航天推进技术研究院主办
[1]潘兆义,蔡 刚,马双民,等.硅化物涂层对铌钨合金的热防护行为研究[J].火箭推进,2015,41(03):59-65.
PAN Zhao-yi,CAI Gang,MA Shuang-min,et al.Research on thermal protection behavior of silicide coating on Nb-W alloys used at high temperature[J].Journal of Rocket Propulsion,2015,41(03):59-65.
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PAN Zhao-yi,CAI Gang,MA Shuang-min,et al.Research on thermal protection behavior of silicide coating on Nb-W alloys used at high temperature[J].Journal of Rocket Propulsion,2015,41(03):59-65.
硅化物涂层对铌钨合金的热防护行为研究
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
41
期数:
2015年03期
页码:
59-65
栏目:
工艺与材料
出版日期:
2015-06-30
- Title:
- Research on thermal protection behavior of silicide coating on Nb-W alloys used at high temperature
- 分类号:
- V252-34
- 文献标志码:
- A
- 摘要:
- 钨合金作为轨姿控液体火箭发动机推力室身部的主要结构材料，在工作环境中易发生氧化粉化，必须在合金表面涂覆高温抗氧化涂层。利用涂覆及真空烧结复合工艺在铌钨合金表面制备高温抗氧化涂层，研究硅化物涂层对铌钨合金的热防护行为，包括涂层成型过程、高温抗氧化行为、高温抗热震行为及试车热冲刷行为等，试验结果为：涂层在1 700 ℃下的氧化寿命为11±0.78 h，1 800 ℃下的氧化寿命为5±0.46 h，1 650 ℃~室温的水冷热震循环次数为124±9次，1 600~800 ℃下的空冷热震循环次数为3410±124次，并且在热试车考核中涂层通过了长程10 000 s的考核，分析硅化物涂层的性能和失效机制，总结了硅化物涂层的热防护机理，研究的新型硅化物涂层在高温条件下具有较好的性能。
- Abstract:
- The Nb-W alloy is an important structured material used for thrust chamber of orbit-attitude control liquid rocket engine. However, it is easy to be oxidized terribly in the oxygen environment, so the anti-oxidation coating must be used to overcome its weakness. Therefore, with method of spraying and vacuum sintering, a silicide coating was prepared on Nb-W alloy to make thermal protection at high temperature. In this paper, the formation of silicide coating, oxidation resistance, thermal shock resistance and anti-ablation were studied to make sure the properties and failure mechanism of silicide coating. The test results indicate that the oxidation time of coating is 11±0.78 h at 1700℃ and 5±0.46 h at 1 800℃; the thermal shocking cycles are 124±9 at 1 600 ℃ to ambient temperature in water; and the thermal shocking cycles are 3410±124 at 1 600～800 ℃ in air. The study results show that the alloy, which have important influence on the research of the new anti-oxidation coatings.
参考文献/References:
[1]蔡国飙, 李家文, 田爱梅, 等. 液体火箭发动机设计[M]. 北京: 北京航空航天出版社, 2011.
[2]肖来荣, 许谅亮, 易丹青. 铌钨合金表面硅化物涂层热震行为研究[J]. 稀有金属, 2008, 32(3): 257-262.
[3]肖来荣, 许谅亮, 易丹青, 等. 复合包渗法制备铌钨合金表面硅化物涂层[J]. 航空材料学报, 2007, 27(4): 36-41.
[4]FEI X, NIU Y, JI H, et al. Oxidation behavior of Al2O3 reinforced MoSi2 composite coatings fabricated by vacuum plasma spraying[J]. Ceramics Int- ernational, 2010 (36): 2235-2239.
[5]CABOURO G, LE GALLET S, CHEVALIER S, et al. Dense Mosi2 produced by reactive flash sintering: Control of Mo/Si agglomerates prepared by high-energy ball milling[J]. Powder Technology, 2011 ( 208): 526-531.
[6] 陈道勇, 贾中华. MoSi2 涂层高温抗氧化性能和微观组织[J]. 宇航材料工艺, 2012 (1): 100-104.
相似文献/References:
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备注/Memo
收稿日期：2015-01-16；修回日期：2015-04-25 基金项目：航天科技集团公司工艺振兴计划二期重大工艺专项研究项目（ZDGY2014-28) 作者简介：潘兆义（1984—），男，博士，研究领域为热防护涂层设计与研发
更新日期/Last Update:
1900-01-01