Abstract:
An electrodischarge apparatus has a nozzle (8, 18) that includes a discharge chamber that has an inlet for receiving water and an outlet. The apparatus has a first electrode (11) extending into the discharge chamber that is electrically connected to one or more high-voltage capacitors. A second electrode is proximate to the first electrode (11) to define a gap between the first and second electrodes (43). A switch causes the one or more capacitors to discharge across the gap between the electrodes to create a plasma bubble which expands to form a shockwave that escapes from the nozzle (8, 18) ahead of the plasma bubble.
Abstract:
An electrodischarge apparatus has a nozzle (8, 18) that includes a discharge chamber that has an inlet for receiving water and an outlet. The apparatus has a first electrode (11) extending into the discharge chamber that is electrically connected to one or more high-voltage capacitors. A second electrode is proximate to the first electrode (11) to define a gap between the first and second electrodes (43). A switch causes the one or more capacitors to discharge across the gap between the electrodes to create a plasma bubble which expands to form a shockwave that escapes from the nozzle (8, 18) ahead of the plasma bubble.
Abstract:
The present invention provides an iron alloy article having an excellent bonding force between a resin and an iron alloy using an lkoxysilane-containing triazinethiol, and a method for producing the iron alloy article. Disclosed is an iron alloy article including a base composed of iron or an iron alloy, and a resin bonded to at least a portion of a surface of the base through a dehydrated silanol-containing triazinethiol derivative coating, the iron alloy article further including a metal compound film containing at least one selected from the group consisting of a hydroxide, a carboxylate, a phosphate, a sulfate, a thiosulfate, a chloride and a perchloride between the base and the dehydrated silanol-containing triazinethiol derivative coating.
Abstract:
A method of prepping a surface using a high-frequency forced pulsed waterjet apparatus (10) comprises the steps of: generating a high-frequency signal having a frequency f using a high-frequency signal generator (20), applying the high-frequency signal to a transducer (60) having a microtip (70) to cause the microtip (70) of the transducer (60) to vibrate to thereby generate a forced pulsed waterjet through an exit orifice (80) of a nozzle (40) having an exit orifice (80) diameter d and a length L. The forced pulsed waterjet prepares the surface to within a predetermined range of surface roughness. The surface roughness is determined by selecting operating parameters comprising a standoff distance (SD), a traverse velocity V TR of the nozzle (40), a water pressure P, a water flow rate Q, a length-to-diameter (L/d) ratio, a microtip-to-orifice distance (a), the frequency f, and an amplitude A of the high-frequency signal.
Abstract:
An innovative method of prepping a surface entails entraining a coating particle into a fluid stream, directing the fluid stream containing the coating particle at the surface to be prepped to thereby prep the surface using the coating particle. The prepped surface can then be coated using the same or substantially similar coating particle. This method can be used with a continuous airjet, a forced pulsed airjet, a continuous waterjet or a forced pulsed waterjet as the carrier stream. This invention solves the problem of foreign blasting particles becoming embedded in the atomic matrix of the surface to be prepped, which can result in unpredictable behaviour of the surface properties and even catastrophic failure.
Abstract:
A method for measuring at least one molecular characteristic of an iron-saccharidic complex present in a composition comprising one or more excipients, said complex comprising at least one active hematinic species (AHS), said method comprising: (A) using a first portion of said composition and substantially separating said AHS from said one or more excipients to obtain purified AHS; (B) determining the differential refractive index increment (dn/dc) of said purified AHS, (C) subjecting a second portion of said composition to liquid chromatographic analysis (LCA) having a refractive index (RI) detector and in-line eluate stream detection using laser light scattering (LLS); and (D) calculating said at least one molecular characteristic based on said LCA and said dn/dc value.