摘要
MgO/AlN复相材料具有良好的抗侵蚀性和热震稳定性,在钢铁工业中具有良好的应用前景。介绍采用纯铝定向金属氮化工艺过程中热力学模拟计算对实验装置设计的指导,概括在氮化过程中镁蒸气的传质行为和铝熔体的气液固传输机理,总结了各种工艺参数如外掺剂镁粉、处理温度、保温时间、合金硅元素和预形体材质等对MgO/AlN复相材料渗透氮化和显微结构的影响,指出制备致密的MgO/AlN复相材料是今后研究的重点。
MgO/AlN composite is promising in the metallurgical industry with its excellent erosion re sistance and thermal shock resistance. This paper introduces the guidance of thermodynamic simulation for the experimental apparatus design under directed metal nitridation process. The mass transfer behavior of gaseous Mg and the gas-liquid-solid transportation mechanism are given. Furthermore the influence of processing parameters such as external dopant Mg content, processing temperature and time, alloy silicon and preform materials on the penetration, nitridation and microstructure is summa- rized. Finally, the future research emphasis on the dense MgO/A1N composite is pointed out.
出处
《武汉科技大学学报》
CAS
2008年第3期229-232,共4页
Journal of Wuhan University of Science and Technology
基金
国家自然科学基金资助项目(50572076)
高等学校博士学科点专项科研基金项目(20040488001)
