Improved Adhesion of Metal Electrode Layer on Si₃N₄ Substrate through an All-Wet Process

Kim, Danbi,Eom, Nu Si A,Kim, Jiwon,Lee, Kyu Hyoung,Park, Sung Heum,Lee, Ju Ho,Chao, Yong-Ho,Lim, Jae-Hong Electrochemical Society 2019 ECS journal of solid state science and technology Vol.8 No.2

<P>Electroless deposition requires preliminary surface treatment to effectively adsorb a metal electrode layer onto a ceramic substrate. Herein, a simple surface treatment using an all-wet process was performed to achieve adhesion stability between a Si<SUB>3</SUB>N<SUB>4</SUB> substrate and Ni film. The method involved deposition of an interfacial Pd-TiO<SUB>2</SUB> buffer between the two layers. Surface pretreatment via silanization was initially performed to improve surface wettability, thereby enhancing uniform deposition of Pd-TiO<SUB>2</SUB>. Subsequently, a thin Ni layer was directly deposited onto the Pd-TiO<SUB>2</SUB> layer without necessitating sensitization or activation. The synthesized Ni/Pd-TiO<SUB>2</SUB>/Si<SUB>3</SUB>N<SUB>4</SUB> heat sink exhibited excellent adhesion property in the cross-hatch, scratch, and thermal shock tests. The mechanism of adhesion enhancement involved chemical bonding of Pd-TiO<SUB>2</SUB> with the self-assembled monolayer on the substrate and reduced internal stress due to removal of residual hydrogen between the layers of the heat sink. Thus, the fabricated heat sink has a promising application in electronic devices operated at high temperatures.</P>

부산시 중심지체계 설정에 관한 연구

임채성,이광국,윤상복,윤시운 東亞大學校 建設技術硏究所 2000 硏究論文集 Vol.24 No.2

This study was aimed to establish the system of centers and to offer the viewpoint to studies and policies of urban spatial structure while analyzing their characteristics in Busan. The results of this study were summarized as followed : According to the result about the establishment of the system of centers, 2 Centers, 4 Sub-Centers and 5 low-lanking centers were identified. This is a little different with 2 Centers, 6 Sub-Centers, 2 District-Centers written in 「Busan Master Plan toward 2011's」. In other words, the system of centers in Busan was represented more subdivided and abundant than that of 「Busan Master Plan toward 2011's」 and these centers had both polycentric and multi-nuclei characteristics. With premise that the urban structure is being changed on the basis of the change of a period, society and an economy in the future to establish effective system of centers, it is advisable that the establishment of the system of centers is to readjust by stage in the process of planning.

칠곡군 관광상품 개발방안에 관한 연구

임시룡 東國專門大學 1998 金龜論叢 Vol.6 No.1

일반적으로 관광상품은 실용적 가치나 장식적 가치, 학술적 가치 등을 고려하여 구매하기도 하지만 가장 큰 목적은 관광대상지의 방문을 기념할 목적으로 구매되는 것이다. 따라서 관광상품은 기념대상의 특징적 이미지를 가장 잘 나타내어야 함은 몰론 제품의 품질, 실용성파 장식성, 소비자의 기호, 가격, 관광상품으로서의 적절한 부피나 무게 등이 함께 고려되어야 한다. 물론 총체적으로 불 때 우리나라의 관광기념품은 대개가 관광지마다의 특징적이고 고유한 이미지를 담은 기념품이 없고, 어느 관광지에서나 제품의 종류가 동일하여 기념적인 가치가 상실됨에 따라 구매의욕을 유발시키지 못하는 실정이다. 관광상품은 기념적인 것을 제외하고서라도 대상의 홍보적인 역할비중도 매우 큰 것임을 감안할 때 관광상품을 통한 지역 또는 대상 관광지의 지속적인 홍보효과는 물론 관광상품 자체를 명물화가 가능하며, 이것은 또다른 수요와 자원의 창출, 공예산업의 활성화, 기술자원의 보전, 등을 가능하게 한다. 이러한 맥락에서 본 연구는 칠곡군의 관광대상지를 방문 진단하여 상품화를 위한 가치나 향후의 수요가능성, 특징적 이미지 등을 조사하여 상품화를 위한 몇 가지의 방안을 제시하며, 또한 지역의 이미지 상승을 위해 칠곡군의 상징물을 이용한 관내 관공서의 외래방문객에 대한 방문기념품 개발안을 제시한다.

