本文通过在纳米SiC颗粒表面包覆一层Al2O3，使包覆型SiC与Al2O3具有相似的表面化学性质，从而包覆型SiC-Al2O3混合粉悬浮液具有相似于单相Al2O3悬浮液的流变性质。研究了分散剂、颗粒匹配及温度对包覆型SiC-Al2O3混合粉悬浮液流变性质的影响。结果表明，对于亚微米粉，尤其纳米粉，高聚物电解质分散剂不能改善其流变性；合适的颗粒匹配及温度可以改善悬浮液的流动性。
The surface chemical property of SiC was similar to that of Al2O3 by coating SiC with Al2O3,so that the rheological behavior of coated SiC-Al2O3 suspension was like to that of single phase Al2O3 suspension.The effect of dispersant,size distribution and temperature on rheological behavior of coated SiC-Al2O3 suspension were studied.Results indicated that polyelectrolyte did not improve rheological behavior for fine powder suspension,especially for nanosized powder suspension,but proper size distribution and temperature could.
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