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vacuum deposits

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001717
EISBN: 978-1-62708-217-4
... treatment and final machining, is cadmium coated using a vacuum deposition process. The part is subsequently painted using an epoxy primer. The failure of the part occurred at the radius separating the spindle from the base of the component. This region is subjected to the loads generated by the aircraft...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001380
EISBN: 978-1-62708-215-0
... material that has a higher value of K ISCC . It was strongly recommended that vacuum deposited cadmium be used in place of electrolytic cadmium plating. The vacuum deposition process will prevent HE of the material during plating that can be induced by the electrolytic plating process. Selected...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001236
EISBN: 978-1-62708-218-1
... on the cylinder surface and which is not so easily scoured off during vibration. The effect of the imploding vacuum bubbles is reduced by the oil film which can renew itself from the emulsion. Diesel engines Engine cylinders Pitting (wear) Gray iron Cavitation wear The cylinder lining under...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001059
EISBN: 978-1-62708-214-3
... Abstract Field metallography and replication were performed on a type 316 stainless steel column in diglycol amine vacuum service to determine the cause of visible OD pitting on the column in several areas above the insulation support rings. The examination revealed transgranular stress...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001691
EISBN: 978-1-62708-234-1
... Abstract The Advanced Photon Source (APS) is a state-of-the-art synchrotron light source. The storage ring vacuum chamber is fabricated from 6061 extruded aluminum. Water connections to the vacuum chambers that were fabricated from 3003 aluminum had developed water leaks, which were...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001666
EISBN: 978-1-62708-229-7
... of etching. The replica taken after light etching was intended to remove some of the corrosion product from within the crack for EDX analysis in the scanning electron microscope. Heavier etching was necessary to reveal the microstructure. Both sets of replicas were coated with vacuum-deposited carbon...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001629
EISBN: 978-1-62708-235-8
... Abstract A large number of electropolished copper parts showed evidence of discoloration (tinting) after electropolishing. Because these parts are used in a high-vacuum application, even trace amounts of organic materials would be problematic. Scanning electron microscopy of nondiscolored...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001628
EISBN: 978-1-62708-234-1
... and discolored regions, with regard to surface morphology. This revealed features that were consistent with plating nodules in the nondiscolored area, whereas the discolored region exhibited a rougher morphology along with adherent dark deposits ( Fig. 2 ). Fig. 2 Portable optical microscopy revealing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001713
EISBN: 978-1-62708-220-4
... in the blender, (3) water introduced during a cleaning operation and not removed prior to charging the vessel, (4) a breech in a vacuum condenser tube allowed cooling water to flow from the condenser shell into the tubes, and ultimately into the blender, or (5) heat from friction in a bearing or between...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001658
EISBN: 978-1-62708-229-7
... of this was available for examination; it is referred to as the 1977 deposit. Deposit Examination The two deposits were examined by optical metallography and by electron microprobe analysis. Since both deposits were porous, they were vacuum impregnated with an epoxy compound before standard encapsulation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c9001622
EISBN: 978-1-62708-222-8
... of residue can be seen as adherent deposits, and direct comparison can be conducted between nondiscolored and discolored areas with regard to apparent cleanliness and surface roughness. Energy-dispersive spectroscopy is useful for determining relative percentages of the elements above Atomic No. 5...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006769
EISBN: 978-1-62708-295-2
... the development of SEM technology and operating principles of basic systems of SEM. The basic systems covered include the electron optical column, signal detection and display equipment, and the vacuum system. The processes involved in the preparation of samples for observation using an SEM are described...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001704
EISBN: 978-1-62708-218-1
... and the potential contribution of other possible corrosion mechanisms should be evaluated. One characteristic of MIC that sets it apart from other types of corrosion is the presence of mound-like surface deposits with a black or reddish-brown color. Black corrosion deposits are generally composed of iron...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089793
EISBN: 978-1-62708-235-8
... on the outside wall at point B. The weld was deposited using a single-head submerged arc process, and the failure occurred when 32 mm (1.25 in.) of weld depth had been laid. Sections through the failure revealed that the cracking had initiated at the root of the weld at the intersection of the plate and backing...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003533
EISBN: 978-1-62708-180-1
... column, signal detection and display equipment, and vacuum system. It discusses the preparation of samples for observation using an SEM and describes the application of SEM in fractography. If the surface remains unaffected and undamaged by events subsequent to the actual failure, it is often a simple...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001318
EISBN: 978-1-62708-215-0
... disc ruptured due to overpressurization Scanning Electron Microscopy Fractography Using scanning electron microscopy, surface deposits were detected on only the cylinder side of both failed and unfailed discs that had been exposed to the hydrogen/ethylene mixture ( Fig. 3 and 4 ). Fig...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001099
EISBN: 978-1-62708-214-3
..., or use of coating methods that do not inoculate with hydrogen, such as vacuum-deposition techniques Devising insulating sleeves to separate the steel from direct contact with the aluminum Ensuring that the compressor components, chamber, and refrigerant are kept dry at all times, particularly...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006792
EISBN: 978-1-62708-295-2
..., elimination of these inclusions during casting leads to an improvement of RCF life and thereby bearing life. Vacuum induction melting, vacuum arc remelting, electroslag remelting, and combinations of these processes are commonly used to produce bearings for demanding applications. Vacuum Induction Melting...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001044
EISBN: 978-1-62708-214-3
... Abstract Inhibited admiralty brass (UNS C44300) condenser tubes used in a natural-gas-fired cogeneration plant failed during testing. Two samples, one from a leaking tube and the other from an on leaking tube, were examined. Chemical analyses were conducted on the tubes and corrosion deposits...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001632
EISBN: 978-1-62708-234-1
... for a variety of experiments in nuclear physics, solid state physics, and neutron science. At LANSCE, for example, a high-power beam of 800 MeV protons at a current level of 1 mA (800 kW) can be transported in vacuum through the experimental area to a beam stop. Because the beam stop must be heavily water...