동계 난방시 구조체 축열 공조시스템의 축·방열 특성에 관한 연구

임지훈,이시환,차영호,정광섭,이정재 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1

It is the plan that storage gets energy done by in structure with what thermal storage of structure changes only supply air duct among the existing HVAC system, and a basic principle coordinates the damper that it was installed makeup air in supply air duct like former HVAC system to an inside at supply and a night by day, and do makeup air supply with in ceiling space of thermal storage of structure HVAC system. This thermal storage of structure HVAC system uses the existing utility system, and energy saving can get structure of building done with energy storage, before air conditioning and peak load cut getting day heat load done.

본딩 웨이퍼 검사를 위한 모델링 연구

임영환,양시은,장동영,안효석,홍석기 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

본 논문에서는 레이저 빔 투과를 이용한 본딩 웨이퍼 검사 방법을 제안하고 검사 장치를 설계 구현하였다. 1064nm파장에서의 정상웨이퍼를 일정한 비율로 투과하였다. 본딩 불량으로 인한 웨이퍼의 기공은 두께에 따라 투과율이 현저하게 변화하여 기공 부분을 검출하였다. 이러한 기공은 두께의 변화가 있으며 광량의 변화하는 부분이 에어갭으로 인식 카메라로 쉽게 구분이 가능하였다.

부산시 중심지체계 설정에 관한 연구

임채성,이광국,윤상복,윤시운 동아대학교 건설기술연구소 2000 硏究報告 Vol.24 No.2

This study was aimed to establish the system of centers and to offer the viewpoint to studies and policies of urban spatial structure while analyzing their characteristics in Busan. The results of this study were summarized as followed : According to the result about establishment of the system of centers, 2 Centers, 4 Sub-Centers and 5 low-lanking centers were identified. This is a little different with 2 Centers, 6 Sub-Centers, 2 District-Centers written in 「Busan Master Plan toward 2011's」. In other words, the system of centers in Busan was represented more subdevided and abundant than that of 「Busan Master Plan toward 2011's」 and these centers had both polycentric and multi-nuclei characteristics. With premise that the urban structure is being changed on the basis of the change of a period, society and economy in the future to establish effective system of centers, it is advisable that the establishment of the system of centers is to readjust by stage in the process of planning.

배기 저항의 능동제어를 통한 배기 시스템의 최적화에 관한 연구

임경빈,류봉조,이규섭,김상덕,송시영,이상훈 한밭대학교 생산기반기술연구소 2002 생산기반기술연구소 논문집 Vol.2 No.1

Automobile exhaust system has difficulty in concentrating contrary technology, which has diminishing effect of maximum exhaust noises and mininum exhaust pressure for output efficiency improvement into on system. This thesis has the purpose in management of basis study for silence and output efficiency improvement which can be satisfy low noises and low exhaust pressure at the same time through maximizing engine efficiency dealing with activity as the condition of engine controlling exhaust impedance actively. In this thesis, we obtained positive result by making experiment high efficiency exhaust induced shaped silencer in order to satisfy contrary matters which device the improvement of engine efficiency and low perception of exhaust noises at the same time. That is, we proved that it has more excellent in low perceiving noises of exhaust system and output improving efficiency than existing muffler by active controlling the exhaust impedance.

