The Effect of Mo Addition on Oxygen Vacancies in the Oxide Scale of Ferritic Stainless Steel for SOFC Interconnects

윤대원,정희원,서성문,이형수,유영수 한국부식방식학회 2024 Corrosion Science and Technology Vol.23 No.1

The concentration and diffusion coefficient of oxide ion vacancies in the oxide scale formed on Fe-22Cr-0.5Mn ferritic stainless steel with and without molybdenum (Mo) was measured at 800 °C by the electrochemical polarization method. After pre-oxidation for 100 h in ambient air at 800 °C, the oxide scale on one side was completely removed with sandpaper. A YSZ plate was placed on the side where the oxide scale remained. Platinum (Pt) meshes were attached on the top of the YSZ plate and the side where the oxide scale was removed. Changes in electrical current were measured after applying an electrical potential through Pt wires welded to the Pt meshes. The results were interpreted by solving the diffusion equation. The diffusion coefficient and concentration of oxide ion vacancy decreased by 30% and 70% in the specimen with Mo, respectively, compared to the specimen without Mo. The oxide ion vacancy concentration of chromia decreased due to the addition of Mo.

19세기 변란 참가층의 사회적 관계망과 존재양태

윤대원 서울대학교 규장각한국학연구원 2012 한국문화 Vol.60 No.-

This study examined the participants' social networks and their existence aspect of two 19th-century representative upheavals(Haeseu(海西)․Youngnamin(嶺南人) upheavals and Reepiljeran(李弼濟亂)). First we could confirm the fact that ‘sarando’(思亂徒) is widely distributed in the late Joseon contrycide society. they were a poor scholar(貧士․寒儒) excluded or marginalized from the central and provincial power relations in the late Joseon period. Discussing Jeonggamrok(鄭鑑錄) kind of prophecy and divination, current events, they were able to determine the consciousness of kind with each other. Based on this recognizing they confered upheaval and formed a social network using blood and territorial relationship such as the primarily social relationship and Jeonggamrok and fengshui(風水) such as coronary. This network contains a hidden hope of the peoples but there was no prospect for the new society. Because networks could have a high scalability and voluntary loyalty. Despite these limitations we can see some meaningful facts, that is the evolution of the network. Leaders organized 'Nanbonggye'(難逢契) or ‘Samseongdanggye’(三聲堂契), this was not the existing ‘gye’(契) namely 'Donggye'(洞契) or ‘Hyodogye’(鄕徒契) but was a kind of the organization that contained several provinces. This was one of the reasons why 19th century upheaval was able to be deployed beyond one area. The other one is the expansion of the new communication space. The market and inn developed in the late Joseon period, was functions as the communication space or the main stronghold to communicate gather information and comrades. But Above all, the noted fact is a behavior patterns that upheaval participants concludes relationship to each other and a social phenomenon that allow such a thing. In other words is the fact that the groups have their own behavior in the form of communication was widely distributed in contrycide society, as well as the autonomous space they could communicate with each other was exteded in the late Joseon period. This study examined the participants' social networks and their existence aspect of two 19th-century representative upheavals(Haeseu(海西)․Youngnamin(嶺南人) upheavals and Reepiljeran(李弼濟亂)). First we could confirm the fact that ‘sarando’(思亂徒) is widely distributed in the late Joseon contrycide society. they were a poor scholar(貧士․寒儒) excluded or marginalized from the central and provincial power relations in the late Joseon period. Discussing Jeonggamrok(鄭鑑錄) kind of prophecy and divination, current events, they were able to determine the consciousness of kind with each other. Based on this recognizing they confered upheaval and formed a social network using blood and territorial relationship such as the primarily social relationship and Jeonggamrok and fengshui(風水) such as coronary. This network contains a hidden hope of the peoples but there was no prospect for the new society. Because networks could have a high scalability and voluntary loyalty. Despite these limitations we can see some meaningful facts, that is the evolution of the network. Leaders organized 'Nanbonggye'(難逢契) or ‘Samseongdanggye’(三聲堂契), this was not the existing ‘gye’(契) namely 'Donggye'(洞契) or ‘Hyodogye’(鄕徒契) but was a kind of the organization that contained several provinces. This was one of the reasons why 19th century upheaval was able to be deployed beyond one area. The other one is the expansion of the new communication space. The market and inn developed in the late Joseon period, was functions as the communication space or the main stronghold to communicate gather information and comrades. But Above all, the noted fact is a behavior patterns that upheaval participants concludes relationship to each other and a social phenomenon that allow such a thing. In other words is the fact that the groups have their own behavior in the form of communication was widely distributed in contrycide society, as well as the autonomous space they could communicate with each other was exteded in the late Joseon period.

