摘要
使用工业级的SrCO3和ZrO2为原料,采用固相合成法在1350℃保温12h合成了SrZrO3材料,将合成的SrZrO3粉体用等静压法成型成片状并在1650℃保温不同的时间,观察其显微组织结构,测定在不同保温时间下的烧成密度。将自合成SrZrO3粉料等静压成型成SrZrO3坩埚。将SrZrO3坩埚在900℃素烧,并在1650℃保温8h烧成,在此坩埚中进行TiNi合金真空感应熔炼实验。采用XRD、SEM和EDS等观察钛合金与材料界面反应层的微观形貌。结果表明,在1350℃可以固相合成锆酸锶粉体。粉料成型后在1650℃保温8h烧结的坩埚密度达到理论值的97%以上。SrZrO3坩埚与TiNi合金的反应层厚度约为40μm,未发现坩埚材料渗透进合金熔体。
The SrO-ZrO2 complex oxide refractory was synthesized at 1350 ℃ by the solid calcination using commercial grade SrCO3 and ZrOz as the starting materials, and heat preservation time was 12 h. The SrZrO3 synthe- tic powder were compressed into tablets by cold isostati and cincubated at 1650 ℃ for different time to observe the mi- crostructure, and the density was measured at different holding time. The crucible was shaped by cold isostatic, bis- cuit firing at 900 ℃ and firing at 1650 ℃ for 8 h. The crucible was used for melting TiNi alloy by means of the vacuum induction melting. The X-ray diffraction analysis （XRD）, scanning electron microscope（SEM） and energy dispersive X-ray spectroscopy （EDS） were used to analysis the interfacial reaction between the TiNi alloy and SrZrO3 refractory. The results show that the powder of SrZrOa was synthesized at 1350 ℃ and the density of the crucible reached more than 97% of the theoretical value after sintering at 1650 ℃ for 8 h. The reaction layer thickness between SrZrO3 crucible with TiNi alloy was about 40μm, and the crucible material was not found to penetrate into the crucible alloy molt
出处
《材料导报》
EI
CAS
CSCD
北大核心
2014年第12期112-115,共4页
Materials Reports
基金
上海市科委基金(11520500100
11DZ2283400)
国家自然科学基金(51074105
51225401
51374142)
钢铁冶金新技术国家重点实验室开放课题(KF12-05)
关键词
钛合金
耐火材料
锆酸锶
坩埚
接触面
titanium alloy, refractory, strontium zirconate, crucible, contact layer
