When the synthesized YOF powders were used as a raw material for the suspension plasma spray(SPS) coating ... , the crystalline phases of the coated layer consisted of YOF and Y2O3, indicating that oxidation or ... evaporation of YOF powders occurred during the coating process.
In this study, perovskite (La0.8Ca0.2)(Cr0.9Co0.1)O3 (LCCC) coatings manufactured by atmospheric plasma ... The plasma-sprayed LCCC coating formed an inhomogeneous layered structure after the successive deposition ... LCCC coating were connected together and allowed substantial amounts gas to pass through the coating
Suspension plasma spraying is applied as the coating method. ... By changing the coating parameters such as the deposition distance, it is found that a denser coating ... Moreover, environmental barrier coating (EBC) technologies using oxide-based ceramic materials have been
In this study, AlN-YAG composite coatings were manufactured by atmospheric plasma spraying from two different ... A high thermal conductive AlN composite coating is attractive in thermal management applications. ... The AlN-YAG coatings consisted of irregular-shaped, crystalline AlN particles embedded in amorphous YAG
시편은 IN738LC 초합금 표면에 8wt%Y2O3-ZrO2분말을 플라즈마 용사법으로 코팅한 후 1200˚C, 100MPa의 고온, 고압에서 4시간 동안 HIP 처리하여 준비하였다. ... 이러한 코팅층의 치밀화 및 상호확산으로 인해 HIP처리된 코팅층의 접착강도는 48% 이상 크게 증가하였으며 조직 또한 균질화 되었다. ... 반면 가열과 냉각이 반복되는 환경에서 코팅층의 내구력은 HIP 처리된 경우가 다소 저하되었다.
Hydrophilic SiO2 layers were obtained by the atmospheric-pressure plasma treatment. ... layers were greatly changed: a dramatic variation of the water contact angle from 162˚ to 3˚, namely ... to the hydrophilic nature observed for the plasma-exposed SiO2 layers.
http://www.naver.com 참고 문헌 및 자료 V 플라즈마를 이용한 코팅 감사합니다. ... 기체상의 탄소원(Carbon source) - Radio Frequency/DC Plasma Enhanced CVD ECR 방법 - 플라즈마의 glow 영역에서 이온생성, 가속하여 ... Carbon (sp2) Dense Carbon Carbon Source Hydrocarbon Source Dense Hydro- Carbon Polymer Like Carbon Plasma
본 연구에서는 인코넬 713C에 전자빔 코팅 및 플라즈마 용사법으로 코팅된 안정화지르코니아/CoNiCrAIY 계면의 산화거동을 조사하기 위하여 900˚C에서 등온산화시험동안 생성되는 ... 코팅 직후 코팅층에 고르게 분포하고 있는 Co,Ni,Cr,AI,Zr의 원소들이 산화시간에 따라 확산하여 산화반응을 하였다. ... 열차폐코팅층의 박리는 세라믹/금속접합층 계면에서 취성이 큰 스피텔의 생성, 금속과 세라믹의 열팽창계수의 차이, 세라믹층의 상변태, 코팅층의 잔류응력에 기인한다.
In this study, the degree of particle melting in Y2O3 plasma spraying and its effects on coating characteristics ... Plasma sprayed Y2O3 coatings were formed using two different powder feeding systems: a system in which ... The microhardness and scratch resistance of the Y2O3 coatings were improved by external powder spraying
High temperature plasmacoating technology has been applied to recover damaged aluminum dies from wear ... The specimen with a bond coat layer coated with a gun speed of 20 cm/sec and three coating cycles exhibited ... In order to prepare the specimen with variable bond coating conditions, the bond coat layers with a various
and the powders were sprayed into hybrid coating layers by using Low Vacuum Plasma Spray (LVPS) process ... The plasma torch test revealed good ablation resistance of the W-Carbide hybrid coating layers. ... W-ZrC and W-HfC composite powders were fabricated by the Plasma Alloying & Spheroidization (PAS) method
듀플렉스(Duplex coating) 듀플렉스 코팅은 모재에 얇은 질화층을 형성한 후 그 위에 질화박막을 형성하는 증착방법을 말한다. ... 모재의 질화층은 플라즈마 radical 질화법을 이용하여 코팅하고자 하는 나이크라이드 계열의 박막과 유사한 화학적, 기계적 물성을 가진다. ... 플라즈마 보라이딩은 플라즈마를 이용하여 가스를 활성화시키고 음극방출에 의해 표면 반응을 촉진한다는 측면에서 전술한 플라즈마 질화방법의 원리와 유사하다.
Although the plasma sprayed LSCC coating contained the characteristic pore network, the coated samples ... properties of the LSCC coated STS-430 were investigated. ... In this study, an effective, dense and well adherent (LaSr)(CrCo) [LSCC] coating layer was produced onto
In addition, a dense YSZ coating with fully developed phase can be obtained via suspension plasma spray ... Yttria-stabilized zirconia (YSZ) coatings are fabricated via suspension plasma spray (SPS) for thermal ... In the case of planetary-milled commercial YSZ powder, a deposited thick coating turns out to have a
Plasma electrolytic oxidation을 통한 산화막 코팅 결과보고서 재료공학실험 Ⅳ a. ... -그림 설명- a curve에서 U1부터 U2까지는 potential이 증가하는 것이 current oscillation을 동반하게 된다. ... 실험 과정 정리 본 실험에서는 zirconium을 plasma electrolytic oxidation을 통해 표면 처리를 해주어 zirconia(ZrO2)를 만드는 공정을 거쳤다.