摘要
利用真空电弧离子沉积技术在钽钨合金表面沉积均匀致密的铱涂层,研究了钽钨合金/铱涂层的抗高温氧化性能和热震性能。结果表明:在800℃和1 100℃条件下,铱涂层可以有效保护钽钨合金,经过20 h后,铱涂层表面只发生轻微氧化,其表面形成褐色氧化铱产物;在1 900℃条件下,抗氧化寿命达10 h以上;在室温至(1 900±50)℃热震条件下,其寿命可达到1 000次以上。
The even and compact Ir coating was deposited on Ta-10W alloy substrate by arc ion plating.The oxidation resistance and thermal shock resistance of Ir coating at high temperture was studied.Results show that the Ir coating can keep protecting Ta-10W alloy substrateat at 800%and 1100℃.The light oxidation occurs and bowrn oxides appear on surface after 20h.At 1900℃,the oxidation resistance of life reachs 10 hours and above.Under temperature change from room temperature to (1900±50)℃,the times of the thermal shock is 1000 over cycles.
作者
李海庆
闫旭波
徐方涛
陈道勇
张绪虎
LI Haiqing;YAN Xubo;XU Fangtao;CHEN Daoyong;ZHANG Xuhu(Aerospace Research Institute of Materials &Processing Technology,Beijing 100076)
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2018年第6期40-44,共5页
Aerospace Materials & Technology
关键词
铱涂层
钽钨合金
真空电弧离子沉积
高温氧化
热震
Iridium coating
Ta-10W alloy
Arc ion plating
High temperature oxidation
Thermal shock
