注射成型制备碳化硅陶瓷材料  

Research on Ceramic Injection Molding of Silicon Carbide

作　　者：张勇[1] 何新波[1] 曲选辉[1] 赵珍[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：《稀有金属材料与工程》2007年第A01期326-329,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金项目(50404012)

摘　　要：以高纯SiC微粉为原料,添加碳化硼、碳为烧结助剂,研究了利用注射成型技术生产碳化硅陶瓷复杂件的工艺。选择了一种石蜡基多聚物粘结剂体系,在粉体体积分数为52%时,喂料的最佳注射参数是:注射温度160-170℃,注射压力为100～110MPa,采用溶剂脱脂加上热脱脂的二步法脱脂工艺,在氩气氛下,将烧结坯体于2100℃,保温1h进行固相烧结后,得到的碳化硅陶瓷复杂件密度为3.08g/cm3,致密度为96%。Silicon carbide ceramic parts with complex shape were fabricated by ceramic injection molding process, using powder SiC as raw material, BC4, C and a wax-based polymer as binders. When the powder loading was 52% （volume fraction）, the optimal injection parameters were; injection temperature 160-170 ℃, injection pressure 100-100 MPa. Two steps of solvent debinding and thermal debinding was set up to decompose the binder. After being sintered under argon atmosphere for 1 h at 2100 ℃, silicon carbide ceramics with density of 3.08 g/cm^3 and relative density of 96% could be produced.

关 键 词：碳化硅 陶瓷注射成型 脱脂 烧结 

分 类 号：TQ174.75[化学工程—陶瓷工业]