Characteristic Transformation of Lubricating Grease Caused by Cooling Conditions from Melting Temperature

Correlation between System Entropy and Structural Changes in Lubricating Grease

Lubricating greases are colloid disperse systems consisting of a base oil and a thickener (additional additives). The lubricant is modeled as a tribological system, and the reaction of a fluid friction stress is investigated. The energetic situation of the volume element is analyzed and the system entropy described. The description of the structural degradation and the used entropy was realized...

Chronic Granuloma of the Orbit Caused by Grease-gun Injury.

Case Report A motor cycle mechanic aged 39 years sustained an injury to the inner corner of the left eye with a jet of oil from a grease-gun. In spite of considerable bruising of the lids and conjunctiva, discomfort in the eye was minimal, so he was not referred to Moorfields until 4 days after the accident. Examination.-The right eye was found to be normal and the visual acuity 6/6 unaided. In...

High Temperature Self-Lubricating Materials

Grease Noise in Ball Bearings Noise generation in bearings and its effect, influence of the lubricating grease, grease noise tester, test procedure and requirements

The essential customer needs of today, namely long bearing service life and low noise performance, demand the availability of a means to verify that the required cleanliness level and lubrication conditions are fulfilled. To fulfil these needs, a new equipment, the SKF BEQUIET+ tester has been developed to assess the quality of the lubricant with regard to cleanliness and damping characteristic...

Solid-solid phase transformation via virtual melting significantly below the melting temperature.

A new phenomenon is theoretically predicted, namely, that solid-solid transformation with a relatively large transformation strain can occur through virtual melting along the interface at temperatures significantly (more than 100 K) below the melting temperature. The energy of elastic stresses, induced by transformation strain, increases the driving force for melting and reduces the melting tem...