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  • 1
    Digitale Medien
    Digitale Medien
    An Automatic High Velocity Arc Spraying System (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 373-374 (Mar. 2008), p. 89-92 
    Details
    ISSN: 1013-9826
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: A new automatic high velocity arc spraying system was developed. The system wasconsisted of five units, i.e. central control unit, operating machine, positioner, touching screen andhigh velocity arc spraying equipment. The central control unit is controlled by a program, controllingother four units. Spraying parameters could be input and modified on the touching screen duringspraying. The moving of spraying gun was carried out by motion arm of the operating machine. Therotational velocity and angle of components to be sprayed was controlled by positioner. The sprayingprocess for a cylinder body of automobile engine with the system was introduced in detail. The autoand manual arc spraying have been used to fabricate coating. The microstructure of the coatingsprepared by the two spraying processing was analyzed. The result shows that the auto sprayed coatinghas a more uniform and compact structure than that of the manual sprayed coating
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.373-374.89.pdf
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Comparative Study of 321 Stainless Steel and 321-Al Composite Coatings Deposited by Arc Spraying Process (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 373-374 (Mar. 2008), p. 19-22 
    Details
    ISSN: 1013-9826
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: A new type of composite coating (321—Al coating) was prepared by using the 321austenitic stainless steel wire feed stock as the anode and aluminum wire as the cathode in arcspraying process. In order to compare with the new composite coating, the traditional 321 coatingwith twin 321 stainless steel wires was fabricated. The microstructure and wear resistance of thecoatings were characterized by means of scanning electron microscopy (SEM), X-ray diffraction(XRD), energy dispersion spectroscope (EDS) and MM-200 ring-block type sliding wear tester.Results showed that, except for the aluminum phase addition in the 321—Al coating, no other extraphases produce in comparing with the 321 coating. However, due to the additional aluminum, the321—Al coating performs quite different microstructure characteristics and tribological behavior.The oxygen content and microhardness of the 321—Al coating are lower than that of the 321coating, but wear losses are pretty much under the oil lubricated sliding condition. The effect of themicrostructure on the wear behavior of the 321—Al coating was also discussed, which is mainlyrelevant to the characteristic of “ductile aluminum and hard stainless steel composite phasesinter-depositing”
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.373-374.19.pdf
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Corrosion Protection of A3 Steel with Zn-Al-Mg-RE Coating from Arc Spraying (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 373-374 (Mar. 2008), p. 64-68 
    Details
    ISSN: 1013-9826
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Maschinenbau
    Notizen: Cored wires and high velocity arc spraying (HVAS) technologies have been applied toproduce Zn-Al-Mg-RE coating on A3 steels. The durability of coating in terms of corrosionresistance is the focus of this paper. The detailed degradation mechanism has been investigated usingelectrochemical-monitoring techniques supported by precise pre-test and post-test microscopicalexamination using Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD).Zn-Al-Mg-RE coating shows a typical aspect of layered heterogeneous structure, the existing ofZnAl2O4 and MgAl2O4 implies the good anti-corrosion feature. The polarization curves showed thatZn-Al-Mg-RE coating exhibits passive behavior at 0.5h and 16h immersion, but at 600h, it begins todissolute. In contrast, the anti-corrosion performance isn’t cut down. The corrosion potential movesto the noble direction step by step, along with the current density drops gradually. After corrosion, ithas been observed that the coating surface is jointed by flaky lamellar products and dense withoutobvious defects and pores. It is postulated that with the addition of RE, the porosity of the coating isreduced, meanwhile, the stability of the products layer can reinforce the self-sealing effect of thecoating distinctively
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.373-374.64.pdf
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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