Migration of Materials During Accelerated Aging By Oxygen Pressure Method

1951 ◽  
Vol 23 (11) ◽  
pp. 1646-1649 ◽  
Author(s):  
Marion Fackler ◽  
John Rugg
Keyword(s):  
Oxygen Pressure ◽  
Accelerated Aging ◽  
Pressure Method

Migration of Materials during Accelerated Aging by the Oxygen Pressure Method

1952 ◽  
Vol 25 (2) ◽  
pp. 331-338
Author(s):  
Marion B. Fackler ◽  
John S. Rugg
Keyword(s):  
Oxygen Pressure ◽  
Accelerated Aging ◽  
Reliable Test ◽  
Oxygen Bomb ◽  
Pressure Method ◽  
Test Conditions

Abstract It has been definitely established that various materials migrate and that the magnitude of the resulting error is significance Migration takes place whenever unlike stocks are aged together in a bomb. The most reliable test conditions prevail when separate bombs are used for individual stocks. It is recommended that specifications for oxygen-bomb aging be changed. The change should specify the use of individual bombs.

Improvement of Emission Intensity for Near-infrared-emitting Ca14Zn6Al10O35:Mn4+Phosphor by Oxygen-pressure Method

2016 ◽  
Vol 45 (9) ◽  
pp. 1096-1098 ◽  
Author(s):  
Takuya Hasegawa ◽  
Sun Woog Kim ◽  
Takeshi Abe ◽  
Shota Kumagai ◽  
Ryota Yamanashi ◽  
...  
Keyword(s):  
Oxygen Pressure ◽  
Emission Intensity ◽  
Near Infrared ◽  
Pressure Method

Soft Vulcanized Rubber. Effect of Temperature and Oxygen Pressure on Aging Rate

1937 ◽  
Vol 10 (2) ◽  
pp. 336-345
Author(s):  
J. H. Ingmanson ◽  
A. R. Kemp
Keyword(s):  
Oxygen Pressure ◽  
Mechanical Strain ◽  
Accelerated Aging ◽  
Effect Of Temperature ◽  
Aging Rate ◽  
Vulcanized Rubber ◽  
Rubber Compounds ◽  
Cause Of Failure ◽  
Service Conditions ◽  
Oxidation Effect

Abstract IMPORTANT to the manufacturer and consumer of rubber goods are suitable accelerated aging tests for predicting readily the life of rubber articles under the variable storage and service conditions encountered. Since service conditions may involve the exposure of rubber to wide variations of temperature, light, and atmosphere under various types of mechanical strain, there is obviously need for a variety of tests, each designed to emphasize factors which are most important in any given set of service conditions. Since the primary cause of failure of soft vulcanized rubber in service is oxidation, emphasis has been placed on tests which accelerate the oxidation effect. The most widely adopted and generally satisfactory procedure of this type is the Bierer and Davis oxygen bomb method which involves heating the rubber under oxygen pressure. In Bierer and Davis' original publication (2), results were shown on the effect of increasing oxygen pressure in increments of 28.1 kg. up to 112.5 kg. per cm. on the aging of two different rubber compounds at the three temperatures, 50°, 60°, and 70° C. Their results showed that in some cases there was a uniform increase in aging rate with increased pressure and in other cases the rate increased rapidly up to a pressure of 28.7 kg. per sq. cm. but more slowly with further increases in pressure. In a later investigation (3) the same authors employed a pressure of 21.1 kg. per sq. cm. and 60° C. throughout. For the past ten years most laboratories have used an oxygen pressure of 21.1 kg. per sq. cm. and a temperature of 70° C., which may therefore be considered as standard.

Thermal Transport of MetallicPrBa2Cu4O8Compound Prepared by High-Oxygen-Pressure Method

1997 ◽  
Vol 36 (Part 1, No. 7A) ◽  
pp. 4414-4417 ◽  
Author(s):  
Michiaki Matsukawa ◽  
Kimiaki Iwasaki ◽  
Koshichi Noto ◽  
Yuh Yamada ◽  
Shigeru Horii
Keyword(s):  
Oxygen Pressure ◽  
Thermal Transport ◽  
High Oxygen ◽  
Pressure Method ◽  
High Oxygen Pressure
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