Research And Development On Advanced Graphite Materials. Volume XIII - Development Of A Fine-Grain Isotropic Graphite For Structural And Substrate Applications

Item

Title
Research And Development On Advanced Graphite Materials. Volume XIII - Development Of A Fine-Grain Isotropic Graphite For Structural And Substrate Applications
Date
1964
Index Abstract
Contrails and DTIC
Photo Quality
Incomplete
Report Number
WADD TR 61-72 Volume XIII
Creator
Howard, R. A.
Piper, E. L.
Corporate Author
Advanced Materials Laboratory, National Carbon Company
Laboratory
AF Materials Laboratory
Extent
36
NTRL Accession Number
AD601753
Identifier
AD0601753
AD0601753
Access Rights
OTS
Distribution Classification
1
Contract
AF 33(616)-6915
DoD Project
7350
DoD Task
735002
DTIC Record Exists
Yes
Distribution Change Authority Correspondence
None
Report Availability
Full text available
Date Issued
1964-05
Abstract
The report describes the development, fabrication, and physical properties of grade RVC graphite (formerly designated as experimental grade RT-0029). Grade RVC has been manufactured in sizes up to 18 inches in diameter by 15 inches in length and is nominally characterized by a bulk density of 1.81 g/cc, an admittance to N2 of 2x10-2 and 6x10-3cm2/sec. w. g. and a. g. respectively, and a room temperature flexural strength w.g. and a.g. of 2560 and 1930 lbs/in2 respectively. RVC is an excellent substrate material for silicon carbide coatings because its thermal expansion between 400 and 1000°C is approximately 0.3 per cent in both grain directions. This expansion is in the same range as that for silicon carbide. Results are also presented on high temperature oxidation of silicon carbide coated grade RVC specimens. The unusually good oxidation protection afforded the graphite by the coating demonstrates the marked superiority of this substrate over other graphite materials which do not match the silicon carbide in thermal expansion.
Publisher
Wright-Patterson Air Force Base, OH : AF Materials Laboratory, Research and Technology Division, Air Force Systems Command
Distribution Conflict
No
Provenance
Bearcat
IIT
Type
report
Subject
Refractory Materials
Graphite
Production
Structural Properties
Mechanical Properties
Thermal Expansion
Thermal Properties
Silicon Coatings
Ceramic Coatings
Carbides
Antioxidants
Heat Treatment
Structural Components
Isotropism
Carbon
Fracture (Mechanics)
Asphalt
Processing
Silicon Compounds
Format
1 online resource