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  • 1
    Electronic Resource
    Electronic Resource
    Dry sliding wear behaviour of a P/M ferrous alloy superficially densified by laser shock processing
    Amsterdam : Elsevier
    Surface & Coatings Technology 67 (1994), S. 125-132 
    Details
    ISSN: 0257-8972
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0257-8972(05)80036-2
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  • 2
    Electronic Resource
    Electronic Resource
    Microstructural evolution during liquid-phase sintering of high-speed steel-based composites containing TiN-coated Al2O3, TiC, or Al2O3 particles: influence on wear properties (1993)
    Springer
    Journal of materials science 28 (1993), S. 6147-6154 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A high-speed steel containing 10 vol% TiN-coated Al2O3, Al2O3, or TiC particles was liquid-phase sintered with the addition of copper-phosphorus. The mixtures were sintered in a furnace with a controlled axial temperature gradient, and their microstructural evolution during sintering was studied using quantitative image analysis. Additional samples were fully densified and tested using a pin-on-disc tribometre. Interfaces were characterized by transmission electron microscopy. The final microstructure depended on the behaviour of the liquid phases surrounding the ceramic particles during sintering, which was different for the three types of particles used, and influenced the wear resistance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00365035
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  • 3
    Electronic Resource
    Electronic Resource
    Structure and morphology of titanium nitride films deposited by laser-induced chemical vapour deposition (1994)
    Springer
    Journal of materials science 29 (1994), S. 404-411 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Results on the deposition of titanium nitride on AISI M2 tool steel-type substrates by pyrolytic laser chemical vapour deposition are reported. Spots of TiN were deposited from a gas mixture of TiCl4, nitrogen and hydrogen using a continuous wave quasi-TEMoo CO2 laser beam. The morphology and the structure of the deposited material were investigated by optical microscopy, scanning electron microscopy and X-ray diffraction. The chemical composition was studied with a scanning electron microscope with an energy dispersive spectrometer, and with an electron probe microanalyser. The topography of the coating was analysed with a stylus profilometer and different thickness profiles were measured depending on the laser-power densities and irradiation times. The morphology of the films showed a strong dependence on the laser-power density, interaction time and partial pressure of TiCl4.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01162499
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  • 4
    Electronic Resource
    Electronic Resource
    Influence of manganese sulfide (MnS) addition on the wear behavior of M3/2 high-speed steel (1996)
    Springer
    Tribology letters 2 (1996), S. 247-261 
    Details
    ISSN: 1573-2711
    Keywords: high-speed steel ; manganese sulfide ; solid lubricant ; carbides ; image analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Powder-metallurgical (P/M) high-speed steels can exhibit a high wear resistance due to the presence of carbides adequately distributed within a Fe-based matrix. The P/M route enables various additions to the base material to be made, with the intent of increasing this wear resistance. This work deals with the dry sliding wear behavior of P/M M3/2 high-speed steel, and focusses on the role of the carbides. Two wear regimes can occur, depending on the behavior of the oxides formed in the wear track. Manganese sulfide (MnS) particulate addition is shown to stabilize the lower-wear regime, the duration of which, moreover, can be predicted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00173131
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  • 5
    Electronic Resource
    Electronic Resource
    Necklace structure obtained by forging Astroloy supersolidus-sintered preforms (1982)
    Springer
    Journal of materials science 17 (1982), S. 2902-2910 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A new and original densification process of nickel-based superalloys consists in forging supersolidus-sintered preforms. From the coarse-grained structure of the material sintered in the presence of a liquid phase, forging at a high deformation ratio can lead to a duplex structure (usually called “necklace” structure) as can be obtained by conventional HIP + forge or cast/wrought routes. Optimal forging conditions to form a “necklace” structure have been determined for Astroloy powders. The restoration and recrystallization mechanisms are described in relation to deformation conditions and heat-treatments. Structures and related mechanical behaviour have been characterized. The “necklace” material compares well with conventional direct “HIPed” or forged materials. Good creep-rupture properties are due to large warm-worked grains, and a high resistance to crack initiation and propagation results from recrystallized grains of the duplex structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00644668
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  • 6
    Electronic Resource
    Electronic Resource
    Excimer Laser Processing of Grey Cast Iron: Microstructural and Tribological Characterization (1998)
    Springer
    Hyperfine interactions 112 (1998), S. 39-42 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Pearlitic grey iron was treated by means of a XeCl laser to remelt only a shallow layer. This process allows to modify the heteregeneous surfaces of cast irons in order to improve their tribological behaviour. The energy density ranged from 0.3 to 3 J/cm2 and the number of shots from 4 to 40. It is shown that after laser irradiation austenite is formed in the melted layer; compressive stresses at the surface were exhibited as well as the deposition of graphite and the formation of carbides. It is shown that excimer laser processing highly decreases the coefficient of friction and the wear rate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1011016022614
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  • 7
    Electronic Resource
    Electronic Resource
    Microstructure of nodular cast iron after excimer laser surface processing (1995)
    Springer
    Hyperfine interactions 95 (1995), S. 227-245 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Nodular iron of martensitic structure was treated by means of a XeCl laser prototype. The energy density varied from 0.3 to 5 J/cm2 and the number of shots from 4 to 40. Conversion electron Mössbauer spectroscopy, conversion X-ray Mössbauer spectroscopy and grazing incidence X-ray diffraction were used to characterize the irradiated surface. Some Rutherford backscattering spectrometry measurements were performed to control surface oxidation and carbon distribution. It is shown that after irradiation austenite formed in a rather deep heat affected zone (10–20 μm) compared to the thickness of the melted zone (∼ 1 μm). The austenite amount as well as its carbon content increase with energy density and number of shots up to a threshold of carbide formation. Beyond the threshold Fe2C, Fe3C and Fe5C2 formed only in the melted zone. The carbon content as a function of depth is constant in the melted layer, then decreases quickly from the melted layer-heat affected zone interface down its initial value. The carbon content is shown to govern the evolution of phases content in the melted layer depending on the laser treatment conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02146316
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  • 8
    Electronic Resource
    Electronic Resource
    Quantitative image analysis of electrophoretic coatings (1992)
    Springer
    Journal of materials science 11 (1992), S. 272-275 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00729410
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  • 9
    Electronic Resource
    Electronic Resource
    Cladding by laser shock processing (1994)
    Springer
    Journal of materials science 13 (1994), S. 773-775 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00271317
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  • 10
    Electronic Resource
    Electronic Resource
    Spot laser hardening (1996)
    Springer
    Journal of materials science 15 (1996), S. 1064-1066 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00274908
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