کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
793190 902385 2013 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Temperature control during Spark Plasma Sintering and application to up-scaling and complex shaping
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Temperature control during Spark Plasma Sintering and application to up-scaling and complex shaping
چکیده انگلیسی

The determination and the homogeneity of the sample temperature during consolidation of powders by Spark Plasma Sintering (SPS) are addressed. Densifications were carried out in three different facilities differing by their constructors and their size. A structural transformation activated in a TiAl alloy was used as a marker of the sample temperature and finite element modeling were performed to evaluate the temperature at each point of the set-up. A good agreement between experimental and simulated data is exhibited. Alloys with identical microstructures were sintered and the homogeneity of the microstructure was better in the largest machines or when the sample was isolated by alumina disks.Large specimens with a diameter of 100 mm and a height of 60 mm were sintered, with the aim to achieve full densification and good microstructural control. On the basis of this temperature mastering, samples with complex shape were successfully densified. SEM post mortem observations confirmed the absence of porosities, and the expected microstructure as predicted by FEM calculations.

Figure optionsDownload as PowerPoint slideHighlights
► Control of the temperature during Spark Plasma Sintering in three different facilities.
► We use a phase transformation as a marker of the temperature.
► Finite Element Simulations are used as a predictive tool.
► We sinter large specimens with controlled microstructure.
► We sinter complex shapes with controlled microstructure.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 213, Issue 2, February 2013, Pages 269–278
نویسندگان
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