Abstract: Method of forming different diffusion aluminide coatings on different surface regions of the same superalloy substrate involves positioning the substrate in a coating chamber having a aluminum-bearing coating gas flowing therein with a first substrate surface region enclosed in a masking enclosure having one or more coating gas entrance apertures communicating the interior of the enclosure to the coating gas in the coating chamber and with a second substrate surface region freely communicated to the coating gas in the coating chamber, and gas phase aluminizing the substrate by heating the substrate to an elevated coating temperature in the coating chamber having the coating gas therein to concurrently form an outwardly-grown diffusion aluminide coating on the first substrate surface region and to form an inwardly-grown, diffusion aluminide coating on the second substrate surface region of the same substrate.

Abstract: An assembly is disclosed that facilitates monitoring one or more aircraft that are on the ground at an airport or other facility. The assembly includes a web based camera that can pan, tilt and zoom, as well as a base that can pan independent of the movement of the camera. The assembly can be selectively affixed to any aircraft service vehicle, such as a fuel truck, to monitor one or more the craft during processes such as fueling, baggage or passenger unloading, and the like. The camera can be operated remotely and/or from the service vehicle to provide relatively constant surveillance of the aircraft. The camera is housed within a protective environmental chamber so that the assembly can be utilized outdoors substantially indefinitely.