Published October 1, 1996 | Version v1
Journal article Metadata-only

New composite composed of boron carbide and carbon fiber with high thermal conductivity for first wall

Creators

  • 1. Japan Atomic Energy Research Inst., Naka, Ibaraki (Japan). Naka Fusion Research Establishment
  • 2. Hitachi Research Laboratory (Japan)
  • 3. Department of Crystalline Materials Science, Nagoya University (Japan)

Description

A new composite was created from B4C powder and carbon fiber by hot-pressing at 1700 C or more. The composite sintered at 1700 C with 20-35 vol% B4C shows a thermal conductivity of 250 W/m.K at 25 C which is slightly lower than the felt type C/C, but its value becomes higher than the C/C at temperatures above 400 C. The composite with 40 at% B shows more controllable recycling properties than B4C. The erosion yield for the composite is about half the yield for graphite at 800 K. After electron beam irradiation in order to test heat resistance no cracks were detected up to 22-23 MW/m2 leading to a surface temperature of 2500 C. (orig.)

Additional details

Publishing Information

Journal Title
Journal of Nuclear Materials
Journal Volume
233-237
Journal Issue
pt.A
Journal Page Range
p. 781-786.
ISSN
0022-3115
CODEN
JNUMAM

Conference

Title
7. international conference on fusion reactor materials (ICFRM-7).
Dates
25-29 Sep 1995.
Place
Obninsk (Russian Federation).

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
28024471
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ANNEALING; BORON CARBIDES; CARBON FIBERS; COMPOSITE MATERIALS; DEUTERIUM IONS; ELECTRON BEAMS; EROSION; FIRST WALL; HEAT RESISTANT MATERIALS; HOT PRESSING; KEV RANGE 01-10; OPTICAL MICROSCOPY; PHYSICAL RADIATION EFFECTS; RECYCLING; SINTERING; TEMPERATURE RANGE 0400-1000 K; TEMPERATURE RANGE 1000-4000 K; THERMAL CONDUCTIVITY; THERMONUCLEAR REACTOR MATERIALS
Descriptors DEC
BEAMS; BORON COMPOUNDS; CARBIDES; CARBON COMPOUNDS; CHARGED PARTICLES; ENERGY RANGE; FABRICATION; FIBERS; HEAT TREATMENTS; IONS; KEV RANGE; LEPTON BEAMS; MATERIALS; MATERIALS WORKING; MICROSCOPY; PARTICLE BEAMS; PHYSICAL PROPERTIES; PRESSING; RADIATION EFFECTS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; THERMONUCLEAR REACTOR WALLS