http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
PEO 코팅 처리된 AZ91 합금의 산화층에 미치는 후-열처리의 영향
김용민(Y. M. Kim),고영건(Y. G. Ko),신동혁(D. H. Shin) 한국소성가공학회 2009 한국소성가공학회 학술대회 논문집 Vol.2009 No.10
The influence of the subsequent-annealing (SA) treatment on plasma electrolytic oxidation (PEO)-treated Mg-based alloy was investigated and the dependence of the dehydration reaction on the SA temperature was also studied. For this purpose, a series of the SA treatments were carried out on the coated samples at two different temperatures, i. e. 423 and 523 K for 10 h. In contrast to the sample without SA treatment, the sample annealed at 523 K exhibited a significant difference in term of surface morphology since the MgO content in the oxide layer increased with increasing SA temperature. With increasing SA temperature, the dehydration of Mg(OH)₂ led to the increase in the relative amount of the MgO, which was a hard phase. From the nano-indentation results, the applied loads of the samples were seen to increase as SA temperature increased. However, the corrosion resistance of the sample annealed at 423 K was higher than that of the samples annealed at 523 K.
김용민(Y. M. Kim),이병두(B. D. Lee),신용권(Y. G. Shin),정명묵(M. M. Jeong),박성혁(S. H. Park) 한국도시철도학회 2014 한국도시철도학회논문집 Vol.2 No.1
The service life of the urban rail car was uniformly set up to twenty five years before the revision of the related laws in March 19, 2009. However, as the rail car design, manufacturing technologies and maintenance skills have improved, it was revised as its designed service life, listed on the manufacturing specification of the urban rail car and according to a precise diagnosis result, it can be extended up to Maximum fifteen years. It is prescribed that the use of extension should be determined by the precise diagnosis guidelines of the urban rail car. The detailed process and methods to determine the use of extension are as follows. After the inspection of its appearance, dimensions, defects, and corrosion is done, the worst condition is selected for the heat deterioration about high-voltage power lines / auxiliary power cables. Then, the actual moving stress is measured through structure analysis. By the evaluation of remaining life based on this data, the use of extension can be predicted. This study, according to the related laws, analyzes the cases of the precise diagnosis and the evaluation of remaining life and predicts the service life for Seoul Metro line No.2 rail cars.
안일중(I . J . Ahn),박용수(Y . S . Park),김종오(J . O . Kim),김용민(Y . M . Kim) 대한산부인과학회 1998 Obstetrics & Gynecology Science Vol.41 No.12
A 29-years old womon visited for high MS AFP level checked at private clinic and we performed amniocentesis for amniotic fluid AFP and phenotyping. The phenotype of the fetus was 47 XXY. After genetic counseling, the patient and her husband determined to take pregnancy termination.