对激光法制备的纳米Si-C-N粉在非空气气氛和空气气氛的环境下进行了热处理,表征了粉体表面成分的变化,研究了粉体在水中的分散行为和电动特性.结果表明:在真空和氮气中处理的粉体的分散性和稳定性较差,而适度氧化的粉体则具有较好的分散性和稳定性.在空气气氛下处理的粉体具有较低的等电点和对分散剂PAA更好的吸附能力.
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