Promotion of running-in process by UV irradiation to CN_x coating and improvement of proof property of pressure
紫外线照射促进CN_x涂层磨合,提高耐压性能
基本信息
- 批准号:20760097
- 负责人:
- 金额:$ 2.75万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Young Scientists (B)
- 财政年份:2008
- 资助国家:日本
- 起止时间:2008 至 2009
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The superlow friction phenomena of CN_x (Carbon Nitride) coating slid against Si3N4 ball in N2 gas was suggested to be taken place when the topmost surface of CN_x changed to graphitic structure. It was assumed that ultraviolet ray (UV) could break C-N single bond when the ray power exceeded C-N single bonding energy, and we hypothesized that UV irradiation could make the CN_x coating topmost surface graphitic without friction in N2 gas. We carried out preparing the CN_x coating irradiated UV as 254, 312, and 365 nm wave length, then these specimens were friction tested in N2 gas or ambient air to compare frictional property of with and without UV irradiation. All specimens did not show superlow friction coefficient at the initial of friction tests in N2 or ambient air, however, the coatings which were UV irradiated showed superlow friction phenomena after several friction cycles and all UV irradiated specimens showed shorter running-in period than as-deposited CN_x. The average of initial several friction cycles of as-deposited CN_x showed approximately 0.04, on the other hand, in the case of 312 nm UV irradiated CN_x showed 0.01 or lower average friction coefficient. These results indicated that UV could break the C-N single bond, these broke bonds were restructured to graphitic layer.
在N2气氛中,CN_x(Carbon Nitride)涂层与Si_3N_4球摩擦时的超低摩擦力现象是在CN_x最高表面转变为石墨结构时发生的。我们假设当紫外线的辐射功率超过C-N单键能时,紫外线可以使C-N单键断裂,并且我们假设紫外线照射可以使CN_x涂层的最表层在N2气体中无摩擦地石墨化。在254、312和365 nm波长的紫外光照射下制备CN_x涂层,然后在N2气和空气中进行摩擦试验,比较紫外光照射前后CN_x涂层的摩擦性能。所有试样在N2和大气中的摩擦试验初期均未表现出超低摩擦系数,而经紫外光辐照的涂层在多次摩擦循环后均表现出超低摩擦现象,且所有经紫外光辐照的试样的磨合期均比沉积态CN_x短。沉积态CN_x的初始摩擦系数的平均值约为0.04,而312 nm紫外光辐照的CN_x的平均摩擦系数为0.01或更低。结果表明,紫外光照射可以使碳氮单键断裂,断裂的碳氮键重新形成石墨层。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
The effect of Ultraviolet ray irradiation on CNx coating's tribological property
紫外线照射对CNx涂层摩擦学性能的影响
- DOI:
- 发表时间:2009
- 期刊:
- 影响因子:0
- 作者:久保田章亀;栗原宗也;中西義孝;峠睦;野老山貴行
- 通讯作者:野老山貴行
紫外線を用いたCNx膜極表面の改質と摩擦特性
利用紫外线和摩擦性能对CNx薄膜极性表面进行改性
- DOI:
- 发表时间:2009
- 期刊:
- 影响因子:0
- 作者:道川隆士;中崎瞬;鈴木宏正;野老山貴行
- 通讯作者:野老山貴行
Ultraviolet ray irradiation effect on frictional property of Carbon Nitride coating
紫外线照射对氮化碳涂层摩擦性能的影响
- DOI:
- 发表时间:2009
- 期刊:
- 影响因子:0
- 作者:Takayuki Tokoroyama;Makoto Kamiya;Yoshio Fuwa;Noritsugu Umeahara
- 通讯作者:Noritsugu Umeahara
The effect of Ultraviolet ray irradiation on frictional behavior of Carbon Nitride coating in nitrogen gas
紫外线照射对氮化碳涂层在氮气中摩擦行为的影响
- DOI:
- 发表时间:2009
- 期刊:
- 影响因子:0
- 作者:Akihisa Kubota;Keita Yagi;Junji Murata;Heiji Yasui;Shiro Miyamoto;Hideyuki Hara;Yasuhisa Sano;Kazuto Yamauchi;T. Tokoroyama
- 通讯作者:T. Tokoroyama
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