摘要:

AbstractThis paper looks at the speciality application field of precision mechanisms, the tribological regime under which they operate, and the consequent requirements for precision lubricants. These include low evaporation rate, good drop cohesion, high ageing stability, resistance against contamination, and particularly an inertness in relation to polymers and lacquers.The range of lubricants available today is reviewed in relation to these requirements and to the materials likely to be used in precision instruments and mechanisms, and it is concluded that since no one lubricant can solve all the problems encountered in specific mechanisms, the selected lubricant is a compromise.

ISSN:0265-6582    

DOI:10.1002/jsl.3000050202

出版商:John Wiley&Sons, Ltd    

年代:1988

数据来源: WILEY

摘要:

AbstractA ferrofluid is a colloidal suspension of up to 10% magnetic particles in a carrier fluid, which may be mineral or synthetic. The resultantfluids have many applications, for example where a magnetic field is present. A study was conducted of the effects of the nature of the carrier fluid and particle diameter on the viscosity build‐up characteristics of the ferrofluid in the presence of a magnetic field, and the results are presented. Tests were also carried out on a 4‐ball mach

ISSN:0265-6582    

DOI:10.1002/jsl.3000050203

出版商:John Wiley&Sons, Ltd    

年代:1988

数据来源: WILEY

摘要:

AbstractThe friction of various composites is generally little dependent upon the roughness. When the composites contain glass or carbon fibres, their wear rates are also little dependent upon the roughness. However, the wear rates of PTFE incorporating MoS2, graphite or bronze and polyacetal incorporating PTFE increase rapidly as the roughness increases beyond a certain critical value characteristic of each of these composites. The roughness‐dependency of the wear rate is markedly affected by the transfer during slidin

ISSN:0265-6582    

DOI:10.1002/jsl.3000050204

出版商:John Wiley&Sons, Ltd    

年代:1988

数据来源: WILEY

摘要:

AbstractThe versatility of a differential scanning calorimetry (DSC) cell in studying thermal and/or thermal‐oxidative degradation of lubricants is shown using ester‐based aviation turbine oils as an example.The following applications are discussed: 1. quality control of fresh and used oils by pressure differential scanning calorimetry; 2. influence of metal catalysis on oil degradation; 3. identification of volatile degradation products by PDSC gas chromatography‐mass spectrometry via a TENAX trap; 4. determination of spontaneous ignition temperatures; 5. influence of metall metal oxides, wear debris and oil degradation products on ignition behaviour; 6. inhibition of spontaneous ignition by antioxi

ISSN:0265-6582    

DOI:10.1002/jsl.3000050205

出版商:John Wiley&Sons, Ltd    

年代:1988

数据来源: WILEY

ISSN:0265-6582    

DOI:10.1002/jsl.3000050206

出版商:John Wiley&Sons, Ltd    

年代:1988

数据来源: WILEY

摘要:

AbstractA selection of future meetings of interest to the lubricants community. for further details, readers should apply to the address given. Information on forthcoming lubricants conferences is welcome for inclusion in this section.

ISSN:0265-6582    

DOI:10.1002/jsl.3000050207

出版商:John Wiley&Sons, Ltd    

年代:1988

数据来源: WILEY

ISSN:0265-6582    

DOI:10.1002/jsl.3000050208

出版商:John Wiley&Sons, Ltd    

年代:1988

数据来源: WILEY

ISSN:0265-6582    

DOI:10.1002/jsl.3000050201

出版商:John Wiley&Sons, Ltd    

年代:1988

数据来源: WILEY