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| PtRhMoReCr高温电阻应变合金性能研究 |
| Study on Properties of PtRhMoReCr High Temperature Resistance Strain Alloys |
| 投稿时间：2019-03-19 |
| DOI： |
| 中文关键词: 金属材料 PtRhMoReCr 高温电阻应变合金 电阻-温度特性 抗氧化性 |
| 英文关键词: metal materials PtRhMoReCr high temperature resistance strain alloy resistance- temperature relationship oxidation resistance |
| 基金项目:云南省应用基础研究重大项目(2016FC006)、昆明市科技创新重大项目(2015-2-R-01367)、上海市空间飞行器机构重点实验室资助项目 |
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| 中文摘要: |
| 研究了PtRhMoReCr高温电阻应变合金铸态组织、退火组织、电阻-温度特性、抗氧化性及物理性能。结果表明，高频感应熔炼时，采用特殊冷却结晶器制备的合金铸锭可以避免出现穿晶组织，得到易于加工的等轴、细小的柱状晶；PtRhMoReCr合金1200℃的氧化增重量较低，高温抗氧化性能优于其他同类型合金；合金具有较高的电阻率和抗拉强度等综合性能；在0~1000℃温度区间，合金的电阻-温度保持线性关系，PtRhMoReCr合金可将材料测温范围从0~900℃拓宽到0~1000℃。 |
| 英文摘要: |
| The cast structure, annealing structure, resistance-temperature relationship, oxidation resistance and physical properties of the PtRhMoReCr high temperature resistance strain alloys were studied. The results showed that the alloy ingot prepared by a special solidification method could avoid the occurrence of trans granular structure during high-frequency induction melting and had easy-to-machine equiaxed and fine columnar crystals. The PtRhMoReCr alloy had low oxidation weight gain at 1200℃, and its high temperature oxidation resistance was better than other similar alloys. The alloy also had high resistivity and tensile strength. The resistance-temperature linear range of the alloy increased from 0~900℃ to 0~1000℃. |
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