碳含量对-碳钢异构结构的影响 界面元素扩散和化学反应
Sheng Zeng1, Guoqiang You1,2,3, Ruimin Huang1
1College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China.
Langmuir : the ACS journal of surfaces and colloids
|February 2, 2026
概括
这项研究表明,碳 (C) 在钢结合过程中在接口上优先扩散并形成碳化 (TiC). 这种TiC层的增长受到温度和钢铁的影响.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是金工业的一个方面.
- 表面工程是什么?表面工程是什么?
背景情况:
- (Ti) 和钢的固态结合存在挑战,因为其物理化学性能不同.
- 钢中的碳 (C) 对Ti-钢结合过程中的扩散和界面反应的影响尚未完全理解.
研究的目的:
- 分析具有不同碳含量的Ti-钢扩散结合对的界面形态,扩散和反应行为.
- 研究温度和碳度对界面层的形成和生长的影响.
主要方法:
- 商业纯 (TA2) 与不同碳含量 (20#,45#,85#) 的钢在710,870和960°C的温度下进行扩散结合.
- 使用先进的表征技术分析界面形态,元素扩散 (Ti,Fe,C) 和反应产物.
主要成果:
- 一个连续的,富含碳 (TiC) 层在Ti侧形成,与纳米到亚微米的TiC粒.
- 随着结合温度的提高和钢中的碳含量增加,TiC层的厚度增加,超过2.5微米.
- 碳原子的扩散速度比铁更快,导致偏好的TiC形成,并抑制Ti-Fe金属间形成. 铁分布在TiC谷物边界上.
结论:
- 碳扩散和TiC形成是Ti-钢接口的主要反应.
- 这些发现为控制制造过程中在Ti-钢异构结构中的有害碳扩散提供了洞察力.
- 对于Ti + C → TiC反应的激活能量随着钢的碳含量增加而下降.
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