CAJ | 학술논문

首先，以四氯化钛为原料，异丙醚为氧供体，二氯甲烷为溶剂，采用非水解溶胶-凝胶法合成高活性的 T iO2凝胶；其次以其为钛源，选用分子量为1300000的聚乙烯吡咯烷酮为碳源，采用碳热还原氮化法合成T iN粉体。X射线衍射仪、场发射扫描电镜和激光粒度仪测试结果表明，与水解法相比，采用非水解法合成的T iO2凝胶经800℃煅烧0．5 h仍为活性较高的锐钛矿相，以该凝胶为钛源，经1200℃碳热还原氮化2 h可合成纯度相对较高的 T iN粉体，将合成温度升至1300℃还原氮化5 h可合成更高纯度的T iN粉体。T iN粉体颗粒呈近似球形，发育较好，粒径在1μm以下，激光粒度测定粒径主要集中在10μm左右，d50为8μm。
수선，이사록화태위원료，이병미위양공체，이록갑완위용제，채용비수해용효-응효법합성고활성적 T iO2응효；기차이기위태원，선용분자량위1300000적취을희필각완동위탄원，채용탄열환원담화법합성T iN분체。X사선연사의、장발사소묘전경화격광립도의측시결과표명，여수해법상비，채용비수해법합성적T iO2응효경800℃단소0．5 h잉위활성교고적예태광상，이해응효위태원，경1200℃탄열환원담화2 h가합성순도상대교고적 T iN분체，장합성온도승지1300℃환원담화5 h가합성경고순도적T iN분체。T iN분체과립정근사구형，발육교호，립경재1μm이하，격광립도측정립경주요집중재10μm좌우，d50위8μm。
Titanium dioxide gel precursor was prepared by non -hydrolytic sol -gel method with titanium tetrachloride as raw materials ,isopropyl ether as oxygen donor and dichloromethane as solvent ,respectively .The TiN powders were syn-thetized by carbothermal reduction nitridation method with the non -hydrolytic TiO2 gel precursor as titanium source and polyvinylpyrrolidone (molecular weight 1300000) as carbon source ,respectively .The TiN powders were investigated by XRD ,FE-SEM and laser particle analysis .The results show that there was only anatase phase when the non -hydrolytic TiO2 gel was calcined at 800℃ for 0 .5 h .Using the non-hydrolytic TiO2 gel as titanium source ,the TiN powders could be synthetized at 1 200 ℃ for 2 h by carbothermal reduction nitridation process .TiN powders with higher purity would be syn-thetized when carbothermal reduction nitridation temperature was at 1 300 ℃ for 5 h .The TiN powders were nearglobular particle and their particle size was less than 1μm .The laser particle size analysis result show that the TiN powders were mainly distributed in about 10μm ,and the d50 value was 8 μm .