일제의 한국병합과 ‘한국황실처분’의 정략적 함의

윤대원 서울대학교 규장각한국학연구원 2017 규장각 Vol.50 No.-

이 연구는 병합 후 한국의 국가호칭 및 국왕호칭 문제를 두고 일어난 통감부와 일본 정부 사이의 갈등의 배경과 그 해결이 갖는 정략적 함의를 밝히는데 있다. 일본은 1910년 7월 8일 내각회의에서 병합 후 한국의 국호를 조선이라 하고 한국황실을 공족으로 삼고 황족의 예로 대우하기로 했다. 이 결의는 8월 16일 데라우치와 이완용의 비밀 회담에서 병합 설득의 명분을 내세운 이완용의 요구에 의해 국호는 조선으로, 한국황실은 왕공족으로 칭하기로 했다. 일본이 자신들의 방침을 바꾸면서까지 이완용의 제의를 받아들인 것은 쉽게 다가온 병합의 기회를 놓치지 않기 위해서였다. 그런데 병합 후 한국황제를 왕으로 임명하는 왕 책립의 형식 및 칙사의 성격 그리고 이왕가의 감독권 문제로 통감부와 궁내성 사이에 의견 충돌이 일어났다. 데라우치는 병합에 대한 회유와 한국황실의 정치 활동 단절을 명분으로 내세우며 왕 책립의 예우를 강조했다. 그 배경에는 병합 후 조선총독이 이왕가를 직접 감독하려는 데라우치의 정략적 함의가 있었다. 이 때문에 병합 후 한국은 식민지이면서도 독립을 표상하는 국호와 왕실이 존재하는 독특한 식민지가 됐다.

학교수학에서 경험적 일반화와 이론적 일반화의 고찰

윤대원,김동근 한국수학교육학회 2009 수학교육 프로시딩 Vol.43 No.-

대한민국임시정부의 재건과 관내 민족전선통일운동

윤대원 역사학연구소 2002 역사 연구 Vol.- No.10

[우리는 미국을 어떻게 보아 왔나 2] 일제시기 친미외교론과 대미인식

윤대원 내일을 여는 역사 2003 내일을 여는 역사 Vol.12 No.-

한말 일제 초기 政體論의 논의 과정과 民主共和制의 수용

尹大遠 중국근현대사학회 2001 중국현대사연구 Vol.12 No.-

[사실, 이렇게 본다 2] 좌우연합을 지향한 대한민국 임시정부

윤대원 내일을 여는 역사 2004 내일을 여는 역사 Vol.18 No.-

대한민국임시정부 연구, 이제는 사실과 객관성을

윤대원 재단법인 내일을여는역사재단 2007 내일을 여는 역사 Vol.28 No.-

조작된 「朝鮮總督報告 韓國倂合始末」

윤대원 서울대학교 규장각한국학연구원 2010 한국문화 Vol.52 No.-

1910, November 7th, Korea governor Derauchi-masadake(寺内正毅) reported 「Korea annexation beginning and end」 (韓國倂合始末) arranged the contracting process of ‘Korea-Japan annexation treaty’ to the home country government. He emphasized the annexation treaty ‘consensual treaty’ being in the report. Especially in August 22council in the Royal presence, Emperor Soonjong(純宗) wrote directly a his name in plenipotentiary letter of attorney and he did to make Great Seal press, pleasantly accepted a treaty, he emphasized. However, If you examine 「Korea annexation beginning and」 endcarefully, the main subject of the report with fact is different on a large scale. First, the annexation treaty violated the treaty contracting process which was decided by domestic law. Japan to avoid a Cabinet meeting in the treaty did not receive the consent of the Cabinet. Moreover, Japan did not keep their enforced procedures. Namely since 1907 Korean Empire had to meet with the Resident-general's approval about the law or the important agenda. But Japan fabricated this process. Moreover,Resident-general bribed Grand Chamberlain(侍宗院卿) Yun Deok-young(尹德榮) with money. In return Yun Deok-young stole Great Seal(國璽) and stamped on the plenipotentiary letter of attorney. This is an obvious illegal. In conclusion Resident-general Derauchi distorted, fabricated 「The Korea-Japan annexation beginning and end」 to hide the illegality of a treaty contracting and exaggerate his merits