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Table of Contents | August, 2016  Vol. 54   No.8 Previous Issue | Next Issue | Archive
In this issue:

Research Papers
Corrosion & Surface Treatment
552 Fabrication of Decorative Coating/Patterning of Ceramic Pigment Powder Using Vacuum Kinetic Spraying Process
진공상온분사 공정을 이용한 세라믹 도료 분말의 장식용 코팅 및 패터닝 제조
Hyungkwon Park, Jinyoung Kim, Hansol Kwon, Seongtae Lee, Changhee Lee
박형권, 김진영, 권한솔, 이승태, 이창희
Korean J. Met. Mater. 2016;54(8):552-558.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.552

Vacuum kinetic spraying (VKS) is a relatively advanced process, by which a dense film can be fabricated at room temperature. Various materials including ceramic, metal, polymer and composite can be used as the substrate and coating materials. In this research, red and blue color films were successfully fabricated on glass..... More

Powder Metallurgy
559 Microstructure Changes of ZrO2/W/Mo Coating Layers on Graphite after Heat Treatment at 2100 ℃
용사 코팅한 ZrO2/W/Mo-Graphite 코팅층의 2100 ℃ 열처리 후 미세조직 변화에 관한 연구
Gyu Baek Ahn, Kyeong Hwan Choe, Sang Sub Kim, Gue Serb Cho
안규백, 최경환, 김상섭, 조규섭
Korean J. Met. Mater. 2016;54(8):559-565.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.559

A tungsten coating was deposited onto a graphite substrate using the atmospheric plasma spraying (APS) technique. In order to increase the adhesion strength between the metallic tungsten(W) and graphite, a molybdenum (Mo) interlayer was pre-deposited onto the graphite surface by utilizing the APS technique. Also, after deposition of a APS-W..... More

         Cited By 3
566 Fabrication and Mechanical Properties of Nanostructured TiC-TiAl by the Pulsed Current Activated Sintering
펄스전류 활성 소결에 의한 나노구조 TiC-TiAl 제조 및 기계적 성질
Bong-Won Kwak, Byung-Su Kim, Jin-Kook Yoon, Kyung-Tae Hong, In-Jin Shon
곽봉원, 김병수, 윤진국, 홍경태, 손인진
Korean J. Met. Mater. 2016;54(8):566-572.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.566

TiC-Co or TiC-Ni hard materials have been used for cutting tools. However, the high cost and the low hardness of Ni or Co, and the low corrosion resistance of the TiC-Ni and TiC-Co cermets have generated interest in recent years in using them as alternative binder phases. In this study,..... More

         Cited By 3
573 Photocatalytic Properties of Spherical Porous Titania Particles Synthesized by Emulsion-Assisted Colloidal Self-Assembly
콜로이드 자기조립법에 의해 제조된 다공질 구형 타이타니아 분말의 광촉매 특성
In-Ae Oh, Cheol Hwan Shin, Young-Sang Cho
오인애, 신철환, 조영상
Korean J. Met. Mater. 2016;54(8):573-584.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.573

Macroporous titania crystallites were synthesized using an emulsion-assisted self-assembly method to prepare a photocatalyst for the decomposition of organic dyes such as methylene blue. The porous structure was prepared using polymeric particles as sacrificial templates, which were synthesized by large-scale dispersion polymerization. An in-depth study was performed to characterize the..... More

         Cited By 1
Casting/Solidification/Heat Treatment
585 Microstructure and Mechanical Properties of Inconel 625 Alloy on Low Carbon Steel by Heat Treatment after Overlay Welding
저합금강의 인코넬 625 육성용접 후 열처리에 따른 미세조직 및 기계적 특성
Seungpil Kim, Jaeho Jang, Jungsoo Kim, Byung Jun Kim, Keun Yong Sohn, Dae-Geun Nam
김승필, 장재호, 김정수, 김병준, 손근용, 남대근
Korean J. Met. Mater. 2016;54(8):585-591.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.585
Overlay welding technique is one of methods used to improve metal mechanical properties such as strength, toughness and corrosion resistance. Generally, Inconel 625 alloy is used for overlay welding layer on low carbon steels for economic consideration. However, the method produces some problems in the microstructure of the cast structure... More
         Cited By 1
Smelting & Refining
592 Solvent Extraction of Pr and Nd from Chloride Solution by Mixtures of Acidic Extractants and LIX 63
Yang Liu, Ho Seok Jeon, Man Seung Lee
Korean J. Met. Mater. 2016;54(8):592-597.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.592

