Study on the mechanism of ultra-low friction coefficient of CVD diamond in vacuum

真空CVD金刚石超低摩擦系数机理研究

• 批准号: 23560172
• 负责人: KANDA Kazutaka
• 金额: $ 3.58万
• 依托单位: Fukui University 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: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23560172/
• 关键词: ダイヤモンド; CVD; 摩擦係数; 真空; アルゴン; 酸化膜; しゅう動部材; メカニズム; トライボロジー; 黒鉛; 超潤滑; 研磨; 摺動部品

Recently, super-lubricity phenomenon showing low coefficient of friction of 0.1 or less were found in the friction test performed in vacuum for the combination of CVD diamond and metals. This phenomenon can't be explained by conventional theory, since almost all matals are thought to be show high coefficient of friction under vacuum condition. To clarify the mechanism of this phenomenon, friction tests for the combination of CVD diamond and many kinds of metals were carried out in air, vacuum, and argon. In this experiment, three types of stainless steels with different Ni contents were used for mating material of CVD diamond. From the XPS analysis of sliding surfaces, carbon and oxygen was found for combination of CVD diamond and metals, which show especially low coefficient of friction. From these results, it was clarified that the oxygen in the oxide film play a role as a catalyst for graphitization of diamond, and showing a low coefficient of friction in vacuum.

最近，在CVD金刚石与金属的真空摩擦试验中发现了摩擦系数低至0.1以下的超润滑现象。这种现象无法用传统理论来解释，因为几乎所有的材料都被认为在真空条件下表现出高摩擦系数。为了阐明这种现象的机理，在空气、真空和氩气中对CVD金刚石与多种金属的结合进行了摩擦试验。在本实验中，采用了三种不同Ni含量的不锈钢作为CVD金刚石的配合材料。通过对滑动表面的 XPS 分析，发现 CVD 金刚石和金属的结合处存在碳和氧，显示出特别低的摩擦系数。从这些结果可以看出，氧化膜中的氧起到金刚石石墨化催化剂的作用，并且在真空中表现出低摩擦系数。

项目成果

黒鉛材料の摩擦特性

石墨材料的摩擦性能

• 发表时间: 2012
• 作者: 塩入翔也;神田一隆;橋本賢樹
• 通讯作者: 橋本賢樹

CVDダイヤモンドの摩擦係数の荷重依存性

CVD 金刚石摩擦系数的载荷依赖性

• 发表时间: 2012
• 作者: 神田一隆;橋本賢樹;中村健太;玉置賢次
• 通讯作者: 玉置賢次

ダイヤモンドおよびDLCの摩擦特性

金刚石和DLC的摩擦特性

• 发表时间: 2014
• 作者: 神田一隆

多結晶ダイヤモンド膜の鋼材との摩擦特性

聚晶金刚石薄膜与钢材的摩擦性能

• 发表时间: 2013
• 作者: 中村健太

CVDダイヤモンドとステンレス鋼の真空下の摩擦特性

真空下CVD金刚石与不锈钢的摩擦性能

• 发表时间: 2012
• 作者: 中村健太