| 安东阳,刘晨飞,赵爽,张海鹏,邹永纯,唐增武,萧鹏,戴景民,王亚明.Nb-Hf 合金表面Si-Ti-Cr硅化物涂层在恒温氧化和热震中的高温抗氧化性能[J].稀有金属材料与工程,2023,52(4):1219~1226.[An Dongyang,Liu Chenfei,Zhao Shuang,Zhang Haipeng,Zou Yongchun,Tang Zengwu,Xiao Peng,Dai Jingmin,Wang Yaming.High-Temperature Oxidation Resistance Performance of Si-Ti-Cr Silicide Coating on Nb-Hf Alloy Surface in Constant Oxidation and Thermal Shock[J].Rare Metal Materials and Engineering,2023,52(4):1219~1226.] |
| Nb-Hf 合金表面Si-Ti-Cr硅化物涂层在恒温氧化和热震中的高温抗氧化性能 |
| 投稿时间：2022-09-04 修订日期：2022-11-28 |
| 中文关键词: 硅化物涂层 抗氧化 热震性能 恒温氧化 高温 |
| 基金项目:National Defense Technical Basic Research Program of China (No. JSZL 2015603 B 002), the Aviation Science Fund Project (No. 20172777007), the National Natural Science Foundation of China (52206225) |
| 中文摘要: |
| 为了提高Nb-Hf 合金的高温抗氧化性能，采用浆料烧结和高温渗透制备了Si-Ti-Cr硅化物涂层。分析了Si-Ti-Cr 硅化物包覆的Nb-Hf 合金样品在恒温氧化和高温热震条件下的抗氧化性能，揭示了Si-Ti-Cr 涂层高温恒温氧化和高温热震条件下的失效机理。结果表明，在1800 ℃恒温氧化5 h条件下，涂层的增重为7 mg/cm2；在1700 ℃热震循环50周次和恒温氧化5 h条件下，涂层的最大增重为1.8 mg/cm2。硅化物涂层在1800 ℃恒温氧化环境下和1700 ℃热震/恒温氧化环境下具有优异的抗氧化性能。 |
| High-Temperature Oxidation Resistance Performance of Si-Ti-Cr Silicide Coating on Nb-Hf Alloy Surface in Constant Oxidation and Thermal Shock |
| 英文关键词:silicide coating oxidation resistance thermal shock resistance constant oxidation high temperature |
| 英文摘要: |
| To improve the high-temperature oxidation resistance performance of Nb-Hf alloys, Si-Ti-Cr silicide coatings were prepared on Nb-Hf alloy by slurry sintering and high-temperature permeation methods. The high-temperature oxidation resistance performance of Si-Ti-Cr silicide coating on Nb-Hf alloys in high-temperature constant oxidation and high-temperature thermal shock was analyzed, and the failure mechanism of Si-Ti-Cr coating in high-temperature constant oxidation and high-temperature thermal shock was determined. The results show that the mass gain of the coating is 7 mg/cm2 after constant oxidation at 1800 °C for 5 h. The mass gain of the coating in atmosphere is less than 1.8 mg/cm2 after thermal shock cycles for 50 cycles followed by constant oxidation at 1700 °C for 5 h. Therefore, the silicide coating exhibits excellent oxidation resistance at 1800 °C in constant oxidation and at 1700 °C in thermal shock/constant oxidation. |
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