Production and tribological properties of friction-induced ultra-fine and nanocrystalline structures on metal surfaces

金属表面摩擦引起的超细和纳米晶体结构的产生和摩擦学性能

• 批准号: 19560153
• 负责人: KATO Hirotaka
• 金额: $ 2.75万
• 依托单位: Fukui National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19560153/
• 关键词: トライボロジー; 摩擦; 表面膜; ナノ結晶化; せん断塑性変形; 材料移着; 耐摩耗性; ピンオンディスク; 超強加工; ナノ粒子; ナノ結晶; ビスマス粒子

Sliding friction tests of pin-on-disc type were carried out for carbon steel, pure iron and pure copper, and the microstructure and hardness near the sliding surfaces were investigated in detail. It was found that patchy transfer layers with ultra-fine structures were produced on the disc surfaces. Nanocrystalline of 30-50nm was identified for carbon steel, and submicron size grains of 100-150nm were observed in pure copper. The thicknesses of the ultra-fine structures were in the range of 10-50μm, depending on the specimen material, sliding speed and applied load. The hardness near the sliding surface of pure iron was increased compared with the matrix. It was suggested that the hardening was due to the very fine structure by severe plastic deformation, but not due to phase transformation caused by thermal effects.

对碳钢、纯铁和纯铜进行了销盘式滑动摩擦试验，详细研究了滑动表面附近的显微组织和硬度。结果发现，光盘表面产生了具有超精细结构的斑状转移层。在碳钢中发现了 30-50nm 的纳米晶，在纯铜中观察到了 100-150nm 的亚微米尺寸晶粒。超精细结构的厚度在 10-50μm 范围内，具体取决于样本材料、滑动速度和施加的载荷。纯铁滑动面附近的硬度较基体有所提高。有人认为，硬化是由于严重塑性变形导致的非常精细的结构，而不是由于热效应引起的相变。

项目成果

Surface nanostructure and modified layer formed on hard coatings with femtosecond laser pulses

用飞秒激光脉冲在硬质涂层上形成表面纳米结构和改性层

• 发表时间: 2009
• 期刊: Special issue of“NETSU SHORI"、Journal of the Japan Society for Heat Treatment Vol.49
• 作者: Hirotaka Kato;Masato Sasase;Nobuaki Suiya;N. Yasumaru
• 通讯作者: N. Yasumaru

金属同士の摩擦により生成した移着膜の特徴とその摩耗特性

金属间摩擦产生的转移膜特性及其磨损特性

• 发表时间: 2010
• 期刊: トライボロジスト 55,3
• 作者: 加藤寛敬;常光幸美;笹瀬雅人;推谷信昭
• 通讯作者: 推谷信昭

Friction-induced ultra-fine and nanocrystalline structures on metal surfaces in dry sliding

• DOI: 10.1016/j.triboint.2009.12.040
• 发表时间: 2010-05-01
• 期刊: TRIBOLOGY INTERNATIONAL
• 影响因子: 6.2
• 作者: Kato, Hirotaka;Sasase, Masato;Suiya, Nobuaki
• 通讯作者: Suiya, Nobuaki

Production and wear behavior of tribofilms by supplying oxide nanoparticles on rubbing steel surfaces

通过在摩擦钢表面上提供氧化物纳米粒子来产生摩擦膜和磨损行为

• 发表时间: 2009
• 期刊: J. Solid Mech. Mater. Eng. Vol.3
• 作者: Hirotaka Kato;Masato Sasase;Nobuaki Suiya;N. Yasumaru;H. Kato
• 通讯作者: H. Kato

Tribofilms produced by supplying fine metal particles on rubbing surfaces in vacuum

通过在真空中向摩擦表面提供细小金属颗粒而产生摩擦膜

• 发表时间: 2009
• 作者: H. Kato、A. Takimi;M. Umemoto
• 通讯作者: M. Umemoto