钛合金粉浆涂塑底层冠用耐火代型材料的膨胀性能测试  

Determination of Major Expansion Properties of Refractory Die Material Compatible with Slip Casting Core of Sintered Titanium Powder

作　　者：巢永烈[1] 邝先昊[1] 廖运茂[1] 王航[1] 

机构地区：[1]华西医科大学口腔医学院

出　　处：《华西口腔医学杂志》1999年第1期72-74,共3页West China Journal of Stomatology

基　　金：国家自然科学基金

摘　　要：目的：研究钛合金粉浆涂塑底层冠用耐火代型材料的膨胀性能。方法：采用自制的钛合金粉浆涂塑底层冠用耐火代型材料（基础型），分别测定常温下的凝固膨胀率和室温至８００℃的热膨胀率。结果：２４小时最大凝固膨胀为０．３４０７％；最终凝固膨胀为０．３１１７％；平均热膨胀系数主要在８×１０－６～１１×１０－６／℃范围；反复烧结性质十分稳定；烧结后的微小收缩可用凝固膨胀和隙料来补偿。结论：该材料的主要膨胀性能可以满足钛合金粉浆涂塑底层冠的要求。Objective: To determinate major expansion preperties of refractory die material. Methods: The setting expansion ratio of refractory die material for slip casting core of sintered titanium powder at room temperature was performed, as well as thermal expansion ratio from room temperature to 800℃. Results: The maximum setting expansion ratio in 2 hours reached 0.3407%; The final setting expansion ratio in 24 hours was 0.3117%; The mean thermal expansion coefficient was mainly in range of 8×10 -6 ￣11×10 -6 /℃; The expansion property seemed very stable after sintering repeatedly and the small shrinkage after sintering could be compensated with the die spacer and setting expansion. Conclusion: The expansion properties of the refractory die material that we synthesized can fulfil the application requirements of slip casting core of sintered titanium powder.

关 键 词：粉末冶金 粉浆涂塑 耐火代型 钛合金 牙科材料 

分 类 号：R783.1[医药卫生—口腔医学]