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Master Sintering Curve를 이용한 분말 사출 성형 된 STS316L과 STS17-4PH의 입자 크기에 따른 소결 특성 연구

Title
Master Sintering Curve를 이용한 분말 사출 성형 된 STS316L과 STS17-4PH의 입자 크기에 따른 소결 특성 연구
Authors
박동용
Date Issued
2011
Publisher
포항공과대학교
Abstract
In rapidly evolving powder injection molding technology, the wideprevalence of various microstructures demands the powders of smaller particle sizes. The effects of particle sizes on the sintering behavior are critical to not only shape retention of microstructures but also their mechanical properties. This thesis investigates the effects of three different particle sizes on the sintering behavior of the 316L stainless steel (STS316L) and 17-4PH stainless steel (STS17-4PH) samples, prepared by powder injection molding, using the theory of master sintering curve. For this purpose, the STS316L and STS17-4PH powders of three different mean particle sizes, i.e., 3, 4, and 8 μm, has been produced. The samples for the dilatometry experiment have been prepared through powder-binder mixing, injection molding, and solvent and thermal debinding. Dilatometry experiments have been carried out on the samples in a H2 atmosphere at three different heating rates of 3, 6, and 10 °C/min. The shrinkage data obtained by dilatometry experiments has been analyzed to understand the densification and the sintering behaviors in terms of particles sizes and heating rates. Master sintering curve (MSC) model has been used to quantify the effects of particles sizes.
URI
http://postech.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000001095348
http://oasis.postech.ac.kr/handle/2014.oak/1230
Article Type
Thesis
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