Zobrazeno 1 - 10
of 10
pro vyhledávání: '"H. E. Martens"'
Autor:
H. E. Martens, W. V. Kotlensky
Publikováno v:
Journal of the American Ceramic Society. 48:135-138
Structural changes in pyrolytic graphite accompanying deformation produced by applying stress parallel to substrate examined by electron microscopy and X-ray diffraction
Publikováno v:
A S L E Transactions. 6:161-177
The coefficient of sliding friction for a number of materials was measured during the flight of Ranger 1 spacecraft. Flat disks of materials of interest were rotated at a speed of 8–14 inches per minute while in contact with 1/8-inch diameter hemis
Publikováno v:
AIAA Journal. 2:93-98
The static bearing capacity of a granular material consisting of dry, crushed olivine basalt was determined in air and in a 10^(-6) mm Hg vacuum by means of cylindrical probes with a range of diameters. Samples with various particle size distribution
Publikováno v:
AIAA Journal. 1:1402-1407
Autor:
W. V. Kotlensky, H. E. Martens
The room-temperature structural properties and the tensile properties up to 5000 F (275O C) were determined for ten grades of specially prepared petroleum-coke coal-tar-pitch graphites which were graphitized at 5430 F (3000 C). One impregnation with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31eae324ccd48297a2318c70b96edab7
https://doi.org/10.1016/b978-0-08-009708-4.50059-6
https://doi.org/10.1016/b978-0-08-009708-4.50059-6
Publikováno v:
AIAA Journal. 1:1913-1914
Publikováno v:
Nature. 193:1066-1067
IN a recent note1, results were presented on the tensile properties and structural changes for pyrolytic graphite hot worked at 2,750° C. and tested over the range room temperature to 2,200° C. This communication presents hitherto unreported result
Autor:
W. V. Kotlensky, H. E. Martens
Publikováno v:
Nature. 206:1246-1247
GLASSY carbon is a turbostratic form of carbon which is produced by carbonizing a polymer under carefully controlled conditions of temperature and pressure. It has a density of 1.5 g/cm3 and is reported to have a very low gas permeability1. Tensile p
Autor:
H. E. Martens, W. V. Kotlensky
Publikováno v:
Nature. 196:1090-1091
BORON nitride is sometimes referred to as ‘inorganic graphite’ because its structure is like graphite with alternating boron and nitrogen atoms replacing the carbon atoms in the hexagonal structure. Its sublimation temperature (3,000° C) is some
Autor:
H. E. Martens, L. D. Jaffe
Publikováno v:
Journal of Applied Physics. 31:1122-1122
The polycrystalline material was deposited on a syn thetic graphite substrate by decomposition of a methanehydrogen mixture at 2100 deg C; its specific gravity prior to tensile testing was 2.20. Stress was applied parallel to the plane of deposition.