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硅铝凝胶制备与晶化研究 被引量:5

Preparation and Crystallization of Si-Al Gel
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摘要 本文以铝胶和硅胶为原料,采用溶胶-凝胶方法进行了硅铝凝胶形成及晶化行为研究。结果表明,要形成稳定铝硅溶胶pH值必须控制在3以下,采用氨水和乙酰丙酮可调节胶凝时间。采用XRD和TEM研究了凝胶和不同温度热处理之后粉体组成和结构,从干凝胶至莫来石的整个形成过程首先是生成硅铝尖晶石,然后才是莫来石,所得到的粉体存在较为严重的二次团聚。在硅铝凝胶中引入氟化铝有助于莫来石晶须生成。 A study is on synthesis and crystallization of silica and alumina gel , using alumina sol and silica sol as raw materials by sol - gel method. The results of experiment show that stable silica-alumina gel was formed by controlling the value of pH 〈 3. Gelatinization time could be adjusted by adding ammonia or acetylacetone. Structure and composition of alumina-silica gel and powder after heat-treatment at different temperature were investigated by means of XRD and TEM. During the process of phase transition process Si-Al spinel was formed at first, and then mullite. Mullite powder was aggregated after heat-treatment at high temperature. The addition of AlF3 was helpful to the formation of mullite crystal whisker.
出处 《材料科学与工程学报》 CAS CSCD 北大核心 2006年第3期389-392,共4页 Journal of Materials Science and Engineering
基金 国家自然科学基金项目(60301005) 浙江省科技计划资助项目(2004C21021)
关键词 硅铝凝胶 莫来石 晶化 silica-alumina gel mullite crystallization
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参考文献10

  • 1程本军,杨辉,王家邦,陈桂花,孔德玉.刚玉-莫来石推板的研制与应用[J].耐火材料,2004,38(2):110-112. 被引量:5
  • 2禹剑,袁启明,杨正方,陈玉如.双相铝硅凝胶莫来石化及烧结行为[J].硅酸盐学报,1998,26(5):578-585. 被引量:7
  • 3岳瑞峰,王佑祥,陈春华,徐传骧.Ti与莫来石陶瓷衬底的界面反应[J].物理学报,1997,46(8):1605-1612. 被引量:2
  • 4苏春辉,王艳端,木庆铎,郑大方,隋智通.透明莫来石陶瓷薄膜的光电子能谱研究[J].光学学报,1997,17(3):342-345. 被引量:6
  • 5苏春辉,端木庆铎,王艳,隋智通.金属醇盐水解法制备莫来石透明陶瓷薄膜的研究[J].Chinese Journal of Chemical Physics,1997,10(1):73-77. 被引量:5
  • 6Schneider H,Okada K,Pask J,Mullite,Mullite Ceramics[M].Edited by Rahman S H.John Wiley & Sons,Chichester,1994,232.
  • 7Lee Jae-Ean,Kim Jae-Won,Jung Yeon-gil,Jo Chang-Yong.Effects of precursor pH and sintering temperature on synthesizing and morphology of sol-gel processed mullite[J].Ceramics International,2002,28(3):935 ~ 940.
  • 8Song Ki-Chang.Preparation of mullite fibers from aluminum isopropoxide-aluminum nitrate-tetraethylorthosilicate solutions by sol-gel method[J].Material Letter,1998,35(5-6):290 ~ 296.
  • 9Vollet Dimas R,Donatti Dario A,Domingos Roberto N,De Oliveira Ivan.Monolithic diphasic gels of mullite by sol-gel process under ultrasound stimulation[J].Ultrasonics Sonochemistry,1998,5 (2):79~ 81.
  • 10Okada Kiyoshi,Aoki Chikako,Ban Takayuki,Hayashi Shigeo,Yasumori Atsuo.Effect of Aging Temperature on the Structure of Mullite Precursor Prepared from Tetraethoxysilane and Aluminum Nitrate in Ethanol Solution[J].Journal of the European Ceramic Society,1996,16(2):149 ~ 153.

二级参考文献11

  • 1徐明霞,崔峰,靳正国,杨正方.超微莫来石粉末制备新工艺[J].硅酸盐学报,1991,19(1):80-85. 被引量:11
  • 2苏春辉,博士学位论文,1996年
  • 3蒋幼梅,玻璃非晶态科学(译),1986年,170页
  • 4丁子上,硅酸盐物理化学,1980年,206页
  • 5岳瑞峰,真空科学与技术,1997年,17卷,198页
  • 6顾诠,物理学报,1996年,45卷,832页
  • 7王佑祥,真空科学与技术,1996年,16卷,323页
  • 8苏世民,半导体技术,1994年,4卷,62页
  • 9Wei W C,J Am Ceram Soc,1988年,71卷,3期,166页
  • 10Niihara K. New design concept of structural ceramics - ceramic nanocomosites. J Ceram Soc Jpn,1991,99(10) :974 ~975

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