水热法合成超细氧化钇粉体的工艺调控及性能研究

Process Controlling and Performance of Ultrafine Yttrium Oxide Powder Synthesizing Via Hydrothermal Method

氧化钇作为稀土氧化物中重要的应用材料之一,固具有优良的耐高温性能和抗腐蚀性,被广泛应用于各种制造行业以及军工行业。文章研究了水热法合成超细氧化钇粉体的工艺调控及性能,通过结果分析可得结论如下:随着溶液浓度增大,氧化钇粉体颗粒粒径逐渐增大,比表面积随之逐渐减小,颗粒形貌呈棒状,当溶液浓度为0.1 mol/L时,能得到形貌可控且粒度较小的粉体颗粒。随着pH值增大,氧化钇粉体颗粒粒径逐渐减小,比表面积则逐渐增大,当pH值等于11时,可得形貌较好且粒度较小的超细氧化钇粉体。随着反应时间延长,粉体颗粒的粒径会逐渐增大,比表面积会先增大后减小,当反应时间为1天时,得到的氧化钇粉体形貌可控且粒度较小。

Yttrium oxide is one of the important application materials in rare earth oxides,which has excellent high temperature resistance and corrosion resistance,and is widely used in various manufacturing industries and military industries.In the paper,the process controlling and performance of ultrafine yttrium oxide powder synthesized by hydrothermal method are investigated.The conclusion is drawn from the analysis of the results that the particle size of the yttrium oxide powder gradually increases as the solution concentration increases,and the specific surface area gradually decreases.The particle morphology is rod-shaped.When the concentration of the solution is 0.1 mol/L,powder particles with controllable morphology and smaller particle size can be obtained.As the pH value increases,the particle size of the yttrium oxide powder particles gradually decreases,and the specific surface area gradually increases.When the pH value is equal to 11,the ultrafine yttrium oxide powder with better morphology and smaller particle size can be obtained.The particle size of the powder particles will gradually increase as the reaction time increases,and the specific surface area will increase first and then decrease.When the reaction time is 1 day,the yttrium oxide powder obtained has a controllable morphology and a smaller particle size.