不同浓度草酸溶液下AlN的水解性能研究  

Study on the Hydrolysis Performance of AlN in Different Concentrations of Oxalic Acid Solutions

作　　者：张莹莹 龙俊杰 林少敏[1] 张晨阳 余亚玲 Zhang Yingying;Long Junjie;Lin Shaomin;Zhang Chenyang;Yu Yaling(Hanshan Normal University,Chaozhou,515633)

机构地区：[1]韩山师范学院,潮州515633

出　　处：《陶瓷研究》2024年第2期88-91,共4页Ceramic Studies

基　　金：广东省教育厅科研项目《复合酸改性氮化铝陶瓷粉体的抗水解机制及烧成制度研究》(编号2022KQNCX046);国家级大学生创新创业训练计划项目《抗水解纳米ALN粉体的研究与制备》(编号202310578009)。

摘　　要：氮化铝作为一种新型先进陶瓷材料,应用领域广阔,但是氮化铝在潮湿的空气中易水解,本文探讨了草酸的浓度对AlN粉体抗水解性能的影响,在85 ℃水浴加热下。采用SEM和XRD等方法对样品进行了测试表征,结果表明在低浓度(0.01 M、0.02 M、0.03 M)草酸溶液中,随着草酸浓度增加,氮化铝水解程度减弱,水解主要固相产物为三羟铝石;高浓度草酸溶液中(0.04M、0.05M),氮化铝未水解,其表面微观结构比较光滑。随着反应时间延长,0.05M草酸作用下样品中也有三羟铝石形成样品,表面粗糙。这表明在一定的浓度和反应时间下,草酸溶液中AlN粉体不易水解,这为AlN粉体的存储、水基成型和工业化应用提供一种新思路。Aluminum nitride(AlN)as a novel advanced ceramic material possesses wide application prospects.However,AlN is prone to hydrolysis in humid air.This paper investigates the influence of oxalic acid concentration on the hydrolysis resistance of AlN powder under 85℃water bath heating.The samples were characterized using SEM and XRD techniques.The results reveal that in low concentrations(0.01 M,0.02 M,0.03 M)of oxalic acid solutions,with increasing concentration,the degree of AlN hydrolysis decreases,with the main solid-phase product being aluminum hydroxide trihydrate.In high concentrations of oxalic acid solutions(0.04M、0.05M),AlN remains unhydrolyzed,exhibiting a relatively smooth surface microstructure.With prolonged reaction time,aluminum hydroxide trihydrate also forms on the samples treated with 0.05 M oxalic acid,resulting in a rough surface.This indicates that under certain concentrations and reaction times,AlN powder in oxalic acid solutions exhibits enhanced hydrolysis resistance,providing a new perspective for the storage,aqueous forming,and industrial applications of AlN powder.

关 键 词：氮化铝 草酸 反应 抗水解 

分 类 号：TQ174[化学工程—陶瓷工业]