大同黑砂岩合成β-SiAlON材料的工艺参数的研究  

Effect of process elements doing on synthesis of β-SiAlON from Datong sandstone

作　　者：程科[1] 徐利华[1] 王体壮 徐斌[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《云南大学学报（自然科学版）》2005年第S3期468-472,共5页Journal of Yunnan University(Natural Sciences Edition)

基　　金：教育部科学技术研究重点项目资助(03020);国家自然科学基金资助(50332010;50172008)

摘　　要：选择大同黑砂岩这种大宗廉价矿产资源作为主原料,采用碳热还原氮化制备工艺,设计和制备低成本高性能及环境友好β-SiAlON材料,并对烧成过程中各种工艺参数如烧结温度、N2流量、保温时间和配碳量等对制备β-SiAlON材料的影响进行了研究.实验采用正交试验的方法来研究各种工艺参数的影响.结果表明,烧结过程中,N2流量和烧结温度对材料制备的影响最大,保温时间和配碳量次之.最后在最佳工艺参数条件下制得质量分数达97%的β-SiAlON.Sandstone from Datong is adopted to manufacture β-SiAlON material,which is inexpensive,high-performance and environmental protective.β-SiAlON material is manufactured by carbo-thermal reduction and nitridation(CRN).In the process of fabricating β-SiAlON, the effect of several primary process elements such as temperature schedule,sintering atmosphere,feed proportioning were studied by orthogonal tests.According to the results,the flow rate of N_2 and sintering atmosphere is the determinate element,the time of heat preservation and feed proportioning of carbon black is the secondary element.And product,which contain 97% β-SiAlON, is manufactured by the condition of the best process elements.

关 键 词：大同黑砂岩 Β-SIALON 碳热还原氮化 工艺参数 

分 类 号：TB321[一般工业技术—材料科学与工程]