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| 压力和温度对铱铑合金热等静压致密化的影响 |
| Effect of Pressure and Temperature on Hot Isostatic Pressure Densification of Iridium-Rhodium Alloy |
| 投稿时间：2019-09-26 |
| DOI： |
| 中文关键词: 金属材料 Ir-20Rh合金 热等静压 孔隙 维氏硬度 致密度 |
| 英文关键词: metal materials Ir-20Rh alloys hot isostatic pressure porosity Vickers hardness densification |
| 基金项目:云南省应用基础重点项目(2016FA053)、云南省重大科技新材料专项(2018ZE001)、云南稀贵金属材料金工程(一期) (2018ZE006) |
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| 中文摘要: |
| 纯铱具有较大的致密度，将铑粉与铱粉合金化可以增强铱的高温抗氧化性能。设计了5组热等静压工艺参数制备Ir-20Rh合金。通过观察热等静压后样品的金相显微组织，测量合金的硬度、计算孔隙率以及致密度，研究压力和温度条件对铱铑合金热等静压致密化的影响。结果表明，随着压力和温度的升高，Ir-20Rh合金的致密度都会有所增加，且温度对Ir-20Rh合金致密度的影响幅度大于压力对Ir-20Rh合金致密度的影响。最佳热等静压工艺参数为在1300℃、140 MPa保温2 h。 |
| 英文摘要: |
| Pure iridium has a large density, and alloying rhodium powder with iridium powder can enhance the high temperature oxidation resistance of iridium. Preparation of 5 sets of hot isostatic pressure process parameters to prepare Ir-20Rh alloy. By observing the metallographic microstructure, measuring the hardness, calculating the porosity and density of the sample after hot isostatic pressing, study on the effect of pressure and temperature conditions on the hot isostatic compaction of Iridium-Rhodium alloy. The results show that the density of Ir-20Rh alloy increases with the increase of pressure and temperature, and the effect of temperature on the density of Ir-20Rh alloy is greater than the effect of pressure on the density of Ir-20Rh alloy. The best hot isostatic pressing process parameters are 1300℃ and 140 MPa, holding for 2 h. |
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