• 한국자기학회:학술대회 개요집
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• 한국자기학회 2014년도 임시총회 및 하계학술연구발표회
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• pp.96-96
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• 2014

• 인포메이션 디스플레이
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• 제17권3호
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• pp.44-49
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• 2016

• E2M - 전기 전자와 첨단 소재
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• 제26권1호
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• pp.31-38
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• 2013

• 한국진공학회:학술대회논문집
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• 한국진공학회 1992년도 제3회 학술발표회 논문개요집
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• pp.50-50
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• 1992

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2009년도 추계학술대회 논문집
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• pp.185-189
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• 2009

Recently, ultra high strength products can be manufactured by the hot press forming process of Boron steel in automotive and electronics industries. In order to get high strength, the hot press forming should be accompanied by quenching process inducing phase transformation. There are several types of the hot press forming processes according to the quenching method, water quenching and die quenching, etc. In the study, the process was numerically and physically simulated to compare the two types of quenching processes, and then the strength, hardness and dimensions of the products were compared with try-outs.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2007년도 춘계학술대회A
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• pp.1355-1360
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• 2007

The use of high strength steels are gradually increasing to reduce the weight of automobile to improve the environmental problems and collision safety. To encounter the traditional disadvantages of high strength steels like as a poor formability and high springback, hot press forming has been developed. By this method, the strength of steel sheet is increased about three times of original one through die quenching process. In order to the design of hot press forming tools by using numerical simulation, the knowledge of mechanical and microstructural characteristics are required. This study show the mechanical and microstructural characteristics of a high strength boron-alloyed steel according to the various quenching conditions.

• Nuclear Engineering and Technology
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• 제5권2호
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• pp.94-102
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• 1973

원주상 재결합 영역에 있어서 전리함의 포화특성을 이론적으로 검토하고, 보론 피복 원통형 전리한을 설계, 제작하여 내부에 질소 또는 헬륨을 760mmHg와 380mmHg로 충전시켜서 실험적임 측정을 하였다. 해석적임 방법으로 도출한 collection efficiency의 식은 실험결과와 잘 일치하였다. 이 결과를 이용하면 보론을 피복한 전리함의 포화특성을 실험적인 측정 업이 설계치에 의한 이론적인 계산만으로 예측할 수 있다.

• 대한전자공학회논문지
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• 제18권1호
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• pp.7-19
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• 1981

실리콘 양극산화방법으로 실리콘에서의 불순물 분포를 측정하였다. 전해액으로 Ethylene Glycol-KNO3(0.04N)을 사용하였고, 200V의 전압을 가했을 때 한번의 양극산화에 의하여 삭감되는 실리콘 두께는 웨이퍼 타이프에 관계없이 460±40A이다. Predeposition후의 보론과 아세닉의 분포를 구하였고 이 분포에 의하여 불순물 농도에 따른 확산계수를 계산하였다. 또한 npn트란지스터 구조에서 아세닉 에미터와 브론 베이스간의 상호작용에 의한 베이스 pull-in 현상을 관찰하였다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2001년도 춘계학술대회 논문집
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• pp.802-806
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• 2001

Chrome-molybden steel or chrome steel for machine structural use been shown to excellent hardenability adding boron of a small amount at low carbon steel. In the country boron steel has been used widely high strength volt and wear resistant components of construction equipment. SEM results showed classical fatigue fractures, consistent with surface crack initiation. The speciments were cycled using under load controlled rotary bending fatigue tests. In this study, the fatigue crack initiation as well as the fatigue crack growth behavior and the fracture mechanism were investigated through observations of fracture surface boron steel(AISI 51B20).

• 상하수도학회지
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• 제25권6호
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• pp.917-922
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• 2011

Adsorption characteristics of boron on activated carbon was investigated in order to evaluate the use of activated carbon for the removal of boron in desalination processes using SWRO. Boron was removed ranging from 54~60% when the concentration of activated carbon was 1,000 mg/L in 6 hours under the initial boron concentration of 5 mg/L. The removal of boron increased by 20~22% with the increase of pH from 5 to 9. Organic matter had adverse effect on the adsorption of boron on activated carbon. Boron removal decreased by 10-12% when EDTA was added at 1 mg/L under 5 mg/L of boron and 200mg/L of activated carbon. In this results, activated carbon would be a good candidate for a pretreatment of desalination processes by SWRO from the view of mitigating the feed boron concentration to RO and meeting the effluent boron concentration without post-treatment after RO.