Manufacturing of sintered aluminum powder wicks by the liquid phase enhance sintering method for aluminum heat pipes

被引:1
作者
Liu, Xiaolong [1 ]
Li, Xin [1 ]
Meng, Xin [1 ]
Liu, Yucheng [1 ]
Tang, Yong [1 ,2 ]
Zhang, Shiwei [1 ]
机构
[1] South China Univ Technol, Sch Mech & Automot Engn, Guangzhou 510641, Peoples R China
[2] Shenzhen Univ, Coll Mechatron & Control Engn, Shenzhen 518000, Peoples R China
基金
中国国家自然科学基金;
关键词
PERFORMANCE; DIFFUSION;
D O I
10.1063/5.0240479
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
The aluminum heat pipes have the advantages of lightweight and low-cost, which are widely applied to space satellites. The wick is the critical component of the heat pipe which provides the capillary pressure. Unfortunately, the performance of the aluminum heat pipes is limited by the wicks, which are difficult to manufacture due to the barriers of Al2O3 thin film during the aluminum powder wicks' sintering process. To overcome this problem, a novel sintered aluminum powder wick manufactured by the liquid phase enhance sintering (LPES) technology based on element doping and vacuum sintering was proposed in this work. Considering the material compatibility between the aluminum and working fluid, the brazing powder rich in Si was chosen to be doped to promote the formation of sintered necks. The mechanism of the LPES promoted by the Si was analyzed by thermodynamic and element distribution analysis. The wick is lightweight whose density is only 22.60% and 74.26% of the densities of copper and aluminum. The wettability and capillary performance of the wicks were also studied. The results show that all the samples are superhydrophilic with the working fluids of ethanol and acetone. The sample of CS15 (coarse pure aluminum powder with 15 wt. % brazing powder) has the best wettability and capillary performance in acetone, whose infiltration time, capillary rise height, and wicking coefficient are about 69.50 ms, 106.39 mm, and 12.35 mm/s(0.5), respectively. The work provides a feasible approach to manufacturing lightweight and low-cost sintered powder wicks for aluminum heat pipes.
引用
收藏
页数:12
相关论文
共 40 条
[1]   A novel method for manufacturing sintered aluminium heat pipes (SAHP) [J].
Ameli, M. ;
Agnew, B. ;
Leung, P. S. ;
Ng, B. ;
Sutcliffe, C. J. ;
Singh, J. ;
McGlen, R. .
APPLIED THERMAL ENGINEERING, 2013, 52 (02) :498-504
[2]  
[Anonymous], 2019, Materials Characterization, DOI DOI 10.31399/ASM.HB.V10.9781627082136
[3]  
Brandes E.A., 2013, Smithells Metals Reference Book, Vseventh, P1, DOI [10.1016/C2009-0-25363-3, DOI 10.1016/C2009-0-25363-3]
[4]   Wettability of porous surfaces. [J].
Cassie, ABD ;
Baxter, S .
TRANSACTIONS OF THE FARADAY SOCIETY, 1944, 40 :0546-0550
[5]   3D printed aluminum flat heat pipes with micro grooves for efficient thermal management of high power LEDs [J].
Chang, Chao ;
Han, Zhaoyang ;
He, Xiaoyu ;
Wang, Zongyu ;
Ji, Yulong .
SCIENTIFIC REPORTS, 2021, 11 (01)
[6]   Rayleigh-Benard-Marangoni convection characteristics during mass transfer between liquid layers [J].
Chen Jun ;
Shen Chao-Qun ;
Wang He ;
Zhang Cheng-Bin .
ACTA PHYSICA SINICA, 2019, 68 (07)
[7]   Recent advances in the optimization of evaporator wicks of vapor chambers: From mechanism to fabrication technologies [J].
Cheng, Xin ;
Yang, Guang ;
Wu, Jingyi .
APPLIED THERMAL ENGINEERING, 2021, 188
[8]   A particle morphology characterization system and its method based on particle scattering image recognition [J].
Ding, Xinrui ;
Liu, Xin ;
Shao, Changkun ;
Chen, Bowen ;
Li, Weihong ;
Li, Zongtao .
OPTICS AND LASERS IN ENGINEERING, 2023, 163
[9]   Influence of Al2O3 nano-dispersions on microstructure features and mechanical properties of cast and T6 heat-treated Al Si hypoeutectic Alloys [J].
El-Mahallawi, I. ;
Abdelkader, H. ;
Yousef, L. ;
Amer, A. ;
Mayer, J. ;
Schwedt, A. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 556 :76-87
[10]   CORRELATION BETWEEN FREQUENCY FACTOR AND ACTIVATION-ENERGY FOR DIFFUSION IN ALUMINUM [J].
FRICKE, WG .
SCRIPTA METALLURGICA, 1972, 6 (12) :1139-1144