ZrO_(2p)包覆BN纳米涂层的固相反应合成及作用效果  

BN Nanocoating Preparation on ZrO_2 Particles by Solid Phase Chemical Reaction Route and Its Role

作　　者：贾德昌[1] 宁伟[1] 孟庆昌[1] 周玉[1] 

机构地区：[1]哈尔滨工业大学材料学院特种陶瓷研究所,黑龙江哈尔滨150001

出　　处：《稀有金属材料与工程》2008年第A01期5-9,共5页Rare Metal Materials and Engineering

基　　金：新世纪优秀人才支持计划资助

摘　　要：采用固相反应合成工艺在纳米ZrO_2颗粒(ZrO_(2p))上进行BN包覆处理,通过SEM,TEM,DSC等手段对颗粒包覆情况及其作用效果进行研究。表明以H_3BO_3,CO(NH_2)_2为原料,二者摩尔比为1∶3、按BN与ZrO_2的体积比为3∶1设计,于750℃下氮化处理,可在ZrO_2纳米颗粒上成功包覆厚度约10～50 nm的非晶BN纳米层。复合粉体的热分析和热压烧结制备的ZrO_(2p)/BN-SiO_2复合陶瓷材料组织观察证实,该涂层可有效阻止ZrO_2与SiO_2之间发生反应。BN nanocoating on ZrO2 nanosized particles was prepared by solid phase chemical route using H3BO3, CO（NH2）2 and nano-ZrO2 powders as raw materials. The microstructure of the coating and its effect on preventing chemical reaction between ZrO2 and SlOE were investigated by means of SEM, XRD, TEM and DSC techniques. Results show that the amorphous BN film could be successfully coated on ZrO2 particles with a thickness of 10～50 nm when a mole ratio of 1：3 for HaBO3 to CO（NH2）2 and volume ratio of 3：1 for BN to ZrO2 were used and nitrided at 750 ℃. The amorphous BN film can play its role very well in preventing reaction between SiO2 and ZrO2 as expected.

关 键 词：ZrO2p BN纳米涂层 BN—SiO2复合陶瓷 固相反应 

分 类 号：TB383.1[一般工业技术—材料科学与工程]