18-04-2013 | Gaiqing Zhao, Qin Zhao, Weimin Li, Xiaobo Wang, Weimin Liu, Tribotest, 2013

ABSTRACT Nano‐calcium borate (NCB) with an average particle size of about 70 nm was synthesised via ethanol supercritical fluid drying technique, and the morphology and microstructures of as‐prepared particles were characterised by means of scanning electron microscope (SEM, JEOL LTD., ...

more

12-04-2013 | Liviu E. Mirci, Alina Pătrut, Tribotest, 2013

ABSTRACT The paper presents results concerning the synthesis and characterisation as lubricants with biodegradability potential of some complex tetraesters realised on the basis of adipic acid and different glycols such as (mono) ethylene, 1,3‐propylene, 1,4‐butylene, 1,5‐pentamethylene, ...

more

03-04-2013 | Bhawna Khemchandani, A.K. Jaiswal, E. Sayanna, Maria Forsyth, Tribotest, 2013

ABSTRACT Biodegradable industrial lubricant applications are gaining popularity with growing environmental concern and stringent government regulations. Plant oils are major base stocks for eco‐friendly green lubricants. However, because of their poor oxidation stability, their ...

more

20-03-2013 | Ilya I. Kudish, Tribotest, 2013

ABSTRACT The paper is devoted to the application of the early developed asymptotic approach to solution of the steady isothermal problem of elastohydrodynamic lubrication (EHL) for heavily loaded point contacts with skewed direction of entrained lubricant. It is shown that the whole ...

more

19-02-2013 | Matthew Appleby, Fred K. Choy, Li Du, Jiang Zhe, Tribotest, 2013

ABSTRACT This paper aims at the development of a comprehensive procedure for detecting oil debris contents, as well as analysing other physical parameters associated with lubricating oil degradation, using a combination of ultrasonic, capacitance and inductance‐based measurements. Brief ...

more

18-02-2013 | David E. P. Gonçalves, Carlos M. C. G. Fernandes, Ramiro C. Martins, Jorge H. O. Seabra, Tribotest, 2013

ABSTRACT In this study, four different fully formulated ISO VG 320 wind turbine gear oils were select: a mineral oil‐based, a polyalphaolefin‐based, an ester‐based and a polyalkyleneglycol‐based fluids. Their physical properties (viscosity, thermoviscosity, piezoviscosity etc.) were ...

more

15-02-2013 | Koji Takiwatari, Hidetaka Nanao, Shigeyuki Mori, Tribotest, 2013

ABSTRACT In this work, we have investigated the infrared spectra of polar lubricant in order to explore the molecular interaction under high pressure and temperature conditions using diamond anvil cell. Polypropylene glycol and oleic acid were used as base oil and additive, respectively. ...

more

15-02-2013 | Vladimir Totolin, Marcello Conte, Edurne Berriozábal, Francesco Pagano, Ichiro Minami, Nicole Dörr, Josef Brenner, A ..., Tribotest, 2013

ABSTRACT A tribological investigation of two ionic liquids (ILs) that could be used as potential lubricants for vacuum or space applications is presented. Their tribological behaviour was evaluated using a ball‐on‐flat oscillating reciprocating motion CaTri ultra‐high vacuum (UHV) ...

more

29-01-2013 | Dan Qiao, Haizhong Wang, Dapeng Feng, Tribotest, 2013

ABSTRACT Four novel benzimidazolyl phosphates (BPs) were synthesized and evaluated as anti‐wear additives in poly(ethylene glycol) for steel/steel contacts. The friction experiments were carried out on an Optimol SRV‐I oscillating reciprocating friction and wear tester (SRV) both at room ...

more

28-01-2013 | Ilya I. Kudish, Tribotest, 2013

ABSTRACT The paper is devoted to the development of an asymptotic approach to solution of the steady isothermal problem of elastohydrodynamic lubrication (EHL) for heavily loaded point contacts. It is shown that the whole contact region can be subdivided into three subregions: the central ...

more