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wear-resistant coatings

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Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006794
EISBN: 978-1-62708-295-2
... to protect metallic surfaces from wear and corrosive wear ( Ref 69 , 70 ). Hard composite-oxide coatings, nitride coatings and multilayered ceramic coatings such as TiC-TiN ( Ref 67 ), are effective in protecting metallic components from wear, corrosion, and corrosive wear due to generally high resistance...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
... of the material play an important role in adhesive wear. A high hardness (obtained by work hardening or heat and surface treatment), a stable oxide film on the contact surface, and material with a low surface shear resistance can provide improved resistance to adhesion ( Ref 27 ). Scoring Scoring...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003569
EISBN: 978-1-62708-180-1
... with a discussion on correlations between laboratory results and service. bearings brittle materials cavitation erosion cavitation resistance cavitation test centrifugal pumps ductile materials gearbox CAVITATION EROSION is a type of wear in hydraulic turbines, on pump impellers, on ship...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046378
EISBN: 978-1-62708-234-1
... pump sleeve used to pump river water to a brine plant. The sleeve at left, coated with a fused nickel-base hard-facing alloy, shows severe abrasive wear by river-water silt after 3387 h of service. Sleeve at right, coated with plasma-deposited chromium oxide, shows little evidence of wear after 5190 h...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003563
EISBN: 978-1-62708-180-1
... and improved the fatigue resistance of coated steel races to match that of ceramic balls. This combination of coated races and ceramic balls resulted in rolling bearings of improved performance, for example, higher rotational speeds in roller bearings for machine tool spindles ( Ref 43 ) and pump bearings...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001533
EISBN: 978-1-62708-225-9
... of sliding bearing bush failure in the process of operation have set the urgent tasks of finding the causes of failure and of increasing wear resistance and resistance to fatigue failure of a sliding bearing babbit bush. For this reason, the investigation described in this article was completed to determine...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003568
EISBN: 978-1-62708-180-1
... by particles having higher kinetic energy, thus increasing the rate of damage. Erosion by fly ash causes polishing, flat spots, wall thinning, and eventual tube rupture. Fly-ash erosion can be controlled by coating tube surfaces with refractory cements or other hard, wear-resistant materials, although...
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
... to significantly increase the resistance to contamination and wear that initiate surface failure. These coatings are commonly used on steel balls, rollers, and raceways. The PVD-coated steel raceways in combination with ceramic rolling elements have become a common choice for high-performance bearings...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006795
EISBN: 978-1-62708-295-2
..., and eventual tube rupture. Fly ash erosion can be controlled by coating tube surfaces with refractory cements and other hard, erosion-resistant materials, although this reduces the heat-transfer capability of the surface. An alternative method is the use of baffles to channel gas flow away from critical areas...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
... of the electrical contact resistance depends on the nature of the coating (noble versus nonnoble) and can be formalized using decreasing power-law functions of the sliding amplitude ( Ref 33 ). Fig. 5 Fretting wear damage in electrical connectors The transportation of goods by road or rail obviously...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006793
EISBN: 978-1-62708-295-2
... that are typically larger in magnitude in the direction perpendicular to the grinding direction than in the direction of grinding. Impact Failure of Ceramic Coatings Hard coatings are becoming widely used to increase wear resistance of machine parts subjected to repetitive normal impacts or tools used...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001265
EISBN: 978-1-62708-215-0
... failed by fatigue. Implants with porous coatings showed significant loss of the bead coating and subsequent migration of the beads to the articulating surface between the polyethylene tibial component and the femoral component, resulting in significant third-body wear and degradation of the polyethylene...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003570
EISBN: 978-1-62708-180-1
... have confirmed that commercially available powder (e.g., Ni-15.5Cr-4Fe-4Si-3B, in weight percent), plasma sprayed on a variety of substrates and then flame remelted, form adherent, hard, erosion-resistant coatings ( Ref 25 ). Performance in vibratory cavitation of as-sprayed and flame remelted Ni-Cr-Fe...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003562
EISBN: 978-1-62708-180-1
... polymer from carbonaceous impurities in the atmosphere, which can have a profound effect on the contact resistance. For separable connectors, gold plating appears to be the most satisfactory surface, although cheaper coatings are actively being sought ( Ref 30 ) and are discussed further in the section...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003549
EISBN: 978-1-62708-180-1
... in the environment; change in the alloy or heat treatment; change in design; use of galvanic protection; use of inhibitors; use of nonmetallic coatings and liners; application of metallic coatings; use of surface treatments, thermal spray, or other surface modifications; corrosion monitoring; and preventive...
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
..., and wear failures. The article provides information on the synthesis and interpretation of results from the investigation. Finally, it presents key guidelines for conducting a failure analysis. chemical analysis corrosion failure corrosion testing data collection failure analysis fracture...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006850
EISBN: 978-1-62708-395-9
...," and "semicrystalline thermoplastics." The article also discusses the effects of environment and lubricant on the wear failures of polymers. It presents a case study on considering nylon as a tribological material and failure examples, explaining wear resistance of polyurethane elastomeric coatings and failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001910
EISBN: 978-1-62708-217-4
... not in the nitrided condition as was required. This resulted in lower wear and fatigue resistance. These components also had a silicon content nearly double of that specified. The high silicon content lowered the notch tensile strength and toughness of the components. Breech bolts Weapons Military...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0009190
EISBN: 978-1-62708-225-9
... of wear is reduced to 94%. Figure 4 shows that the optimized gear geometry reduced the maximum contact temperature to a T c of 150 °C (302 °F). The combination of reduced contact temperature and the increased scuffing resistance provided by the higher viscosity mineral oil with antiscuff additives...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006824
EISBN: 978-1-62708-329-4
...-based solutions can involve hardening of the susceptible surfaces, often through the application of coatings. With this approach, it is important to match the hardness of the two surfaces, or the wear rate of the unhardened surface can be worsened. Conversely, on precision surfaces such as compressor...