금속-도재 수복물에서 비귀금속 합금의 재사용에 따른 결합강도에 관한 연구

임시덕,이은경,장기환 한국위생과학회 2001 한국위생과학회지 Vol.7 No.2

치과용 비귀금속 합금 중 Verabond와 RecilliumⅢ,Ⅴ를 사용하여, 새 금속만 사용한 group(Ver-1, Rex3-1, Rex5-1)과 재사용한 group(Ver-2, Rex3-2, Rex5-2)의 경도측정을 한 결과 새금속만을 사용한 group에서는 Ver-1이 경도측정치가 가장 높았으며, 재사용한 group에서는 Rex5-2가 가장 높은 경도 측정치를 나타내었고 Rex3에서는 Rex3-1과 Rex3-2간의 경도 차이는 없었다. Verabond와 RexolloumⅢ,Ⅴ를 사용한 것과, 새 금속만을 사용하여 Vita Omega Porcelain을 올려서 소성하고, 금속과 도재간의 결합강도를 측정 한 것과, 한번 주조된 비귀금속 합금에 50%의 새로운 합금을 사용하여 Vita Omega Porcelain을 올려서 소성하고, 금속과 도재간의 결합강도를 측정한 결과 재 사용한 금속 중 Rex5-1이 금속과 도재간의 결합강도가 가장 좋은 것으로 나타났고, 주조된 합금에 새 금속 50%를 섞은 group에서는 Rex5-2가 결함강도가 가장 낮은 것으로 나타났다. 그러나 Ver-1과 Ver-2는 금속과 도재간의 결합강도는 큰 차이점이 없는 것으로 보인다. The hardness of non-precious dental alloy was measured using Verabond and Rexillium Ⅲ,Ⅴ, The dental alloy was group into a new alloy group (Ver-1, Rex5-1) and used alloy (Ver-2, Rex5-2). As a result, Ver-1 showed the highest hardness value in a new alloy group. and Rex5-2 showed the highest hardness value in a used alloy group. However, Rex3-1 and Rex3-2 did not show any difference in hardness. The bonding strength between alloys used Verabond and Rexillium Ⅲ,Ⅴ was tested; The bonding strength between porcelain and a new alloy, which was firing after build up weth Vita Omega porcelain; was tested; Also, the bonding strength between porcelain and metal, which was casted and firing after build up with vita Omega pocelain was tested. I this case, the casted alloy was mixed with a new alloy by hay in weight. As a result, Rex5-1 yielded the highest strength among the used alloy group. Rex5-2 was the lowest in bonding strength among the alloy mixed with casted alloy and a new alloy by hay in weight. On the other hand, Ver-1 and Ver-2 did not show apparent difference in bounding strength.

표면위에 분사되는 원형 충돌제트의 열전달에 관한 실험적 연구

임경빈,최상경,송시영 한밭대학교 생산기반기술연구소 2001 생산기반기술연구소 논문집 Vol.1 No.1

The heat transfer characteristics on curved surfaces with an obliquely impinging circular jet were studied. In this study, the flat plate and hemispherically convex and concave surfaces were used. The Reynolds number used was Re=23,000. The nozzle-to-surface distance was L/d=4, 6 and 8. The jet angle was α=0˚ and 30˚. As the results of this study, the Nusselt number at the stagnation point decreases as the jet angle increases and has the maximum value for L/d=6. The secondary maximum Nusselt numbers in the downstream direction occur at long distances from the stagnation point as the jet angle increases or the nozzle-to-surface distance decreases. The Nusselt number distributions exhibit a displacement of the maximum heat transfer from the stagnation point to the upstream direction.

주방환기 시스템의 공기 급기구의 위치에 따른 성능평가

임경빈,송시영,이찬호 한밭대학교 생산기반기술연구소 2003 생산기반기술연구소 논문집 Vol.3 No.1

The purpose of this study is to investigate the performance evaluation of indoor diffusion rate of surplus heat generated from gas range and concentration distribution of combustion gas by position change of air- diffuser and range-hood with separating plate. A numerical analysis is performed with four cases of this ventilation system for kitchen. The results showed that thermal and flow distribution can be more effective, when air supply diffuser is located at middle position. Also, Comparisons of Indoor Air Quality(IAQ) are made between using separating plate and not using, IAQ was improved in case of using separating plate and also, kitchen exhaust hood concentration distribution was improved about 30%