高强度铝质瓷连接材料及工艺的研究  

Study on Joining Materials and Technology of Alumina Porcelain with High Strength

作　　者：任强[1] 何选盟[1] 朱振峰[1] 

机构地区：[1]陝西科技大学材料科学与工程学院,西安710021

出　　处：《人工晶体学报》2007年第3期675-678,共4页Journal of Synthetic Crystals

基　　金：陕西省教育厅产业化培育项目(No.06JC24)资助;陕西科技大学科研创新基金(SUST-B06)资助项目;陕西科技大学研究生创新研究基金资助

摘　　要：采用熔融-水淬法制备CaO-Al2O3-SiO2系玻璃熔块,作为高强度铝质瓷的连接材料。应用DTA、XRD及SEM等手段研究了连接材料在加热过程中的物理化学变化,以及二次烧成工艺对连接材料组成、结构和性能的影响。结果表明,合理的二次烧成工艺能够使连接层转变成为结构致密、热膨胀系数与母体材料相适应的微晶玻璃,其主晶相为直径2～3μm、长度5～10μm的β-CaSiO3微晶,连接体平均抗弯强度可达120 MPa,超过母体材料抗弯强度的85%。A kind of glass fusion cake was used as joining materials in high strength alumina porcelain in our research. The chemical compositions of such fusion cake were within CaO-MgO-Al2O3-SiO2 system and prepared by following melting-quenching routine. The chemical and physical changes of the joining material took place during heat processes and the effect of the resintering technology on composition, structure and performances of the joining material were studied by DTA, XRD and SEM. The results show that compact glass-ceramic materials can be gained with its thermal expansion coefficient adapted to the mother materials by following suitable sintering process. The main crystalline phase in glass ceramic is determined to be wollastonite which takes an irregular short column shape of around 2-3μm in diameter and 5-10μm in length. The average bending strength of joining body is up to 120 MPa, which exceeds 85 percent of the strength of mother materials.

关 键 词：高强度 铝质瓷 微晶玻璃 连接 

分 类 号：TQ171[化学工程—玻璃工业]