Investigation of microstructure and wear properties of AISI M2 high speed steel nozzles coated with different hard coatings (TiN, CrN, AlCrN, AlTiN and AlTiN) by PVD method

Hediye Aydin,M. Ahmet Söyler 한양대학교 청정에너지연구소 2023 Journal of Ceramic Processing Research Vol.24 No.5

High-speed steels (HSS) have high hardness, toughness, shock resistance, and wear resistance at room and increasedtemperatures due to their high ratio of alloy elements. Even though the low wear resistance compared with cemented carbidesis a significant disadvantage, recent advances in surface technologies have increased surface hardness and wear resistance. Inthe present study, the “cathodic arc vapor deposition” method from among the PVD coating methods was used for coatingthe sample surfaces of the glaze spray nozzles prepared using AISI M2 high-speed steel material prepared with TiN, AlCrN,AlCrTiN, and AlTiN. Scanning electron microscope (SEM) was used to identify that the coatings display a homogeneous andcrack-free distribution. The micro-hardness of AISI M2 high-speed steel-coated ceramic coatings was also investigated. Accordingly, the highest hardness value was obtained for the TiN-coated sample, whereas the lowest hardness value wasobtained for the AlCrTiN-coated sample. The ball-on-disc method was used to compare the wear characteristics of thesamples, considering the distance from the coatings until fracture. When the wear resistance of the coated samples wasexamined, it was observed that the most significant increase was obtained in AlCrN coated sample compared with the originalsample.

SM45C재의 PVD코팅과 필름에 의한 트라이볼러지 특성

심현보,서창민,김종형,서민수 한국해양공학회 2018 韓國海洋工學會誌 Vol.32 No.6

In order to accumulate data to lower the friction coefficient of a press mold, tribological tests were performed before and after coating SM45C with a PVC/PO film and plasma coating (CrN, concept). The ultrasonic nanocrystal surface modification (UNSM)-treated material had a nano-size surface texture, high surface hardness, and large and deep compressive residual stress formation. Even when the load was doubled, the small amount of abrasion, small weight of the abrasion, and width and depth of the abrasion did not increase as much as those of untreated materials. A comparison of the weight change before and after the tribological test with the CrN and the concept coating material and that of the untreated material showed that the wear loss of the concept coating material and P-UNSM treated material (that is, the UNSM treated material treated with the concept coating) showed a tendency to decrease by approximately 55–75%. Concept 100N had a lower friction coefficient of about 0.6, and P-UNSM-30-100N showed almost the same curve as concept 100N and had a low coefficient of friction of about 0.6. The concept multilayer coating had a thickness of 5.32 μm. In the beginning, the coefficient of friction decreased because of the plasma coating, but it started to increase from about 250–300 s. After about 350 s, the coefficient of friction tended to approach the friction coefficient of the SM45C base metal. The SGV-280F film-attached test specimen was slightly pushed back and forth, but the SM45C base material was not exposed due to abrasion. The friction coefficient was 0.22, which was the lowest, and the tribological property was the best in this study.

나노구조 제어를 위한 EB-PVD법에 의한 세라믹스 코팅

松原 秀彰(Hideaki MATSUBARA) 한국세라믹학회 2006 세라미스트 Vol.9 No.6

Corrosion and wear behavior of TiN PVD coated 304 stainless-steel

Awais Awan,Riffat Asim Pasha,Muhammad Shoaib Butt,Rizwan Ahmed Malik,Ibrahim M Alarifi,Meshal Alzaid,무하마드 라티프,Ammar Naseer,Mohsin Saleem,Hussein Alrobei 대한기계학회 2020 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.34 No.8

Ti/TiN multilayered physical vapor deposition (PVD) coatings were deposited on stainless-steel by cathodic arc deposition method. Bare sample of stainless steel 304 was compared with monolithic TiN coating and TiN coating having 2, 4, 6 and 8 Ti interlayers. The properties like corrosion and wear resistance were studied and analyzed comparatively. Potentiodynamic polarization curves showed that highest corrosion resistance was indicated by TiN coating with 8 Ti interlayers. Sample having 8 Ti interlayers have high corrosion potential (E corr ) and low corrosion current density (I corr ) as compared to other samples. This may be attributed to the arrangement of interlayers that prevents the corrosive agents to penetrate surface. All multilayered coatings show better results than the substrate material. Pin on disk wear test revealed that coating having monolithic TiN layer have the lowest coefficient of friction and consequently have less wear volume and wear rate as compared to other coatings with Ti interlayers. These results made the investigated coated stainless steel 304 valuable for wide range of industrial applications that required wear and corrosion resistance.

초경절삭공구의 CVD Diamond 코팅층 형성에 관한 연구

최종수(Jong-Su Choi) 산업기술교육훈련학회 2011 산업기술연구논문지 (JITR) Vol.16 No.2

CVD diamond films was deposited on hard tool substrate by MPECVD(Microwave Plasma Enhanced Chemical Vapor Deposition) System. Etchingwith diluted HNO3 and Murakami s reagent were used as substrate pretreatment. CVD diamond thin films were deposied by normal and cyclic process, which can be carried out periodically on and off the methane and oxygen gas flow in the H2-CH4-O2 system. Crystal structures for grown films, such as microcrystalline and surface morphology are characterized in term of growth condition by SEM, micro raman spectroscopy and AFM respectively. The Raman spectra of the nano particle consist mainly of two clearly distinct peak near 1140 and 1332cm-1. The Ra surface roughness of the films was observed at below approximately 200nm. The best conditions of CVD coating for hard insert tool are microwavepower 1000W, pressure 30torr, CH4/H2 rate 2% and deposition time 4hr. Also, CVD diamond coating has carried out on the surface of hard-metal inserts turning tool using microwave plasma CVD device. Through the pre-treatment process in coating and the gas flow control it forms optimal diamond coating layer condition on insert tool surface.

