Yonghun C Suh

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A study was carried out to determine the partial phase diagram for the system Ag-25 wt % Pd-y wt% In with y </= 8 by X-ray powder diffraction and differential thermal analysis. The liquidus and solidus temperatures decreased with increasing indium content up to 8 wt % In for a given 25 wt % Pd. The solvus curve of gamma phase identified as (PdxAg1-x)3 In(More)
Age-hardening characteristics and precipitation behavior of Ag-25%Pd-3%In-1%Zn-0.5%Ir alloy were investigated in detail by means of hardness testing, X-ray diffraction, electron microscopy and resistivity measurement. The solution treating could be accomplished at 980 degrees C and the aging in the temperature range from 950 to 850 degrees C occurred by(More)
Surgical management of mild aortic stenosis coexisting with severe coronary artery disease remains controversial. Direct examination of the aortic root under these circumstances may be decisive. At present, intraoperative assessment of the aortic valve requires an aortic incision which, in itself, may increase the risk of intraoperative complications,(More)
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