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.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
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
关键词
粉末冶金
粉浆涂塑
耐火代型
钛合金
牙科材料
powder metallurgy\ \ slip casting\ \ refractory die\ \ expansion property
