Published July 1986 | Version v1
Journal article Metadata-only

The coefficient of thermal expansion of a super invar-Ta/sub 16/W/sub 18/O/sub 94/ composite

Creators

  • 1. Lab. for Manufacturing and Productivity, Massachusetts Institute of Technology, Cambridge, MA 02139

Description

The coefficient of thermal expansion (CTE) of a hot pressed Ta/sub 16/W/sub 18/O/sub 94/ which was produced from Ta/sub 2/O/sub 5/ and WO/sub 3/ powders was found to be -1.52x10/sup -6/K/sup -1/ in the temperature range 180-330 K. Using the Ta/sub 16/W/sub 18/O/sub 94/ and Super Invar powders, 50:50 volume percent metal-ceramic composites were made by the powder metallurgy techniques. When the mixture of constituent powders was hot pressed at 1123 K for 10 minutes, a CTE of 1.1x10/sup -6/K/sup -1/ was obtained in the temperature range 140-420 K

Additional details

Publishing Information

Journal Title
J. Eng. Mater. Technol.
Journal Volume
108
Journal Issue
3
Series
J. Eng. Mater. Technol.
Journal Page Range
270-274
ISSN
0094-4289
CODEN
JEMTA

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
18027203
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CERAMICS; COMPOSITE MATERIALS; HOT PRESSING; INVAR; LOW TEMPERATURE; MEDIUM TEMPERATURE; METALS; POWDER METALLURGY; POWDERS; TANTALUM OXIDES; THERMAL EXPANSION; TUNGSTEN OXIDES; VERY HIGH TEMPERATURE
Descriptors DEC
ALLOYS; CHALCOGENIDES; ELEMENTS; EXPANSION; FABRICATION; IRON ALLOYS; IRON BASE ALLOYS; MATERIALS; MATERIALS WORKING; METALLURGY; NICKEL ALLOYS; OXIDES; OXYGEN COMPOUNDS; PRESSING; TANTALUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TUNGSTEN COMPOUNDS