TiN증착 조건에 따른 박막의 수명증대에 대한 실험적 연구

박일수(il soo Park) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.10

Formation of TiN films by PVD method and the DC and RF sputtering deposition method can be applied, the injected gas to generate plasma ionization rate of the film forming speed is slow away, anything to increase the adhesion between films limitations have. To improve this, to investigate the deposition and ion beam evaporation simultaneously IBAD(lon beam assisted deposition) when used, Ion beam surface coating material prior to the survey because the surface cleaning effect of a large, high film adhesion can be obtained. In addition, the high vacuum and low temperature, high purity thin fi 1m of uniform thickness in the benefits is.

플라즈마 용사 및 전자빔 물리기상 증착법으로 제조된 4YSZ 코팅의 고온마찰마모 거동

양영환(Young-Hwan Yang),박찬영(Chan-Young Park),이원준(Won-Jun Lee),김선주(Sun-Joo Kim),이성민(Sung-Min Lee),김성원(Seongwon Kim),김형태(Hyung-Tae Kim),오윤석(Yoon-Suk Oh) 한국표면공학회 2013 한국표면공학회지 Vol.46 No.6

4 mol% Yttria-stabilized zirconia (4YSZ) coatings are fabricated by Air Plasma Spray (APS) and Electron Beam Physical Vapor Deposition (EB-PVD) with top coating of thermal barrier coating (TBC). NiCrAlY based bond coat is prepared as 150 μm thickness by conventional APS (Air Plasma Spray) method on the NiCrCoAl alloy substrate before deposition of top coating. Each 4YSZ top coating shows different tribological behaviors based on the inherent layer structures. 4YSZ by APS which has splat-stacked structure shows lower friction coefficient but higher wear rate than 4YSZ by EB-PVD which has columnar structure. For 4YSZ by APS, such results are expected due to the sliding wear accompanied with local delamination of splats.

전자빔 필라멘트의 개발

이정익(Jeong-ick Lee),이응석(Eung-seog Lee),유병일(Byung-il Yoo) 한국생산제조학회 2007 한국생산제조시스템학회 학술발표대회 논문집 Vol.2007 No.10

Thin film manufacturing process is placed on the main technology of semiconductor manufacturing process, high resolution technology of hard and laser disk, plate disc player manufacturing process of LCD/PDP. Futhermore, this process is used as general technology in deposition and electric wave cover of mobile phone cover, reflecting plate of lamps, cosmetic vessel, optics surface coating of camera lens and coating film producing of several goods. In this research, the main purpose is developing in electric heat resistive using as basic material in semiconductor manufacturing process and many industrial processes. The developing process is as follows. Electron beam is emitted by heating of tungsten filament in high vacuum environment. Then electrons are accelerated in high voltage. The electrons are collided into opposite material. The opposite material is coating by producing heat. The first year of research is for mechanical property of filament wire per diameter and computer aided engineering for developing high efficiency electric heat resistive. The second year of research is focused on development of automatic inspection line for mass production. If electric heat resistive is developed through this project, the product could be having a product power because of high efficiency, high cost effective and comparing to foreign goods.

전자빔 필라멘트의 연구 및 개발

이정익(Jeong-Ick Lee),이응석(Eung-Seok Lee) 한국생산제조학회 2008 한국생산제조시스템학회 학술발표대회 논문집 Vol.2008 No.5

Thin film manufacturing process is placed on the main technology of semiconductor manufacturing process, high resolution technology of hard and laser disk, plate disc player manufacturing process of LCD/PDP. Furthermore, this process is used as general technology in deposition and electric wave cover of mobile phone cover, reflecting plate of lamps, cosmetic vessel, optics surface coating of camera lens and coating film producing of several goods. In this research, the main purpose is developing in electric heat resistive using as basic material in semiconductor manufacturing process and many industrial processes. The developing process isas follows. Electron beam is emitted by heating of tungsten filament in high vacuum environment. Then electrons are accelerated in high voltage. The electrons are collided into opposite material. The opposite material is coating by producing heat. The first year of research is for mechanical property of filament wire per diameter and computer aided engineering for developing high efficiency electric heat resistive. The second year of research is focused on development of automatic inspection line for mass production. If electric heat resistive is developed through this project, the product could be having a product power because of high efficiency, high cost effective and comparing to foreign goods.

Enhancement of the punch pin durability induced by the PVD coating in production process of the automotive inner pipe

서창민,오상엽,Young-Sik Pyun 대한기계학회 2010 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.24 No.5

This experimental studies were carried out in order to understand the effects of the PVD coating and the UNSM treatment of HSS55(high speed steel 55) during the production of the automotive inner pipe by the plastic deformation of S45C. The field test and the SEM images revealed that the PVD coating is necessary in spite of the high compressive residual stresses which were formed at the head of a punch pin. Upon the application of the AlCrN coating with the UNSM treatment the productivity and reliability of a punch pin had improved more than about 2.6 times compared to that of the TiN coating without the UNSM treatment. It is likely that the improvement is caused by the decreased stress concentration factor by the ‘wrapped in oxides’ inside of an abrasion pit. The abrasion pits were mostly generated within range of 5% ~ 50% of the diameter ratio from the end of a pin and reached the maximum value about 17% from the end of a pin.