一个装甲结构来抑制陶涂层的脆性失败
Wei Liu1, Fubing Bao1,2, Yinning Zhang2
1School of Mechanical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China.
Materials (Basel, Switzerland)
|July 29, 2023
概括
一种新的装甲陶涂层可以防止脆性故障,提高耐用性. 这种创新的涂层表现出优越的热冲击阻力和减少剥离,扩大陶应用.
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?
- 机械工程 机械工程
背景情况:
- 陶涂料的脆性故障限制了它们在苛刻应用中的使用.
- 开发强大的陶涂层对于延长材料寿命和性能至关重要.
- 现有的涂层往往缺乏足够的耐热冲击和机械应力.
研究的目的:
- 开发一种新型的装甲陶涂层,可以抑制脆性失败.
- 提高钢基板上的陶涂层的粘附性和机械性能.
- 评估新涂层的耐热冲击,粘附和腐蚀性能.
主要方法:
- 在轻钢基板上微加工一个相互连接的框架微结构,使用纳米秒激光.
- 应用聚合物衍生的陶泥和随后的烧结以形成装甲涂层.
- 进行机械性能测试,包括热冲击和剥离测试,以及实验室和现场腐蚀测试.
主要成果:
- 装甲涂层承受了超过20个周期的600°C的水冷热冲击.
- 与在1471N负载下未装甲涂料相比,剥皮面积减少了大约三倍.
- 高温耐腐蚀性与未装甲涂层相当,比未涂层样品高10倍.
结论:
- 激光微加工的微结构显著改善了涂层-基板粘附.
- 装甲陶涂层有效抑制脆性故障,提高耐用性和性能.
- 这种方法扩大了陶涂料在各种领域的应用范围.
相关概念视频
Brick Durability, Strength, and Appearance
248
Brick durability, strength, and appearance are crucial factors in construction, influencing the choice of bricks for specific applications. The process of freeze-thaw, for instance, significantly affects brick durability. This phenomenon occurs when water absorbed by a brick expands as it freezes, potentially causing damage when it melts and refreezes. Bricks are graded for durability: SW-grade bricks are the most durable, offering high strength and low water absorption, followed by MW-grade...
248
Abrasion Resistance of Concrete
164
Abrasion resistance is an essential characteristic of concrete that determines its durability and longevity under various wear conditions. Concrete surfaces are vulnerable to different types of abrasion. For instance, surfaces may wear down due to the constant movement of vehicles or be eroded by solids carried in water, as seen in concrete canal linings. Specific tests are conducted to measure the abrasion resistance of concrete.
One such test is the revolving disc test, where three plates...
One such test is the revolving disc test, where three plates...
164
Stress-Strain Diagram - Brittle Materials
2.6K
Brittle materials, including glass, cast iron, and stone, exhibit unique characteristics. They fracture without considerable change in their elongation rate, indicating that their breaking and ultimate strength are equivalent. Such materials also show lower strain levels at the point of rupture. The failure in brittle materials predominantly results from normal stresses, as evidenced by the rupture created along a surface perpendicular to the applied load. These materials do not display...
2.6K
Yield Criteria for Ductile Materials under Plane Stress
186
In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
The Maximum Shearing Stress Criterion, also known as...
The Maximum Shearing Stress Criterion, also known as...
186


