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| Anomalous surface analysis of tungsten infiltrated copper ablation |
| DU Fangxin1，ZHAO Fengxian2，SUN Xiaoxia3，GUO Yingli4，TANG Liangliang4，
ZHANG Baohong4 |
| （1. Wuhan City Polytechnic, Wuhan 430072, China;2. Hubei Sanjiang Aerospace Hongfeng Control Co., Ltd,
Xiaogan 432000, China; 3. China University of Labor Relations, Beijing 100048, China; 4. Advanced Technology
& Materials Co., Ltd, Beijing 100081, China） |
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Abstract Aiming at the phenomenon of abnormal ablation on the surface of W-7Cu infiltrated with tungsten and
copper, samples were taken from the rudder surface and guard plate of returned part, and the ablative characteristics,
microstructure, surface debris, fracture morphology and metallographic structure of samples were compared
and analyzed. The results showed that rudder surface’s ablation was more sever, both propellant residue on the
surfaces were distributed, the fracture apperance was dominated by transgranular and intergranular fracture, no
abnormal tissue was found; According to the results of metallographic and transmission electron microscope, the
cavity of rudder surface is more than that of the guard plate, and copper leaks exist in both areas, energy spectrum
analysis showed that the copper content has different gradients, the copper precipitation at rudder surface
was significant that affected by three kinds of working conditions including temperature, time and scour speed.
The study conclusions can provide a basis for subsequent failure analysis and quality control of tungsten-impregnated
copper gas rudder products.
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Received: 10 April 2023
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Corresponding Authors:
张保红（1972—），女，硕士，高级工程师，主要研究方向为难熔金属及其复合材料。
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2024, Vol. 34 