Mixtures of acidic extractants and LIX 63 were employed to improve the extraction efficiency of Pr and Nd from chloride solutions. The effect of the composition of the extractant mixtures has been studied. The order of metal extraction by single acidic extractant was D2EHPA > PC88A > Cyanex 272 >..... More

         Cited By 3
Electronic Materials
598 Effect of Sawing Velocity Variation on Chipping Damage of Semiconductor Wafers with Different Thicknesses
다이싱 속도 변화가 두께가 차별화된 반도체 웨이퍼의 칩핑 손상에 미치는 영향
Seong-Min Lee
Korean J. Met. Mater. 2016;54(8):598-604.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.598

This work details how the sawing velocity influences the chipping damage of semiconductor wafers with different thicknesses during wafer separation. The experimental result shows that at a sawing velocity higher than 60000 rpm, in thinner wafers the magnitude of chipping damage more strongly depends on the revolving velocity of the..... More

         Cited By 2
605 Enhanced Optical and Electrical Properties of TiO2 Buffered IGZO/TiO2 Bi-Layered Films
Hyun-Joo Moon, Daeil Kim
Korean J. Met. Mater. 2016;54(8):605-608.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.605

In and Ga doped ZnO (IGZO, 100-nm thick) thin films were deposited by radio frequency magnetron sputtering without intentional substrate heating on a bare glass substrate and a TiO2-deposited glass substrate to determine the effect of the thickness of a thin TiO2 buffer layer on the structural, optical, and electrical..... More

         Cited By 1
Optical Devices & Energy Materials
609 Synthesis and Photoluminescence Studies of ZnO Films Using Vapor Phase Transport Combined With Rapid Heating
Iksoo Ji, Jae-Young Leem
Korean J. Met. Mater. 2016;54(8):609-614.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.609

The vapor phase transport (VPT) process is usually used for the growth of one-dimensional nanostructures rather than for film deposition. In this study, for the first time, we report on the fabrication and optical propeties of ZnO film produced by VPT combined with rapid heating. The X-ray diffraction results showed..... More

615 Properties of a Counter Electrode with Nickel Silicides in a Dye Sensitized Solar Cell
니켈실리사이드 상대전극을 이용한 염료감응형 태양전지의 물성 연구
Kwangbae Kim, Yunyoung Noh, Minkyoung Choi, Ohsung Song
김광배, 노윤영, 최민경, 송오성
Korean J. Met. Mater. 2016;54(8):615-620.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.615

Nickel silicide was used as a counter electrode to replace the Pt catalytic layer of a dye-sensitized solar cell (DSSC) device. 50 nm Si/ 50 nm Ni was formed on glass or quartz by sputtering, and nickel silicides were formed by vacuum heat treatments at 450 and 800 ℃ for..... More

         Cited By 1
Material Analysis & Characterization
621 Study of Water Resistance of Fe2O3 Doped P2O5–ZnO–Bi2O3 Sealing Glass System
Moon Kyung Hwang, Il Gu Kim, Bong Ki Ryu
Korean J. Met. Mater. 2016;54(8):621-625.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.621

In order to strengthen the structure of the glass and ultimately improve its water resistance, P2O5–ZnO–Bi2O3 was doped with Fe2O3, which generated Fe ions in the phosphate-based glass. These ions constitute (P2O7)−4 groups within the glass network. Structural analysis using Fourier transfer infrared spectroscopy indicated that P-O-P and Bi-O-P bonds..... More

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