develop material having high thermal shock resistance. The thermal shock resistance tended to increase with increasing aluminum titanate content. Composite having 82 vol% aluminum titanate can withstand water quench from above 1200°C and has a room-temperature strength of 60 MPa. Composite with less aluminum titanate has lower thermal shock resistance but has higher strength. The relation between thermal shock resistance and strength, Young's modulus, and thermal expansion coefficient is discussed. 相似文献
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Conclusions Aluminum titanate containing additions of alumina and aluminum phosphate is a promising material for making articles with a low or practically zero coefficient of thermal expansion at temperatures of up to 500°C.It is of interest to do further work to find materials based on aluminum titanate, alumina and aluminum phosphate with zero coefficients of expansion in various temperature ranges.The addition of alumina and aluminum phosphate confers an adequate strength to the components of aluminum titanate, a high spalling resistance (including metal resistance) with a refractoriness of the order of 1930°C. 相似文献
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钛酸铝基复相材料的研究 总被引:3,自引:0,他引:3
研究了引入莫来石和二氧化锆复合相对钛酸铝烧结性能及抗热震性能的影响。借助SEM分析了材料的断口形貌,从显微结构上解释了Al2TiO5基复相材料热震后的断裂机制。 相似文献
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《Journal of Adhesion Science and Technology》2013,27(1):11-19
X-ray photoelectron spectroscopy (XPS), also known as ESCA, was used for the studies of aluminum and steel panels treated with di(dioctyl)pyrophosphate ethylene titanate (a titanate coupling agent commercially known as KR 238S). The bonding of the titanate on aluminum and steel surfaces was investigated by the use of an angle-dependent XPS technique. The XPS studies also demonstrated that the pyrophosphate groups of the titanate molecule underwent hydrolysis when the treated aluminum panel was immersed in water at room temperature. 相似文献