The piston ring made of stainless steel will have not only best wearability and corrosion resistance,but also will have much lower friction factor (than that of high-strength cast iron piston ring),after gas-nitridation treatment or metal physical deposition treatment is done when the surface hardness of the ring will reach Hv1 000 ~1 200.
In glow discharge, conventional polyvinylchloride (PVC) membrane is modified by depositing plasma polymer of C_2H_2/CO_2 /H_2 onto PVC membrane surface.
Nonetheless, greater rates of net nitrification were insufficient to produce the 10-fold observed increase in NO3- export, suggesting that much of the exported NO3- resulted directly from the NO3- deposition treatment.
Results reported in this paper demonstrate the influence of the temperature and humidity during post-deposition treatment on the network development and densification.
The present article in troduces a new technique of chemical vapour deposition titanium Carbide. The technique is employed to treat the deposition of several common tool materials. The microstructures and propertuies of the deposited titanium Carbide layer are investigated by the use of metallographic observation X-ray structural analysis and X-ray spectrochemical micro analysis. This method is safe, economical and easy to adopt with conventional heat treating equipment. Applied to some dies and easily worn-...
In glow discharge,Polycarbonate (PC) membrane is modified bydepositing plasma polymer of C_2H_2/CO_2/H_2 onto PC membrane surface.The morphology and structure of the modified membrane are observedby IR,SEM,element analysis.The modified membrane is then tested forpermeation experiment and thermalstability.
In glow discharge, conventional polyvinylchloride (PVC) membrane is modified by depositing plasma polymer of C_2H_2/CO_2 /H_2 onto PVC membrane surface. The morphology and structure of the modified membrane are observed by TEM amd FTIR Photoacoustic Spectra. The static contact angle of the membrane is measured. From the contact angle values, the interracial free energy between the membrane and water, surface free energy of the membrane and adhesive work are calculated. Moreover, the thermalstability of modi...