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

界面增韧的疲劳可靠性保证。

• 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
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12450042/
• 关键词: Surface Modification; Diamond Like Carbon; Fatigue Reliability; Interface Toughening; Adhesion; Safety Guarantee; 界面靱化

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、膜层非常厚的超级DLC薄膜。并且，针对构建能够正确评价DLC膜疲劳可靠性的寿命加速试验方法，进行了3​​年的示范性基础研究。本研究的目的是使复杂的表面纹理和疲劳可靠性与DLC薄膜和背衬之间的界面增韧的矛盾特性在高维度上兼容。针对以下三个问题进行了知识的系统整理。 (1)超级DLC薄膜发明流程的构建；构建了实现DLC膜超低摩擦系数、超厚膜层的优化处理工艺。 (2)界面增韧、粘结强化结构的优化和处理工艺的系统化；通过对最佳微观结构的控制和复合化工艺的系统化，实现界面增韧和粘合强化。 (3)疲劳可靠性保障体系建设；基于加速试验方法，系统梳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薄膜材料发明在内的一致的可靠性保障体系。本次研究三年取得的成果如下。 (1)对通过DLC涂层改善摩擦性能的Al-Si烧结合金进行疲劳可靠性评价。与未加工材料相比，DLC覆盖材料的疲劳强度有所提高。这是因为通过进行DLC涂层提高了Si颗粒和背衬之间的界面强度。 (2)考察了高速工具钢SKH-51进行Hybrid DLC涂层加工对疲劳强度的影响。对工具钢进行表面改性处理时，不仅要充分重视表面功能的改善，还要充分重视热历程残余应力的改善。较少的

项目成果

原口忠男, 中村雅史, 呉定錫, 鈴木秀人: "DLCコーテイングによるAl-Si焼結合金の疲労脆性破壊特性の改善"日本機械学会論文集A編. (投稿中).

Tadao Haraguchi、Masashi Nakamura、Dingxiu Wu、Hideto Suzuki：“通过 DLC 涂层改善 Al-Si 烧结合金的疲劳脆性断裂性能”日本机械工程师学会会议录，A 卷（进行中）。

鈴木秀人: "ナノDLC表面改質による環境に優しい摺動機器の開発"日本機械学会関東支部茨城講演会論文集. 251-252 (2001)

铃木英人：“通过纳米DLC表面改性开发环保滑动设备”日本机械工程学会关东分会茨城会议论文集251-252（2001年）。

Hideto SUZUKI, Satoshi YASU, Tekeshi KASUYA, Motoaki WATANABE and Shinobu NEMOTO: "The effect of the backing hardness on surface characteristics of a DLC film"Proceedings of the Japan Soc. Of Mechanical Engineers Kanto branch Ibaraki lecture. 235-236 (200

Hideto SUZUKI、Satoshi YASU、Tekeshi KASUYA、Motoaki WATANABE 和 Shinobu NEMOTO：“背衬硬度对 DLC 薄膜表面特性的影响”日本学会会议记录。

鈴木秀人, 菅原慎吾, 粕谷健志, 安岡学: "表面改質を施した高速度工具鋼SKH-51の疲労信頼性"日本機械学会関東支部茨城講演会論文集. 253-254 (2002)

Hideto Suzuki、Shingo Sukawara、Kenji Kasuya、Manabu Yasuoka：“表面改性高速工具钢 SKH-51 的疲劳可靠性”日本机械工程学会关东分会茨城会议记录 253-254（2002 年）。 ）

Atsuo Kawana, Hideto Suzuki: "Influence of DLC Thin Film on Toughening of Al-Si Sintered Alloy (Improvement in Property of Fatigue Brittle Fracture)"Proceeding of APCF & ATEM '01. 446-451 (2001)

Atsuo Kawana、Hideto Suzuki：“DLC 薄膜对 Al-Si 烧结合金增韧的影响（改善疲劳脆性断裂性能）”APCF 论文集