Pt-ZrO_2的显微组织与性能影响

Effect of the Microstructure and Properties of Zirconia Strengthened Platinum Materials

氧化锆作为强化相添加到铂中能大大改善材料的力学性能和使用寿命。本文主要进行了Pt-ZrO2与纯Pt的室温和高温力学实验,通过金相、电子显微镜等手段分析了微量添加相ZrO2对材料的显微组织及性能的影响。研究结果表明:Pt-ZrO2较纯Pt的抗拉强度提高30%以上。Pt-ZrO2材料断裂行为穿晶韧性断裂。弥散强化后其力学性能及高温持久性能显著提升。

The mechanical properties and service life of the platinum materials could be greatly improved by the addition of zirconia as the strengthening phase. It was studied the properties between the Pt-ZrO2 and pure Pt at room temperature and high temperature mechanical experiment. The micro adding phase ZrO2 on Microstructure and properties had been studied by means of metallographic and scanning electron microscope analysis. The results show that the tensile strength of Pt-ZrO2 is increased by 30% compared with the pure Pt. The fracture behavior of the Pt-ZrO2 material was the ductile fracture. The zirconia dispersionstrengthened platinum have long life times and excellent high temperature properties.