Fabrication and characterization of tungsten and graphite based PFC for divertor target elements of ITER like tokamak application

Khirwadkar, SS and Singh, KP and Patil, Y and Khan, MS and Buch, JJU and Patel, Alpesh and Tripathi, S and Jaman, PM and Rangaraj, L and Divakar, C (2011) Fabrication and characterization of tungsten and graphite based PFC for divertor target elements of ITER like tokamak application. Fusion Engineering and Design, 86 . pp. 1736-1740. ISSN 0920-3796

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Abstract

The development of the fabrication technology of macro-brush configuration of tungsten (W) and carbon (graphite and CFC) plasma facing components (PFCs) for ITER like tokamak application is presented. The fabrication of qualified joint of PFC is a requirement for fusion tokamak. Vacuum brazing method has been employed for joining of W/CuCrZr and C/CuCrZr. Oxygen free high conductivity (OFHC) copper casting onWtiles was performed followed by machining, polishing and ultrasonic cleaning of the samples prior to vacuum brazing. The W/CuCrZr and graphite/CuCrZr based test mockups were vacuum brazed using silver free alloys. The mechanical shear and tensile strengths were evaluated for the W/CuCrZr and graphite/CuCrZr brazed joint samples. The micro-structural examination of the joints showed smooth interface. The details of fabrication and characterization procedure for macro-brush tungsten and carbon based PFC test mockups are presented.

Item Type:	Journal Article
Additional Information:	Copyright for this article belongs to M/s. Elsevier BV
Uncontrolled Keywords:	Plasma facing component (PFC);Vacuum brazing;Plasma facing material (PFM);Micro-structural examination;Shear strength; Tensile strength
Subjects:	CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department:	Other, Other, Other, Other, Other, Other, Other, Materials Science Division, Materials Science Division, Materials Science Division
Depositing User:	Ms. Alphones Mary
Date Deposited:	01 Mar 2012 14:18
Last Modified:	01 Mar 2012 14:18
URI:	http://nal-ir.nal.res.in/id/eprint/10365

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