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Domain Wall Motions in a Near-Morphotropic Pb(Zr,Ti)O3 Under Mechanical Stress Observed by In Situ Piezoresponse Force Microscopy
Kwanlae Kim
Korean J. Met. Mater. 2019;57(1):38-42.   Published online 2018 Dec 14
DOI: https://doi.org/10.3365/KJMM.2019.57.1.38

Many important material properties of ferroelectric ceramics such as piezoelectric coefficient and hysteresis curve are governed by domain structures and their evolution processes. In the present work, domain wall motions in a near-morphotropic Pb(Zr,Ti)O3 under an external compressive stress were observed using in situ piezoresponse force microscopy (PFM). This specific..... More

Effect of MgO Addition on the Monoclinic to Tetragonal Transition of ZrO<sub>2</sub> Fabricated by High Energy Ball Milling
Ashutosh Sharma, Byungmin Ahn
Korean J. Met. Mater. 2018;56(10):718-726.   Published online 2018 Oct 5
DOI: https://doi.org/10.3365/KJMM.2018.56.10.718

In this work, we studied the formation of partially stabilized zirconia by a high energy ball milling (HEBM) approach. Zirconia powder was mixed with 8 mol% MgO and the powder mixture was milled for 10 hours. The structural and morphological evolutions of the powder particles were studied using X-ray diffraction..... More

Evaluations of Hydrogen Permeation on Ni-SCYb Nano-Composites Membrane by Sol-Gel Methods
Min Gyeom Kim, Tae Whan Hong
Korean J. Met. Mater. 2018;56(5):406-411.   Published online 2018 May 8
DOI: https://doi.org/10.3365/KJMM.2018.56.5.406

Industrially meaningful hydrogen production process from mixture or syngas certainly must have a cooling process, which is typically pressure swing adsorption (PSA). However, the PSA process involves an exothermic reaction during adsorption. Recently, hydrogen separation research has been in progress in order to develop a cooling process to minimize or..... More

Corrosion & Surface Treatment
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

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