常用双极板焊接工艺及其接头组织性能对比研究

doi:10.3976/j.issn.1002-4026.20240021

Abstract

Abstract:

In order to study the welding methods suitable for metal bipolar plates, 0.1 mm 316L stainless steel was welded by four common bipolar plate welding methods : laser welding, vacuum diffusion welding, brazing and ultrasonic welding.The potentiodynamic polarization curves of four kinds of welded joints were measured by using CHI-604E electrochemical workstation. The electrochemical corrosion properties of four kinds of welded joints were compared, and the electrochemical corrosion behavior was analyzed by combining microstructure and chemical composition.It is found that the corrosion resistance of vacuum diffusion welded joints and laser welded joints is strong, and the corrosion resistance of ultrasonic welded joints and brazed joints is weak.The post-weld deformation of four kinds of welded specimens was measured by laser spectral confocal microscope. Under the action of fixture, the deformation of laser welded specimens was smaller than that of other specimens.The welding time and welding process used in the welding process of the four welding methods were compared.After comprehensive comparison, laser welding is finally determined as the best choice for these four common metal bipolar plate welding methods.

Key words: laser welding, brazing, vacuum diffusion welding, ultrasonic welding, 316L stainless steel, galvanic corrosion, post-weld deformation

CLC Number:

TN249

HOU Dongxu, YIN Ziqiang, REN Yuan, MA Xinqiang, CHENG Wei. Comparative study on the common bipolar plate welding processes and their joint microstructures and performance[J].Shandong Science, 2024, 37(6): 67-74.

Figures/Tables 11

Table 1

Fig.1

Fig.2

Table 2

Table 3

Electrolyte composition"

c(F^-)	c(Ca²⁺)	c(Na⁺)	c(Br^-)	c(Cl^-)	c(S $O 4 2 -$ )
5.7×10^-4	1.26×10^-5	2.1×10^-5	8.1×10^-5	2.7×10^-6	1.3×10^-6

Table 3

Fig.3

Table 4

Fig.4

Fig.5

Table 5

Fig.6

References 12

[1]	ZHAO X, ZHANG Y Y, WANG X B. Research on testing and evaluation technology of proton exchange membrane for fuel cell[J]. Energy Reports, 2023, 10: 1943-1950. DOI: 10.1016/j.egyr.2023.08.063.
[2]	李政贤, 耿志勇, 李一凡, 等. 质子交换膜燃料电池关键材料发展现状综述[J]. 商用汽车, 2023(4): 93-95. DOI: 10.20042/j.cnki.1009-4903.2023.04.010.
[3]	翟长峰. 燃料电池不锈钢模压薄型双极板真空钎焊技术研究[D]. 大连: 大连交通大学, 2008.
[4]	PENG L F, XU Z T, LAI X M. An investigation of electrical-assisted solid-state welding/bonding process for thin metallic sheets: experiments and modeling[J]. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2014, 228(4): 582-594. DOI: 10.1177/0954405413506193.
[5]	胡唯. 燃料电池金属双极板激光胶焊接头性能优化与焊接变形控制[D]. 上海: 上海交通大学, 2013.
[6]	肖朝阳. 燃料电池不锈钢超薄双极板的激光叠焊工艺研究[D]. 岳阳: 湖南理工学院, 2021.
[7]	翟长峰, 史春元, 徐洪峰. 不锈钢双极板钎焊接头电化学腐蚀行为的研究[J]. 焊接, 2009(3): 47-49. DOI: 10.3969/j.issn.1001-1382.2009.03.010.
[8]	FUJII H T, SRIRAMAN M R, BABU S S. Quantitative evaluation of bulk and interface microstructures in Al-3003 alloy builds made by very high power ultrasonic additive manufacturing[J]. Metallurgical and Materials Transactions A, 2011, 42(13): 4045-4055. DOI: 10.1007/s11661-011-0805-x.
[9]	范霁康, 张建, 徐鸿林, 等. 316L不锈钢超薄板激光焊接头微观组织及力学性能研究[J]. 热加工工艺, 2023, 52(5): 124-126. DOI: 10.14158/j.cnki.1001-3814.20210243.
[10]	经敬楠, 于治水, 苌文龙, 等. BNi7镍基钎料真空钎焊316L不锈钢接头钎缝的显微组织和显微硬度[J]. 机械工程材料, 2013, 37(1): 10-13.
[11]	闻龙. 316L不锈钢激光焊接接头耐腐蚀性能研究[D]. 长春: 长春理工大学, 2017.
[12]	XU H, GUO X Y, LEI Y P, et al. Welding deformation of ultra-thin 316 stainless steel plate using pulsed laser welding process[J]. Optics & Laser Technology, 2019, 119: 105583. DOI: 10.1016/j.optlastec.2019.105583.

焊接方式	焊接温度/℃	焊接时间/min	压力/MPa
钎焊	20~900	70	0
	900	10	0
	900~1 170	10	0
	1 170	10	0
	1 170~200	194	0
真空扩散焊	20~800	78	6
	800	10	6
	800~950	15	6
	950	60	6
	950~200	150	6
超声波焊接	25	0.02	0.3
激光焊接	25	0.008	0

焊接接头	自腐蚀电位/V	自腐蚀电流密度/(μA·cm^-2)	工作电位下腐蚀电流密度/(μA·cm^-2)
钎焊接头	-0.523	29.48	41.2
超声波焊接头	-0.517	19.42	37.9
激光焊接头	-0.482	18.49	28.3
真空扩散焊接头	-0.476	17.88	20.1

焊接试样	w(Cr)	w(Ni)	w(C)	w(Mn)	w(O)
钎焊试样	39.4	34.5	20.2	3.2	2.6
激光焊试样	46.9	25.6	19.8	4.9	2.8
真空扩散焊试样	49.9	29.5	15.3	2.8	2.5
超声波试样	43.5	24.5	19.9	3.3	8.8

Comparative study on the common bipolar plate welding processes and their joint microstructures and performance

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 11

References 12

Related Articles 3

Metrics

Comments

Recommended 0

[1]	GAO Qiuling, CHENG Wei, LI Wenlong, GE Hailong, HOU Xingqiang, SONG Ruhui, WEI Jiajie, JIA Tianshuo, CAI Xinyan. Centerline extraction algorithm of structured light streak in a complex background [J]. Shandong Science, 2024, 37(2): 65-73.
[2]	ZHAO Li, WANG Xiao-Zheng, QI Yong, FU Xiao, CAO Nai-Feng, CHEN Shi-Zhe. Design of multi reflection transmission method based visibility measurement system [J]. Shandong Science, 2011, 24(6): 67-70.
[3]	CHENG Guang-Xin. Development of Laser Interferometric Nano-barometer [J]. J4, 2010, 23(5): 93-95.