کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1577714 1514805 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
In situ synthesis and bonding of TiTiAlTiC/Ni functionally graded materials by field-activated pressure-assisted synthesis process
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
In situ synthesis and bonding of TiTiAlTiC/Ni functionally graded materials by field-activated pressure-assisted synthesis process
چکیده انگلیسی

Employing reactive synthesis and consolidation and using elemental powders as reactants, TiC/Ni cermets were formed and bonded to Ti substrates in one step by a field-activated method. Microstructural observations and EDS analyses revealed well-formed, crack-free bonds between the layers. Bonding between the TiC/Ni cermet and the Ti substrate was facilitated by the formation of TiAl as an intermediate layer, which also formed from the elements during the on-step process.Shear strength and thermal shock evaluations were made on the resulting samples. The diffusion-bonded interface has a shear resistance of as high as 70.98 MPa and has a good thermal shock resistance. Crack propagation observations indicate high interface strength. The interface between Ti and TiAl has a higher bonding strength than that between the TiC/Ni cermet and TiAl.


► An advanced bonding of cermet to metal was carried out by PAPAS process.
► In situ synthesis of TiC/Ni and bonding to Ti were accomplished in one step.
► TiAl was used as intermediate layer of bonding.
► Heat produced by the formation of TiAl from element powder was the key of bonding.
► The diffusion-bonded interface has higher shear and thermal shock resistance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 538, 15 March 2012, Pages 103–109
نویسندگان
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