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  • 1
    Electronic Resource
    Electronic Resource
    Wear Properties of Y-TZP Ceramics Dispersed with Second Phase Particles (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 368-372 (Feb. 2008), p. 744-747 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The wear properties of ADZ (alumina dispersed in Y-TZP) and MDZ (mullite dispersed inY-TZP) were investigated by using a ring-on-block tribometer. The results showed that for Y-TZPceramic, the addition of alumina phase (with 10-20% in mass fraction) leads to an improved wearresistance. With the increase of the normal load, the wear rates of ADZ ceramics increase. Under low andmedium normal load (100N and 300N), the wear resistance is controlled by the hardness of ceramics, andunder high normal load (500N) the fracture toughness is obviously contributed to the wear resistance ofthe ceramics. For MDZ ceramic, the wear resistance of 15MDZ (15wt% mullite dispersed in Y-TZP) isbetter than that of 20 MDZ (20wt% mullite) under the normal load from 100 N to 500 N. The mechanicalproperties of 15MDZ are worse than that of Y-TZP ceramic, but the wear resistance is enhanced due tothe action of “needle roller bearing” of the fractured rod-like mullite particles
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.744.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Preparation of Silicon Dioxide Fiber via Sol-Gel Process (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 368-372 (Feb. 2008), p. 794-796 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Silicon dioxide gel fibers were prepared by hydrolysis reaction of tetraethyl orthosilicate(TEOS). TEOS was used as basic materials, anhydrous ethanol (EtOH) as solvent and hydrochloric acid(HCl) as the catalyst. The best proportion of the chosen materials (TEOS, EtOH, H2O and HCl) was1:1:1.5:0.03(molar ratio).Gel fibers were investigated by thermogravimetry (TG). Silicon dioxide fiberswere obtained by treating the gel fibers at different temperatures. The calcined fibers were characterizedby scanning electron microscopy (SEM). The optimal sintering schedule was obtained. Silicon dioxidefiber dried at 200°C for 1 hour then calcined at 800°C for 3 hours was the best
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.794.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Wear Properties of Basalt Fibers Reinforced Composites (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 368-372 (Feb. 2008), p. 1010-1012 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Compared to traditional fiberglass, basalt fibers have a wide spectrum of applications used astextile fiber or reinforcement for composites. Epoxy resin composites filled with basalt fibers wereprepared by proper curing, using KH-550 silane coupling agent to enhance the interfacial bondingbetween the inorganic reinforcing agent and the polymer matrix. The milling abrasive wear was investigatedin slurry containing sand abrasive particles using milling equipment. The experimental resultsindicated that basalt fibers, EP and the nano-sized SiO2 filling formed steady composites. The wear rate ofthe sample was reduced with the increase of resin content before the content of resin amounted to 40%.When the content of resin is more than 40%, the wear rate of the sample deceased slightly
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.1010.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of Testing Parameters on Wear Properties of Alumina Strengthen 3Y-TZP Ceramics (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 336-338 (Apr. 2007), p. 2468-2471 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The wear behaviours of alumina strengthen 3Y-TZP ceramics worn against high chromiumcast iron under various testing conditions were investigated using a block-on-block tribometer. Theresults showed that the wear rate increases with the increasing of the load and the sliding time. Under thelow load the main mechanism governing the wear properties of ceramic is the apparent plasticdeformation and ploughing, and the wear rate rapidly increases and the wear mechanism changes intobrittle fracture under high load. Meanwhile the wear resistance is depended on the properties of theabrasive particle. As expected, the wear resistance was increased with decreasing hardness of abrasiveparticle, but it was also influenced by the morphology, that is, the sharper the abrasive particle the higherwear rate
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.2468.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    〈sub〉〈/sub〉Preparation and Wet Erosive Wear Characteristics of Porous Al〈sub〉2〈/sub〉O〈sub〉3〈/sub〉 Ceramics (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 336-338 (Apr. 2007), p. 2458-2461 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Porous Al2O3 ceramics were produced by a dry pressing technique and their characteristicswere assessed. In terms of their microstructure the results showed that the open porosity varies with thetype of pore-making agents. The open porosity is increased but fracture strength is decreased with anincrease in the amount of pore-making agent. The fracture strength of Al2O3 ceramic matrix is increasedby adding 5-15wt% ZrO2 particles (ZTA). In terms of their wet erosive wear characteristics the resultsfrom liquid-solid impinging jet tests can be used to determine the weak aspects of their microstructure.From examination of worn surfaces it is apparent that grain pull-out is the dominant mechanism of erosivewear. For the porous ceramics, wet erosive wear rate depends on strength, porosity and pore size. Forporous Al2O3 ceramics having the same level of porosity, the larger the biggest pore size the higher theerosive wear rate. ZTA composite ceramic has a higher erosive wear resistance than that of Al2O3 ceramicwith an equivalent level of porosity primarily due to its higher strength
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.2458.pdf
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