Misting-free diamond surface created by sheet electron beam irradiation

Abstract

We developed a diamond surface that does not mist near the room temperature under a saturated humidity atmosphere, by sheet electron beam irradiation (SEBI) treatment. SEBI treatment decreased the time to clear vision of the diamond surface. Following SEBI treatment for 1.91 s (= 0.72 MGy) to a diamond surface, the time to clear vision was less than 2 s. The effective duration time was a few hours. Based on the results of the size distribution of the drops on the misting-free diamond surface following blowing for 3 s, we proposed an explanation for the short time to clear vision of the diamond surface treated by SEBI.

Adhesion of Polyethylene/Polyethylene Terephthalate (PE/PET) Laminated Sheets by Homogeneous Low Potential Electron Beam Irradiation (HLEBI) Prior to Assembly and Hot-Press above Melting Point

“…According to past studies in our group, HLEBI improves the mist resistance and wetting of inorganic materials, 4) and increases polymer adhering to glass bers raising impact strength in GFRP. 5) Applying surface treatment of low dose of electron beam irradiation on the order of 0.01 to 1 MGy has been gaining momentum as a successful method to adhere polymeric materials without the use of glues.…”

Effects of Electron Beam Irradiation on Charpy Impact Value of GFRP

“…[3][4][5][6][7][8][9][10][11][12] The specimen is homogeneously irradiated with the sheet electron beam irradiation with low energy through a titanium thin film window attached to a 240 mm diameter vacuum chamber. A tungsten filament in a vacuum is used to generate the electron beam at a low energy (acceleration potential, V: kV), of 170 kV and irradiating current density (I, A/m 2 ) of 0.089 A/m 2 .…”

“…Although influences of high energy electron beam irradiation on the fracture toughness of FRP have been reported, 3) no one has succeeded the strengthening of carbon fiber reinforced polymer (CFRP). On the other hand, low energy sheet electron beam (EB) irradiation often induces hardening, high wear resistance and sterilization, [4][5][6][7] In addition, the irradiation has improved not only the bending fracture strain of carbon fiber, 8) but also the deformation resistivity, strength and fracture strain during static tensile testing. 9) Our recent publication has succeeded in showing that the EB-irradiation with low energy enhances the fracture stress during static bending testing, 10) tensile strength 11) and the dynamic fracture toughness evaluated by impact value 12) for CFRP.…”

High Adhesive Force between Laminated Sheets of Copper and Polyurethane Improved by Homogeneous Low Energy Electron Beam Irradiation (HLEBI) Prior to Hot-Press

“…The Cu/PU adhesion by both hot-press and its strengthening method treated by homogeneous low energy electron beam irradiation (HLEBI) prior to hot-press has been found. HLEBI improves the mist resistance and wetting of inorganic materials, 3) and increases polymer adhering to glass fibers raising impact strength in GFRP. 4) Improvements are mainly caused by the irradiation with the formation of dangling bonds at terminated atoms in polymers.…”