1-12 of 12 Search Results for

vacuum bagging

Sort by
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006935
EISBN: 978-1-62708-395-9
.... This is difficult to achieve with processes that flow the polymers and reinforcement to fill the tool. The reinforcing fibers must be placed using a process such as filament winding, resin transfer molding, or hand lay-up and vacuum bagging. Reinforcement Limitations The ability of the various processes...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006828
EISBN: 978-1-62708-329-4
...- and cobalt-base alloys and precious metals (gold, platinum, and palladium). These filler materials, when used with improved atmospheres such as ultradry hydrogen and vacuum and equipment such as vacuum furnaces with gas-quenching capabilities, have raised the upper-temperature brazing limit to above 1650 °C...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006864
EISBN: 978-1-62708-395-9
... of an immiscible polymer blend. A vacuum is often applied to aid in the removal of moisture/volatiles and degradation products. Finally, the degassing operation can be used to dry hygroscopic polymers during the extrusion process. Caution must be used in this case so that the polymer in question does not degrade...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006943
EISBN: 978-1-62708-395-9
... filaments. Both types of the hexaboride-type emitters require better vacuum than tungsten filament. The field-emission types used in SEM instruments are the Schottky emitter and cold-cathode emitter, both manufactured with a sharp tip. The Schottky emitter is made of a tungsten single crystal (100) coated...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003534
EISBN: 978-1-62708-180-1
.... In general, nothing should ever come in physical contact with the area of interest. Even the air surrounding the sample should be kept free of smoke and particles. Caution should also be taken to make sure that samples do not come in contact with common plastic bags during storage or shipping, because...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006771
EISBN: 978-1-62708-295-2
... not come in contact with common plastic bags during storage or shipping because additives in the plastic can transfer to the sample and be detected with surface-sensitive tools. Clean plastic petri dishes (polystyrene or polypropylene are common), glass containers, and even plain white typing paper are all...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003529
EISBN: 978-1-62708-180-1
... will not properly seal the vacuum chamber where the emitted light waves are analyzed. A common requirement for a glow discharge spectrophotometer (GDS) is a 13 mm ( 1 2 in.) diameter, flat-ground spot on a specimen at least 1.6 mm ( 1 16 in.) thick. These analytical methods are quick...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006759
EISBN: 978-1-62708-295-2
... laboratories. As previously mentioned, interpretation of EDS data requires a trained operator using sound technical judgement to avoid misleading results. When the sample is nonconductive and must be imaged in variable pressure, extended pressure, or low vacuum, beam-broadening effects can include background...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.9781627083959
EISBN: 978-1-62708-395-9
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003524
EISBN: 978-1-62708-180-1
... “Cleaning”). These replicas can be coated with a thin layer (about 20 nm, or 2 × 10 −8 m, thick) of vacuum-deposited gold or aluminum to improve their reflectivity, or they may be shadowed at an angle to increase the contrast of fine detail. The replicas may be examined by incident-light or transmitted...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006929
EISBN: 978-1-62708-395-9
... 100 °C (212 °F). In many instances, the technique dries the plastic specimen during testing. A better technique is to ramp the temperature, as in the DSC and DMA techniques, at 10 °C/min (18 °F/min). A further improvement ( Ref 24 ) is to enclose the specimen in a polytetrafluoroethylene (PTFE) bag...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006925
EISBN: 978-1-62708-395-9