ISSN:
1662-9752
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:
An electrolytic sulfurization at room temperature has been introduced in the present work,which process parameters are optimized to the quenched Cr12 substrate. Morphology andmicrostructure of the sulfide layers are investigated deeply, and their formation mechanism is discussedin detailed. According to optimum parameter of sulfurizing process ( assistant current density of1.8A/dm2, the saturated rare-earth-halide solution containing 300g Na2S2O3, 60g KHSO3 and 1000mlH2O, 298K/20~40min), the ferrous sulfide coating was easily obtained on the quenched Cr12 substratewith a uniform thickness of above 10μm, no matter about the treated parts with the complexgeometrical shapes. The tribological experiment results of a block-on-ring tribometer indicate that thesulfide coatings on hard substrate have a very low friction coefficient and could obviously reduce thewear extent of its counterpart. Compared with the traditional low-temperature process, this sulfurizingtechnology has such virtues as simple process, heatless, low cost, little deformation, without pollutionquestion, etc., which could be employed for industrial solid lubricant due to the good friction-reducingcharacteristic of lamellar-structure FeS phase
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.1236.pdf
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