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,液固比对水解pH值有一定影响,搅拌在一定程度上能加速反应进程,而粒度对水解反应没有明显影响.与AlN粉末和AlN陶瓷块体相比较,铝灰中的AlN在水解反应活性及生成物等方面均存在差别.关键词:铝灰;AlN;水解Hydrolysis behavior of AlN in aluminum drossJIANG Lan, QIU Ming-fang, DING You-dong, SU Nan, YAO... and time and other factors on the hydrolysis of AlN in aluminum dross were investigated by measuring the pH value of suspension and the AlN content in the reaction products. The results show that ammonia......
Trans. Nonferrous Met. Soc. China 28(2018) 2574-2581 Effects of AlN hydrolysis on fractal geometry characteristics of residue from secondary aluminium dross using response surface methodology Yong... of aluminium nitride (AlN) hydrolysis on fractal geometry characteristics of residue from secondary aluminium dross were studied using response surface methodology. The results show that the fractal......
值与理论值对比情况(部分) Table 4 Comparison between experimental modified value and theoretical modified value of AlN hydrolysis process in aluminum dross (part) 3 结论 1) 通过对铝灰渣水解过程的热动力学模型研究,发现标准摩尔生成.... Study on the properties of aluminum dross and the behaviors of AlN in hydrolysis and roasting processes[D]. Shenyang: Northeastern University, 2008: 1-3. [2] 李远兵, 孙 莉, 赵 雷, 常 娜, 周 胜, 李亚伟. 铝灰的综合利用[J......
(OH)3特征峰,可能由于生成Al(OH)3含量较低,导致其特征峰不明显所致. 图2 水解前后铝灰XRD谱 Fig. 2 XRD patterns of aluminum dross before and after hydrolysis 表5 铝灰与水洗后铝灰AlN的晶格常数 Table 5 Lattice parameters (a, b, c) of AlN in aluminum dross before and after hydrolysis 供试铝灰与水解后铝灰SEM分析进一步表明,原铝灰形貌表面不均匀,疏松多孔状,水解后变为紧密颗粒团聚状,粒子之间出现一定的团聚,表明水解反应使水分子介入,促进AlN水解产物的晶粒长大,加强了产物的凝胶作用,这也与张宇等[10]的研究相一致. 表4 303~373 K下AlN水解......
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文章编号: 1004-0609(2005)12-1974-06 沉淀前驱物制备AlN陶瓷粉末 秦明礼1, 杜学丽1, 2, 李 帅1, 孙 伟1, 曲选辉1, 3 (1. 北京科技大学 材料科学与工程学院, 北京 100083; 2. 天津理工大学 材料科学与工程学院, 天津 300191; 3. 中南大学 粉末冶金国家重点实验室, 长沙 410083) 摘 要: 以硝酸铝和碳黑为原料, 利用化学沉淀法制备出混合均匀的Al2O3+C前驱物, 并以该前驱物为原料采用碳热还原法制备了AlN粉末. 研究了氮化反应温度, pH值, 表面活性剂, 溶液浓度, 氮气流量和碳铝比等工艺参数对氮化反应的影响, 得出的最佳工艺参数分别为: 以0.4mol/L的硝酸铝溶液和比表面积为156m2/g的碳黑为原料, 控制原料中碳铝比为3∶1, 添加适量的硬脂酸(SA)和......
In-Situ Synthesis of AlN Powders and Composite AlN Powders with Yttrium Addition 周美玲1,李春国2,林志浪1,郑新和3,王群1 (1.School of Material Sciences and Engineering, Beijing Polytechnic University, Beijing... and nitrogen as gas reactants, AlN powders and composite AlN powders by in-situ synthesis method were prepared. AlN lumps prepared by the nitriding of Al-Mg and Al-Mg-Y alloys have porous microstructure......
文章编号:1004-0609(2007)11-1729-10 AlN陶瓷基板材料的典型性能及其制备技术 王 超,彭超群,王日初,余 琨,李 超 (中南大学 材料科学与工程学院,长沙 410083) 摘 要:AlN陶瓷是一种新型的基板材料,具有优异的电性能和热性能,被誉为新一代高密度封装的理想基板材料.介绍AlN陶瓷的典型性能和导热机理;讨论AlN粉末的5种合成方法:铝粉直接氮化法,Al2O3碳热还原法,化学气相沉积法,溶胶?凝胶法,自蔓延高温合成法和等离子化学合成法;分析AlN烧结助剂的选择和5种烧结工艺:热压烧结,无压烧结,放电等离子烧结,微波烧结及自蔓延烧结;阐述AlN基板的制备工艺及其影响因素. 关键词:AlN;导热机理;合成;烧结;烧结助剂;基板 中图分类号:TQ 174  ......
AlN薄膜的研究进展祝斌,宋仁国浙江工业大学机械制造与自动化教育部重点实验室摘 要:AlN是一种性能优异的宽带隙Ⅲ-Ⅴ族氮化物半导体材料,在电,光和机械领域展现了极大的应用前景.结合国内外研究的热点问题和各科研团体最新的研究成果,从AlN的性质,AlN薄膜的制备方法,国内外AlN薄膜的最新研究进展及AlN薄膜的应用等4个方向进行了详细阐述.关键词:AlN薄膜;制备方法;应用;......
[40]. This is quite different from the hydrolysis of AlN in SAD [2, 41]. At the initial stage of the reaction, the gas-solid reaction interface between AlN and O2 is large, so the degree of AlN... of AlN powder against hydrolysis using aluminum dihydrogen phosphate [J]. Journal of the European Ceramic Society, 2001, 21(10): 2075-2079. DOI: 10.1016/S0955-2219(01)00175-3. [20] DAVID E, KOPAC J......