共查询到20条相似文献,搜索用时 62 毫秒
1.
介绍了水热合成氧化锆的发展历程以及水热法制备氧化锆的特点和发展趋势。水热合成是一种合成氧化锆的重要方法,自发明以来就是该领域的研究热点。同时,介绍了氧化锆在陶瓷增韧、催化剂及载体、离子导电和生物等方面的应用。由于氧化锆的优异性质,其应用范围将越来越广阔。 相似文献
3.
氧化锆在催化剂中的应用 总被引:5,自引:0,他引:5
赵贵木 《化学工业与工程技术》1996,17(1):23-26
介绍了氧化锆在固体超强酸催化剂、加氢催化剂、甲烷选择性氧化制甲醇膜催化剂、合成异构烃等方面具有的独特的活性和选择性。并对某些催化剂的制取方法也作了一般性叙述。 相似文献
4.
1 前言当今世界,高新技术蓬勃发展,人们要求制造出传统材料所不具备的性能优异的新材料。由精细的、表面活性的氧化锆微粉出发制造的氧化锆精细陶瓷就是其中的一种。氧化锆精细陶瓷与其它陶瓷一样,除了具有耐磨性和抗蚀性以外,更大的优点是熔点高,在接近大部分金属和合金的熔点时,仍保持有足够的机械强度,由于这个原因,陶瓷被认为是未来取代高温工程金属的“材料”。 相似文献
5.
6.
7.
8.
纳米材料由于其独特的表面效应,全积效应以及量子尺寸效应,使得材料的电学,力学,磁学,光学等性能产生了惊人的变化,纳米技术在精细陶瓷,化工,微电子学,生物工程,医学等领域的成功应用及其广阔的应用前景,使得纳米材料及其技术成为目前科学研究的热点之一,被认为是21世纪的又一次产业革命。 相似文献
9.
三氯氢硅在生产中消耗大量的氯气和氢气,是氯碱企业的一种很好的平衡氯气提高经济效益的产品。我国经济的飞速发展,尤其是精细化工、有机硅产业、电子产品、光纤通讯等行业的快速发展,为三氯氢硅的生产和下游产品的开发提供了巨大的市场空间和机遇。 三氯氢硅不仅是制造硅烷偶联剂和其它有机硅 相似文献
10.
阐述了ZO系列氧化锆分析仪的结构、工作原理、运行维护和变送器的调试。着重讨论了实际使用中的常见故障,分析了它们的形成原因,并给出了排除方法 相似文献
11.
John A. Duffy 《Journal of the American Ceramic Society》1989,72(10):2012-2013
The relationship between electronic polarizability of oxide(—II), αO 2− , and the electron donor power, expressed as the optical basicity, ∧, indicates that ∧(TiO2 ) is much greater than ∧(SiO2 ) and is approximately the same as ∧(CaO). Such a high basicity is supported by the trend in the Racah B parameter for the Ni2+ ion in crystalline hosts and is also indicated from αO 2− values of glasses containing TiO2 . Electronic polarizability and other data for zirconium(IV) media indicate that ZrO2 also has a high basicity, but that ∧(ZrO2 ) is somewhat less than ∧(TiO2 ). 相似文献
12.
13.
Influence of Fracture Toughness on the Wear Resistance of Yttria-Doped Zirconium Oxide 总被引:2,自引:0,他引:2
Travgott E. Fischer Michael P. Anderson Said Jahanmir 《Journal of the American Ceramic Society》1989,72(2):252-257
Yttria-doped zirconium oxide was prepared in the fully tetragonal, mixed tetragonal and cubic, and the fully cubic phases by varying the yttria conent. The fracture toughnesses of the materials were 11.6, 8.7, and 2.5 Mpa · m½, respectively. The wear resistance, measured in air at room temperature in slow sliding (1 mm/s speed and 9.8 N load), increases by a factor of 1200 from the brittle to the toughest material; it is proportional to the fourth power of toughness. Wear occurs predominantly by fracture in the brittle (cubic) material; plastic deformation is observed in the tougher zirconium oxide. 相似文献
14.
15.
锆化合物材料应用现状及其展望 总被引:6,自引:0,他引:6
综述了锆化合物材料在现代工业及高新技术领域中的应用,收集了最新科研成果及当今科技发展趋势与锆化合物材料应用背景,显示了锆材料的发展具有不可替代的优越性。 相似文献
16.
Paul M. Sheedy Hugo S. Caram Helen M. Chan Martin P. Harmer 《Journal of the American Ceramic Society》2001,84(5):986-990
In the reaction-bonded aluminum oxide (RBAO) process, attrition-milled Al/Al2 O3 powder compacts are reacted in air to form Al2 O3 -based ceramics. Typically, ZrO2 powder is added to control the final microstructure and properties, resulting in fine-grained, high-strength materials. In this study, the effects of ZrO2 on the reactivity of RBAO samples were examined using thermogravimetric analysis, X-ray diffractometry, and other techniques. Previously, it was shown that a self-propagating reaction could occur during firing of RBAO in air. This reaction was attributed solely to the fast and highly exothermic oxidation of the aluminum on the surface of the sample, but the results of the current study show that it is related to a reaction between aluminum and ZrO2 , forming Al2 O3 and Al3 Zr. As a consequence, a new reaction sequence for RBAO consistent with these observations has been proposed. 相似文献
17.
18.
高纯氧化镁作为一种重要的无机化工产品,在工业的各个领域得到了广泛的应用。对高纯氧化镁的应用做了简单的介绍;比较了国内外高纯氧化镁的研究状况。从长远发展看,高纯氧化镁的研究和生产前景广阔。 相似文献
19.