【公開日：2023.07.31】【最終更新日：2023.05.23】

課題データ / Project Data

課題番号 / Project Issue Number

22UT0016

利用課題名 / Title

Surface analysis of stainless steel 

利用した実施機関 / Support Institute

東京大学 / Tokyo Univ.

機関外・機関内の利用 / External or Internal Use

内部利用（ARIM事業参画者以外）/Internal Use (by non ARIM members)

技術領域 / Technology Area

【横断技術領域 / Cross-Technology Area】（主 / Main）計測・分析/Advanced Characterization（副 / Sub）-

【重要技術領域 / Important Technology Area】（主 / Main）その他/Others（副 / Sub）-

キーワード / Keywords

各種表面処理等,電子顕微鏡/Electron microscopy,X線回折/X-ray diffraction

利用者と利用形態 / User and Support Type

利用者名（課題申請者）/ User Name (Project Applicant)

Abdelrahman Mohamed Farghali Abdelati

所属名 / Affiliation

東京大学

共同利用者氏名 / Names of Collaborators in Other Institutes Than Hub and Spoke Institutes

ARIM実施機関支援担当者 / Names of Collaborators in The Hub and Spoke Institutes

利用形態 / Support Type

（主 / Main）機器利用/Equipment Utilization（副 / Sub）-

利用した主な設備 / Equipment Used in This Project

UT-202：高輝度In-plane型X線回折装置
UT-102：高分解能走査型分析電子顕微鏡

報告書データ / Report

概要（目的・用途・実施内容）/ Abstract (Aim, Use Applications and Contents)

Many attempts to overcome these limitations have been conducted by depositing a thin layer to improve the mechanical and tribological properties. In particular, among the diamond like carbon (DLC) coatings, a hydrogenated amorphous carbon (a C:H) thin film material that best satisfies the previous classification. Recently DLC films attracted significant attention due to their ability to be tailored to fit several applications in severe conditions and environments

実験 / Experimental

Diamond Like Carbon (DLC) films were deposited by bipolar plasma based ion implantation (PBII) technique using Tetramethylsilane (TMS) and Toluene (C7H8) gases at ambient temperature for a total of 3 h under positive and negative voltages of +1.5 and 5, receptively.After both processes, the samples were cut and polished until a mirror like surface is obtained in the cross section. All samples were analyzed and observed by Raman spectroscopy, scanning electron microscope (SEM), and energy dispersive spectroscopy (EDS). The adhesion between DLC films and substrate was tested by using the Rockwell C indentation method with 1471N (150 kgf) load. The indented areas were later observed by digital microscopy.

結果と考察 / Results and Discussion

The different morphologies are obtained due to the nitrogen diffusion into the steel structure which leads to a high percentage of grain refinement and phase transformation from the original martensite (α') phase to the expanded martensite (α'N) phase.

図・表・数式 / Figures, Tables and Equations

その他・特記事項（参考文献・謝辞等） / Remarks(References and Acknowledgements)

成果発表・成果利用 / Publication and Patents

論文・プロシーディング（DOIのあるもの） / DOI (Publication and Proceedings)

口頭発表、ポスター発表および、その他の論文 / Oral Presentations etc.

特許 / Patents

特許出願件数 / Number of Patent Applications：0件
特許登録件数 / Number of Registered Patents：0件