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탄탈륨, 니오븀 및 철 첨가에 따른 Ni-Cr 합금의 기계적 성질의 변화

Other Titles
 Influence of addition of Ta, Nb and Fe on mechanical properties of Ni-Cr alloy 
 강유화  ;  이상배  ;  김광만  ;  김경남 
 Journal of the Korean Research Society for Dental Materials (대한치과기재학회지), Vol.40(2) : 111-119, 2013 
Journal Title
 Journal of the Korean Research Society for Dental Materials (대한치과기재학회지) 
Issue Date
Ni-Cr alloy ; tensile strength ; micro hardness ; machinability
The computer aided design/computer aided manufacturing(CAD/CAM)method represents a great advancement over casting technology. However, the poor machinability of Ni-Cr alloy is an obstacle to practical dental application. In this study with the purpose is to develop Ni-Cr alloys for CAD/CAM containing Ta, Nb and Fe with superior properties than commercial products. In order to evaluate of the properties of Ni-Cr alloys containing various amount of Ta, Nt and Fe, tensile strength, 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 whereas Nb and Fe were not effective to enhance mechanical properties. High machinability was showed at proper hardness value of alloys, especially 225.8HV. From the above results, it is considered that 0.7wt% Ta, 3.2wt% Nb and 4.3wt% Fe containing Ni-Cr alloys could be able to use either casting or machining substrate.
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Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
5. Research Institutes (연구소) > Yonsei Dental Devices Testing & Evaluation Center (치과의료기기시험평가센터) > 1. Journal Papers
Yonsei Authors
Kang, Yoo Hwa(강유화)
Kim, Kyoung Nam(김경남)
Kim, Kwang Mahn(김광만) ORCID logo https://orcid.org/0000-0002-5235-0294
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