Fabrication and high heat flux testing of plasma sprayed beryllium ITER first wall mock-ups

Plasma-sprayed beryllium ITER first wall mock-ups have survived 3000 therma l fatigue cycles at 1 MM/m(2) without damage during testing at the Plasma M aterials Test Facility at Sandia National Laboratory in New Mexico. This he at flux level is twice the expected design heat Bur for ITER first wall mod ules. Plasma sprayed beryllium mock-ups were vacuum plasma sprayed at the L os Alamos National Laboratory's Beryllium Atomization and Thermal Spray Fac ility, Results will be reported on the fabrication, high heat flux testing and post-mortem analysis of two beryllium plasma sprayed mock-ups (1) beryl lium plasma sprayed directly on a CuNiBe heat sink and (2) beryllium plasma sprayed on a compliant layer of aluminum which was explosion-bonded to a C uCrZr copper heat sink. The high heat flux tests utilized the 30 kW Electro n Beam Test System at a Sandia National Laboratory. (C) 1998 Published by E lsevier Science B.V. All rights reserved.