高钛矿渣-微硅粉协同制备多孔陶瓷的孔结构调控  

Pore Structure Regulation of Porous Ceramics Synergistically Prepared by High Titanium Slag and Micro Silicon Powder

作　　者：杨益[1] 刘来宝[1] YANG Yi;LIU Laibao(School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China)

机构地区：[1]西南科技大学材料与化学学院,四川绵阳621010

出　　处：《西南科技大学学报》2023年第1期8-14,39,共8页Journal of Southwest University of Science and Technology

摘　　要：为提升高钛矿渣和微硅粉资源化利用率,以高钛矿渣、微硅粉、氧化铝和氧化镁为原料,通过高温固相法制备多孔陶瓷,研究了高钛矿渣掺量及烧成制度对多孔陶瓷的孔结构和物理性能的影响。结果表明:高钛矿渣掺量(质量分数)从25%增加到40%,孔隙率从72.6%下降到33.2%;烧成温度从1200℃升至1310℃,孔隙率从5.0%增加到62.3%;保温时间从30 min升至8 h,孔隙率在60%附近变化,对孔结构调控影响相对较小。高钛矿渣掺量为25%、烧成温度为1250℃、保温2 h的多孔陶瓷性能最佳,吸水率为2.13%,体积密度为1.15 g/cm^(3),孔隙率为72.6%。高钛矿渣掺量、烧成温度和保温时间可有效调控多孔陶瓷的孔隙率、体积密度和吸水率,实现对多孔陶瓷的孔结构调控。To enhance the resource utilization of high titanium slag and micro silicon powder,porous ceramics were prepared by high temperature solid phase method using high titanium slag,micro silicon powder,aluminum oxide and magnesium oxide as raw materials.The effects of high titanium slag content and sintering system on the pore structure and physical properties of porous ceramics were studied.The results show that as the content of high titanium slag(mass fraction)increases from 25%to 40%,the porosity decreases from 72.6%to 33.2%.With the sintering temperature rising from 1200℃to 1310℃,the porosity increases from 5.0%to 62.3%.As the holding time increases from 30 min to 8 h,the porosity changes around 60%,indicating that the holding time has little influence on the pore structure regulation.The porous ceramics with high titanium slag content of 25%,sintering temperature of 1250℃,and holding time of 2 h have the best performance,and their water absorption,volume density and porosity are 2.13%,1.15 g/cm^(3)and 72.6%,respectively.The amount of high titanium slag,sintering temperature and holding time can effectively regulate the porosity,volume density and water absorption of porous ceramics,and realize the control of porous ceramics on the pore structure.

关 键 词：高钛矿渣 微硅粉 多孔陶瓷 孔结构 烧成温度 保温时间 

分 类 号：TU528.04[建筑科学—建筑技术科学]