Processing of porous cordierite bodies by starch consolidation
Processing of porous cordierite bodies by starch consolidation
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DOI：
10.1016/s0025-5408(98)00131-7
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发表时间：
1998-10-01
影响因子：
5.4
通讯作者：
Ferreira, JMF
中科院分区：
文献类型：
--
作者：
Alves, HM;Tari, G;Ferreira, JMF
利用淀粉在水中的性质，采用一种新的直接固结法，以球粘土、滑石粉、氧化铝和硅砂为原料，制备了堇青石多孔陶瓷。淀粉颗粒在温水中的胶凝能力允许将稳定的悬浮液转变成可以在绿色状态下加工的刚性和刚性体。淀粉固结可以在无孔模具中进行，使得能够通过改变粉浆组合物中的淀粉含量来获得具有受控孔隙率的材料。从工业的角度来看，该方法的简单性以及淀粉的低价格使得这种新的固结技术非常有前途。结果表明，良好的协议与堇青石烧结体的预期孔隙率，从而使多孔纹理的设计和定制的材料的应用。(C)1998 Elsevier Science Ltd.
Porous cordierite ceramics, formed from a mixture of ball clay, talc, alumina, and silica sand, were developed by a new direct consolidation method based on the properties of starch in water. The gelling capability of starch granules in warm water allows the transformation of a stable suspension into a rigid and stiff body that can be machined in the green state. Starch consolidation can be performed in nonporous molds, enabling materials with controlled porosity to be obtained by varying the starch content in the slip composition. The simplicity of the process as well as the low price of starches makes this new consolidation technique very promising from an industrial point of view. The results showed good agreement with the expected porosities of the cordierite sintered bodies, thus enabling the design of porous textures and tailoring of the material to applications. (C) 1998 Elsevier Science Ltd.