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Fe80 B12 Si8 비정질 합금에 Cr 첨가가 자기적 성질에 미치는 영향
신찬수,송진태 대한금속재료학회(대한금속학회) 1986 대한금속·재료학회지 Vol.24 No.11
The effect of Cr element and heat treatment on the physical and magnetic properties of Fe_(80)B_(12)Si_8 (at.%) amorphous alloy which has a high saturation magnetization and a low core loss was investigated in this study. The (Fe_(1-x)Cr_x)_(80)B_(12)Si_8 (x= 0-0.10) amorphous allay ribbons were fabricated by single roller method and annealed for 20 minutes at various temperatures below the crystallization temperature in Ar gas atmosphere. With increasing Cr contents, it was found that crystallization temperature increased from 472℃ to 490℃ and soft magnetic properties were improved. The coercive force decreased and the maximum permeability increased with increasing Cr contents. These improvements may be attributed to the decreasing of magnetostriction by Cr addition to Fe_(80)B_(12)Si_8 alloy. The annealing treatment improved the soft magnetic properties of Fe_(1-x)Cr_x)_(80)B_(12)Si_8 amorphous alloys and the optimum annealing temperature was 60℃ lower than the crystallization temperature. Coercive force and high frequency magnetic properties of (Fe_(0.96)Cr_(0.04))_(80)B_(12)Si_8 amorphous alloy that was annealed at 425℃ for 20 minutes were comparable to a zero magnetostrictive Co-based alloy.
급성 골수성 백혈병(M6)에 합병된 중추성 요붕증 1 예
김성연,조보연,이홍규,고창순,민헌기,김병국,김노경,신찬수,이명식,강덕현,조종태 대한내과학회 1989 대한내과학회지 Vol.37 No.2
Leukemia is known to be an extremely rare cause of diabetes insipidus. We report a case of diabetes insipidus as a complication of leukemia. An 18 year-old man was admitted because of polyuria polydipsia and fever. Bone marrow aspiration and biopsy revealed the diagnosis of acute erythroleukemia (AML, M6). On the water deprivation test, the diabetes insipidus was confirmed to be of the central type. He was managed with intranasal vasopressin for diabetes insipidus with good response. Induction chemotherapy was administered without response, and the patient died of septicemia and respiratory failure 2 months after initial diagnosis. A short review of the literature related to this subject is also presented.