Abstract: Determining the presence of a corrosion inhibitor on exposed surfaces during manufacture of a microelectronic device subjected to one or more cleaning operations using a cleaning solution containing a corrosion inhibitor where a subsequent manufacturing or handling step requires no corrosion inhibitor residue on the device. A sacrificial copper test piece or coupon is subjected to the cleaning operation along with the device is exposed to hydrogen sulfide gas. The degree of color change in the surface of the copper test piece is a qualitative means of indicating the presence or absence of a corrosion inhibitor residue on exposed copper surfaces of the microelectronic device.

Abstract: Methods are provided for inhibiting the corrosion of metals in contact with aqueous systems. Sulfono benzotriazole compounds or their salts are added to these aqueous systems to inhibit the corrosion of metal, such as iron surfaces present in cooling water systems.

Abstract: This invention relates to a method of transporting and inhibiting the deposition of copper and copper-containing metals on metal surfaces in steam generating systems. This method utilizes a sulfono benzotriazole compound or salt thereof as the treatment agents.

Abstract: A method for inhibiting the corrosion of copper or copper-bearing metals in contact with an aggressive aqueous environment by combining a copper corrosion inhibitor with a chelant. Azoles are employed as the corrosion inhibitor. Characteristic chelants include ethylenediamine tetracetic acid nitrilotriacetic acid, citric acid, tartaric acid and dialkyldithiocarbamates.

Abstract: A method of providing a durable, long lasting chemically resistant, pH tolerant, corrosion inhibiting film on the surfact of copper or copper containing metal in contact with an aggressive aqueous system is disclosed. The copper or copper containing metal generally composes a structure of dynamic cooling water system, and protection is afforded thereto by intermittently feeding to the aqueous medium a sufficient amount of a C.sub.3 to C.sub.6 alkyl substituted benzotriazole.

Abstract: A method of inhibiting corrosion and controlling deposition in aqueous mediums, such as in cooling water systems, wherein iron containing well water is used as a water make-up source, is disclosed. The method comprises addition of certain water soluble acrylic acid type/allyl hydroxy propyl sulfonate ether copolymers to the desired aqueous medium.

Abstract: Polyvinyl alcohol fibers having needle-like crystals of colloidal clay, especially attapulgite or sepiolite clay, disseminated therein in amount within the range of from 30% to 75% of the dry weight of the fibers. The composite fibers are capable of being partially or totally substituted for cellulose fibers in the making of paper products by conventional paper-forming means.