Abstract: Glass particles (14) are mixed within an uncured silicone resin (13). The fluid uncured resin is placed in a portion of a terminal block (11) and cured to form a gel (13') by subjecting it to microwaves in a microwave oven (22). Conductors (25, 26) to be interconnected are next inserted into the cured silicone gel and interconnected. The cured gel containing the glass particles thereafter constitutes a dependable insulator for the conductors, particularly the portions of the conductors that are interconnected.

Abstract: An apparatus for the accelerated testing of the corrosion resistance of a plurality of parts in an isolated environment is disclosed including a horizontally disposed support bar from which the parts to be tested depend. A reservoir of corrosive liquid media is located vertically below the support bar and a drying zone is located above the reservoir wherein the temperature is controlled within plus or minus 10.degree. C. The test unit is operated by reciprocally driving the support bar such that when the bar is in its lowermost position the parts are immersed in liquid corrosive media and when the bar is in its uppermost position the parts are in the temperature controlled drying zone. Controls are also provided to selectively retain the parts in the corrosive media and in the drying zone for predetermined, repetitive periods of time.

Abstract: The present invention relates to powder metal articles that can be successfully welded to ferrous base materials. A formed part having an initial part density of at least 5.8 grams per cubic centimeter subsequently compressed is to at least ninety-two per cent (92%) of theoretical full density at a controlled area, including a contact area at which the part is adapted to be welded to the other material and at least a 0.025 inch wide margin of the surface laterally contiguous the contact area to a subsurface depth of at least 0.025 inch while retaining the initial part density throughout the balance of the article. Such increased densification is accomplished by applying inwardly directed, localized surface pressure against the controlled area of a formed powder metal part.