Preparation and evaluation of electrocatalytic oxide coatings on conductive carbon-polymer composite substrates for use as dimensionally stable anodes

1996 ◽  
Vol 26 (11) ◽  
Author(s):  
A. Brungs ◽  
V. Haddadi-Asl ◽  
M. Skyllas-Kazacos
Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5491
Author(s):  
Joanna Korzekwa ◽  
Elżbieta Bociąga ◽  
Dariusz Bochenek

The tribotesting of friction systems requires discussion on proper selection of its conditions and data presentation. System tribology is based, for example, on analysis of the friction contact, the roughness of the cooperating surfaces, and the wear rate of the rubbing elements or coefficient of friction in relation to the sliding distance. Friction pairs, consisting of an aluminum alloy sample with an oxide layer (Al2O3) with and without the addition of inorganic fullerenes like tungsten disulphide (IF-WS2) nanoparticles on its surface cooperating with a counter-sample made of polymer composites prepared on the basis of phenol-formaldehyde resin with different fillers, were tested using a device with a pin-on-plate friction pair system. The results of the experiments showed sufficient durability of the Al2O3 and Al2O3/IF-WS2 oxide coatings in combination with the polymer composite. It was found that resin fillers such as cotton fibers, jute fibers, molybdenum disulphide (MoS2) or graphite (C) influence the friction behavior of the tribological pairs. Although the values of the coefficient of friction obtained in the tests were quite high, their course during the tests ensured stable cooperation of the aluminum coating/polymer composite friction pair on a 15 km distance, under a load of 0.5 MPa. The lowest coefficients of friction were obtained for oxide layers formed on aluminum combined with a polymer composite filled with cotton fibers and graphite. These studies provide information on the tribological properties of commercially available polymer composites cooperating with the produced oxide coatings, supplementing the available literature with the results of research on new, so far unexplored tribological partners. Microscopic investigation of the structure and morphology of the formed surface oxide layers and also microgeometry studies of both the friction elements were used to better understand the obtained research results.


Author(s):  
P.J. Schubel ◽  
L.T. Harper ◽  
T.A. Turner ◽  
N.A. Warrior ◽  
C.D. Rudd ◽  
...  

1970 ◽  
Vol 23 (02) ◽  
pp. 202-210 ◽  
Author(s):  
R Bishop ◽  
H Ekert ◽  
G Gilchrist ◽  
E Shanbrom ◽  
L Fekete

SummaryA new fibrin plate technic for evaluating components of the fibrinolytic system has been developed. It provides quick, accurate, and easily interpreted results for the fibrinolytic profile. The standardized human plasminogen-free fibrin plates can be produced in bulk and stored for prolonged periods of time. A test specimen placed in a well punched in the buffered agarose gel diffuses into the agar and lyses the fibrin clot, forming a clear reaction zone. The zone diameter is directly proportional to the log of the percent concentration of available fibrinolytic enzyme in the specimen. The plates may be used to quantitate total plasminogen, and estimate available plasmin and active plasmin. A good correlation between results obtained using these fibrin plates and caseinolytic methods was found. Performance and interpretation of tests of fibrinolysis done on these new fibrin plates indicate that it may be the most sensitive technic available for clinical laboratory work.


2016 ◽  
Vol 2 (2) ◽  
pp. 37-42 ◽  
Author(s):  
E. N. Kablov ◽  
L. V. Chursova ◽  
A. N. Babin ◽  
R. R. Mukhametov ◽  
N. N. Panina

Sign in / Sign up

Export Citation Format

Share Document