Tribological tests of samples of dental materials with a protective coating of silicon carbide called "pantsyr"

Abstract

Tribology tests of standards in the conditions of the Proof-of-concept laboratory offunctional surfaces covered and uncovered by sheeting «Armour» from the carbide of silicon was conducted by the method of the measuring skidding on the automated machine of friction(tribometer) of TRIBOMETER of firm CSM Instruments. The results of tribology tests treated by means of the computer program Instrum X (CSM Instruments, Switzerland). Profilometric research offurrows of wear on separate standards with coverage and without him with the purpose of determination of area of section of furrows for a subsequent calculation the brought wear over of standards conducted on the opticalprofilometer of WYKO NT1100firm Veeco(THE USA), Among studied it is necessary to distinguish a standard without coverage (Kvadrotti) and with coverage (Plastic(Ftoraks)), that at the indicated terms of tests showed very subzero(less than 0,1) constant of friction at his insignificant amplitude. It testifies to set constant of friction that did not almost change during all experiment (15 000 cycles equal to the year of the use of prosthetic appliance a patient For the best standard (Plastic (Ftoraks)), the brought wear over, that made 9*10 -6mm 3/(H*m). The same standard without coverage showed a wear more than twice higher ((1,4-0,9)/0,9), was expected.

Keywords

silicon carbide / protective coating / friction / tribology tests

References

[1] Петржик М.И., Левашов Е.А. Современные методы изучения функциональных поверхностей перспективных материалов в условиях механического контакта. Кристаллография. 52(6): 1002-10.

[2] ASTM G99-05(2010) Standard Test Method for Wear Testing with a Pin-on-Disk Apparatus.

[3] ASTM G133-05(2010) Standard Test Method for Linearly Reciprocating Ball-on-Flat Sliding Wear.

[4] DIN50324 Measuring Friction and Wear: Model Experiments on Sliding Friction in Solids (Ball on Disc System).

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