A focused review of the hydrogen storage tank embrittlement mechanism process

Hydrogen embrittlement is a widely known phenomenon in high-strength and storage materials. Hydrogen embrittlement is responsible for subcritical crack growth in material, fracture initiation, subsequent loss in mechanical properties, and catastrophic failure. Hydrogen is induced in the material during an electrochemical reaction between the hydrogen, storage materials, and high-pressure gaseous hydrogen environment. Various mechanisms which are responsible for crack development, growth, and fracture have been deliberated and reported. However, the fundamental mechanism of hydrogen embrittlement remains unclear. Several techniques such as linearly increasing stress test techniques (LIST), constant extension rate test (CERT) and slow strain rate testing (SSRT), thermal desorption spectroscopy (TDS), permeation testing (PT), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) have been utilized to determine the amount of hydrogen diffused and available in the hydrogen storage material. The review intends to categorize and provide a clear understanding of the degradation mechanism that occurs during hydrogen embrittlement. The improvement in mitigating the hydrogen embrittlement degradation as a function of modifying the structure and surfaces of the material is established. Prospects for addressing hydrogen embrittlement degradation through further experimental and numerical research are suggested. Lastly, this paper through recommendation endeavors to prevent hydrogen storage tank degradation and reduces high costs associated with the replacement of the component in renewable energy applications.     

反应合成喷涂装置的设计

电弧喷涂是一种重要的热喷涂技术,应用这种技术改变压缩气体的成分进行铝喷涂时,可以获得Al2O3纳米粉体材料.该装置正是为了配合这一试验研究,收集试验中产生的纳米粉体材料而设计的.该装置通过负压抽吸的方法,使产生的纳米粉体吸附在过滤膜上而得到Al2O3纳米粉体材料.通过该装置可以达到试验目的,收集到合格的Al2O3纳米粉体材料.     

零件的焊补与热喷涂修复技术

焊补与电弧喷涂是常用的表面修复技术,焊补可以利用焊材与母材的熔合进行较大表面缺陷的修复,电弧喷涂则利用制备特殊的表面涂层进行一定尺寸磨损表面的修复.两者结合起来修复零件不仅可以取得更好的零件修复效果,还具有较好的经济性.以履带式拖拉机主传动轴的修复为例,详细说明了应用焊补和热喷涂相结合的方法对其进行修复的工艺过程.     

基于MSP430的油罐运输车罐体安全监测系统设计

为实现油品罐车运输过程中罐体安全的高精度实时监测,提出了一种基于MSP430的罐体安全监测系统的设计方案;系统在拓扑结构上分为罐体子系统和驾驶室子系统;罐体子系统基于数字传感器PY206-485对罐体压力、温度等参数进行实时测量,通过无线数据传输方式将参数高速传递给驾驶室子系统进而显示给用户,并在参数超过设定阈值时进行声光报警;试用结果表明,系统稳定可靠,能及时准确地发现罐体异常、有效降低罐车运输过程中的安全隐患,实用价值较高、应用前景较好。     

电弧喷涂制备纳米粉体的试验研究

随着纳米材料技术的不断发展,纳米材料的制备技术已成为研究的重要领域.为了研究新的纳米陶瓷粉体(Al2O3)制造技术,在对电弧喷涂技术进行相关试验后,提出了改变电弧喷涂雾化气体成分,利用电弧喷涂原位反应合成技术,成功地制备了Al2O3纳米粉体材料.试验研究表明:在电弧喷涂雾化气体中加入纯氧气成分后,经高温电弧热熔化、雾化的铝金属粒子与氧气能够产生强烈的氧化反应,可以制备出Al2O3纳米粉体材料.