Fatigue reliability guarantee of the interface toughening. Super surface modified material.

界面增韧的疲劳可靠性保证。

基本信息

批准号：
12450042
负责人：
SUZUKI Hideto
金额：
$ 9.73万
依托单位：
IBARAKI UNVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2002
项目状态：
已结题

项目摘要

In this research, the super DLC film which turns an interface toughly and has a very low wear coefficient and a very thick film was invented. And, the demonstrative basic research for 3 years was carried out on the construction of life accelerated test method which can appropriately evaluate fatigue reliability of a DLC film. The purpose of this study is that contradictory characteristics that is complicated surface texture and fatigue reliability with the interface toughening between DLC film and backing are compatible in the high dimension. The systematic arrangement of a knowledge was carried out on three problems of the following. (1) Construction of the super DLC film invention process ; Optimized treating process which realizes ultra low friction coefficient and super thick film of a DLC film is constructed. (2) Optimization of the interface toughening, the adhesive strengthening structure and the systematization of the treating process ; Control of the optimal micro structure an … More d a composite-ized process are systematized systematically to realize the interface toughening and the adhesive strengthening. (3) Construction of the fatigue reliability guarantee system ; Based on the accelerated test method, consistent reliability assurance system including the invention of the super DLC film material is constructed by systematically arranging a knowledge on product safety guarantee in the very long life region.The result obtained by this study for three years is as follows. (1)Fatigue reliability evaluation of the Al-Si sintered alloy which improved the frictional property by conducting DLC coating was carried out. The fatigue strength of DLC covering material was improved in comparison with unprocessed material. This is because that the interface strength between Si particle and backing is improved by conducting the DLC coating. (2)The effect of Hybrid DLC coat processing conducted to high speed tool steel SKH-51 on the fatigue strength was examined. It is necessary to pay the sufficient attention in not only improvement in the surface function but also heat history residual stress, when the surface reforming processing is conducted to the tool steel. Less

本研究发明了界面坚韧、磨损系数极低、膜层极厚的超级DLC薄膜，并针对寿命加速试验方法的构建进行了3年的示范性基础研究。本研究的目的是对DLC薄膜与背衬之间的界面增韧的复杂表面纹理和疲劳可靠性的矛盾特性进行了系统的整理。解决了三个问题(1)超级DLC薄膜发明工艺的构建；构建了实现DLC薄膜超低摩擦系数和超厚膜的优化处理工艺。(2)界面增韧、粘合强化结构和系统化的优化。 (3)基于加速试验方法构建疲劳可靠性保障体系，一致性可靠性保证；系统地整理了超长寿命领域的产品安全保障知识，构建了包括超级DLC薄膜材料的发明在内的体系。经过三年的研究，得到的结果如下： (1)铝的疲劳可靠性评估。 -通过进行DLC涂层来改善摩擦性能的Si烧结合金与未处理的材料相比，DLC覆盖材料的疲劳强度得到了提高，这是因为通过进行了DLC涂层，Si颗粒和背衬之间的界面强度得到了提高。 DLC涂层。 (2)研究了对高速工具钢SKH-51进行混合DLC涂层处理对疲劳强度的影响，不仅要充分关注表面功能的改善，还要充分关注热历史残余应力。对工具钢进行表面改性处理较少。