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相关概念视频

Corrosion02:49

Corrosion

The degradation of metals due to natural electrochemical processes is known as corrosion. Rust formation on iron, tarnishing of silver, and the blue-green patina that develops on copper are examples of corrosion. Corrosion involves the oxidation of metals. Sometimes it is protective, such as the oxidation of copper or aluminum, wherein a protective layer of metal oxide or its derivatives forms on the surface, protecting the underlying metal from further oxidation. In other cases, corrosion is...
Mechanisms of Heat Transfer I01:14

Mechanisms of Heat Transfer I

Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
Corrosion of Reinforcement01:27

Corrosion of Reinforcement

The corrosion of steel reinforcement within concrete is a process influenced by the material's inherent properties and external factors. The high pH level of around 13, provided by calcium hydroxide present in concrete, initially protects the steel reinforcement by promoting the formation of a passive iron oxide layer on its surface.
However, over time and under certain conditions like carbonation, chloride ingress, and cracking this protective state can be compromised. Steel has areas with...
Steel Manufacturing01:26

Steel Manufacturing

Steel manufacturing is a multi-stage process that begins by smelting iron ore into cast iron in a blast furnace. This initial stage involves layering iron ore with coke, a type of fuel, and crushed limestone within the furnace. The coke is ignited with a high volume of air, leading to the creation of carbon monoxide, which acts to reduce the iron ore to pure iron.
During this smelting process, limestone plays a crucial role by forming slag. Slag captures impurities within the molten iron, such...
Steel Fastening Techniques01:17

Steel Fastening Techniques

Steel sections can be joined together through various fastening techniques including riveting, bolting, and welding, each suitable for different structural requirements and conditions.
Rivets are cylindrical steel fasteners with a specially designed head. During application, rivets are heated until white-hot and then inserted through pre-drilled holes in the steel sections. A pneumatic hammer is used to shape the exposed end into a second head, securing the sections together.
Bolting is another...

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对于耐热钢的扩散化物涂层

Khrystyna Berladir1,2, Tetiana Hovorun1, Vitalii Ivanov2,3

  • 1Department of Applied Materials Science and Technology of Structural Materials, Faculty of Technical Systems and Energy Efficient Technologies, Sumy State University, 2, Rymskogo-Korsakova St., 40007 Sumy, Ukraine.

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概括

离子化和胺粉化增强了AISI A290C1M钢的性能. 这些方法显著提高了硬度和耐磨性,同时减少了加工时间和成本.

关键词:
这是一个AISI A290C1M.耐热钢的耐热钢是工业增长 工业增长 工业增长离子化离子化氨酸是什么意思? 氨酸是什么意思?微硬度 微硬度 微硬度在粉末混合物中化.过程创新创新的过程创新.耐磨性 耐磨性 耐磨性 耐磨性

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科学领域:

  • 材料科学 材料科学 材料科学
  • 表面工程是什么?表面工程是什么?
  • 金工业是金工业的一个方面.

背景情况:

  • AISI A290C1M钢是各种工业应用中的关键材料.
  • 传统的化方法可能耗时且复杂.
  • 提高钢的表面性能对于提高性能和耐用性至关重要.

研究的目的:

  • 研究离子化和胺基粉末混合化对AISI A290C1M钢的作用.
  • 将这些新化技术的效率和结果与传统方法进行比较.
  • 优化化工艺,以改善结构和物业增强.

主要方法:

  • 离子化工艺应用于AISI A290C1M钢.
  • 使用粉末混合物 (95%的胺+5%的化) 来化AISI A290C1M钢.
  • 对处理过的钢样品的微观结构,扩散层深度,硬度和耐磨性进行分析.

主要成果:

  • 离子化减少了5-6倍的加工时间,产生0.25-0.32毫米的扩散层深度和硬度高达1000HV.
  • 胺粉化简化了该过程,节省了能源,并达到970HV的硬度.
  • 这两种方法都显著提高了耐磨性,对于离子化是2.17倍,对于粉末混合化是2.6倍,而后者显示的磨损最小.

结论:

  • 离子化和胺粉化是增强AISI A290C1M钢的有效和高效方法.
  • 基于胺的粉末化提供了一种简化,具有成本效益的替代方案,可显著改善耐磨性.
  • 加快的化速度归因于从胺和同时纳米粒子分解中获得的更高的原子的可用性.