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논문 786건

Micro hardness test was performed before water storage and aging after 7 days at 37 ℃. In addition, flexural strength, water sorption and solubility tests were performed according to international standard, ISO 10477. All experimental groups showed significant color change in staining solutions when
  • 페이지 10페이지
  • 가격 6,000원
  • 발행일 2019.04.17
  • 파일종류 아크로벳(pdf)
  • 발행기관 대한치과재료학회
  • 저자 양송이, 권지연, 노지수, 박소연, 박하은, 백은지, 임수연, 권재성
micro- Vickers hardness test was used to measure the distribution of hardness on the section of normal to the extrusion direction. The results show that HCAE is able to impose more intensive strains per pass and give rise to higher micro-hardness than ECAE.1. 서론 2. 반통로각압출 (HCAE) 공정 3. HCAE
  • 페이지 8페이지
  • 가격 6,000원
  • 발행일 2019.03.01
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국정밀공학회
  • 저자 김경진, 조현덕
micro-hardness of the oxide coatings were investigated. XRD analysis revealed that the oxides were mainly composed of α-Al₂O₃, γ-Al2O3, and mullite. The proportion of each crystalline phase depended on various electrical parameters, such as duty cycle and frequency. SEM images indicated that the oxi
  • 페이지 8페이지
  • 가격 6,000원
  • 발행일 2019.03.01
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국세라믹학회
  • 저자 Kyung-Su Nam, Jung-In Moon, Jeong-Hwan Song, Dae-Young Lim
micro-hardness, fluoride release, and cuttability were also evaluated. The data were analyzed with one-way ANOVA and independent t-test(p=0.05) using PASW 17.0 (SPSS Inc., Chicago, U.S.A.). The flexural strength of EP was higher than LuxaCore in both light-curing and self-curing methods(p<0.05). The
  • 페이지 8페이지
  • 가격 6,000원
  • 발행일 2019.01.09
  • 파일종류 아크로벳(pdf)
  • 발행기관 대한치과재료학회
  • 저자 김형식, 송부석, 최교창, 이용근, 김경남, 김광만
micro hardness(Hv), surface roughness and wear quantity on the vapor deposited coating layers on the SCM415 steel. As the wear experimental result, the excellence of TiAlN+WC/C multilayer coating has been proven by high micro-hardness, low friction coefficient and wear quantity.ABSTRACT 1. 서론 2.
  • 페이지 7페이지
  • 가격 6,000원
  • 발행일 2019.03.01
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국기계가공학회
  • 저자 장정환, 허철수, 김해지, 김남경, 류성기
hardness, thermal expansion coefficient, XRD analysis and machinability were investigated. X-ray diffraction patterns were noted that new precipitation of gamma prime phase was increased with the increasing Ta content. The tensile strength and micro-hardness were increased with increasing Ta content
  • 페이지 9페이지
  • 가격 6,000원
  • 발행일 2019.04.16
  • 파일종류 아크로벳(pdf)
  • 발행기관 대한치과재료학회
  • 저자 강유화, 이상배, 김광만, 김경남
of anisotropy of the material by micro-indentation method. Themechanical properties vary as a function of depth, from rolling surface towards center.ABSTRACT 1. Introduction 2. Materials and methods 3. Micro-hardness measurement 4. X-ray diffraction 5. Results and discussion 6. Conclusion References
  • 페이지 5페이지
  • 가격 6,000원
  • 발행일 2019.03.01
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국기계가공학회
  • 저자 Gangadhara B. S., Oh-Yang Kwon, Yong-Jun Jang
microstructure such as grain size refinement, randomly multi-oriented microstructure, and nano-sized codeposition of silicon nitride in the TiN matrix. The Ti-Si-N film, contains Si content of ∼7 at.%, showed the micro-hardness value of ∼3400 HK, which was higer than the pure TiN film whose hardness
  • 페이지 6페이지
  • 가격 6,000원
  • 발행일 2019.03.01
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국세라믹학회
  • 저자 박범희, 김정애, 이종영, 김광호
microhardness, and other properties were analyzed in order to know whether best soft magnetic properties could be also obtained in an Fe-Si compressed core with the well-known composition of Fe-6.5% Si. With increasing the silicon content, eddy current loss and hysteresis loss decreased and increase
  • 페이지 5페이지
  • 가격 6,000원
  • 발행일 2019.03.01
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국자기학회
  • 저자 장평우, 이봉한, 최광보
micro-hardness of the Cr-Si-O-N coating was obtained 4507 Hk at the O content of 24.8 at.%. The average friction coefficient of the Cr-Si-O-N coatings was gradually decreased by increasing the O content and the average friction coefficient decreased from 0.37 to 0.25 by increasing the O content. The
  • 페이지 5페이지
  • 가격 6,000원
  • 발행일 2019.03.01
  • 파일종류 아크로벳(pdf)
  • 발행기관 한국표면공학회
  • 저자 이정두, 왕치민, 김광호
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