Abstract: A composition of an exothermic mixture suitable for a cladding process, comprising at least one transition metal oxide and at least one fuel, wherein the fuel is at least a binary mixture selected from the group of aluminium, calcium, magnesium or silicon. The invention is furthermore directed to a process for producing corrosion resistant alloy clad metal pipes by loading and distributing the exothermic mixture to one or more pipes in a clad assembly, followed by igniting the exothermic mixture and applying a post cladding pipe procedure.

Abstract: The present invention relates to a process for producing corrosion resistant alloy-clad metal pipes by: (a) providing one or more pipes to be clad; (b) providing an exothermic mixture; 5 (c) loading and distributing the exothermic mixture into the one or more pipes in a cladding assembly at a rotational speed suitable to generate a centrifugal force of at most 10 times the gravitational force; (d) igniting the loaded exothermic mixture using an ignition system at a rotational speed generating a centrifugal force of at least 50 times the gravitational force; 10 and (e) applying a post cladding pipe procedure.

Abstract: A method of forge welding includes placing at least two components for welding together, adjacent each other and with an exothermic flux mixture placed between the components. The exothermic flux mixture is heated to initiate an exothermic reaction and the faying surfaces of the two components are pressed together. The components being welded may be tubular, in particular pipes. Apparatus for the method of forge welding and exothermic flux mixtures for the method of forge welding are also provided.

Abstract: A method of forge welding includes placing at least two components for welding together, adjacent each other and with an exothermic flux mixture placed between the components. The exothermic flux mixture is heated to initiate an exothermic reaction and the faying surfaces of the two components are pressed together. The components being welded may be tubular, in particular pipes. Apparatus for the method of forge welding and exothermic flux mixtures for the method of forge welding are also provided.

Abstract: An exothermic reaction mixture for joining metallic components includes at least one transition metal oxide and, as fuel, a mixture of aluminium and calcium suicide, wherein the molar ratio of aluminium to calcium suicide is from 16:1 to 0.25:1. Methods of preparing the exothermic reaction mixtures and for using them in welding applications are also described.

Abstract: The present invention is directed to the preparation of in-situ formation of a series of glass-ceramic composites by the Self-propagating High temperature Synthesis (SHS) technique with advantages of processing simplicity as well as the potential of cost savings. The materials produced by the technique contain crystalline TiB2 phase and have either a pure glassy matrix or a glass matrix with partial devitrification based on the Al2O3—CaO system. The materials can potentially be used for infrared light transmission and for other high temperature applications. These materials can also be produced with relatively high porosity.

Abstract: The present invention is directed to the preparation of in-situ formation of a series of glass-ceramic composites by the Self-propagating High temperature Synthesis (SHS) technique with advantages of processing simplicity as well as the potential of cost savings. The materials produced by the technique contain crystalline TiB2 phase and have either a pure glassy matrix or a glass matrix with partial devitrification based on the Al2O3—CaO system. The materials can potentially be used for infrared light transmission and for other high temperature applications. These materials can also be produced with relatively high porosity.

Abstract: In-situ formation of a series of glass-ceramic composites by the Self-propagating High temperature Synthesis (SHS) technique. Advantages include processing simplicity and cost savings. The materials processed by the technique either have a pure glassy matrix (Al2O3—B2O3—MgO) or a glass matrix with partial devitrification, and crystalline TiB2 particles having a size of about 0.5 &mgr;m. The material can be prepared either in inert atmosphere inside a reaction chamber or in air without a chamber. The materials exhibit relatively high porosity and good strength and can be used as filters, thermal insulation materials or in other similar applications.

Abstract: In-situ formation of glass-ceramic composites by the Self-propagating High temperature Synthesis (SHS) technique. The reagents used are: TiO.sub.2, B.sub.2 O, Al, Ti, B and MO where MO represents BaO, MgO, CaO and other similar oxides. BaCO.sub.3 may be substituted for BaO. The composition of the reaction products can be adjusted by adjusting the ratios of the reagents. All reagents are in powder form and the reaction can be carried out either in inert atmosphere inside a reaction chamber or in air without a chamber. The materials produced have crystalline TiB.sub.2 particles in a glassy matrix (aluminoborate glass). The TiB.sub.2 particles have a size of about 0.5 .mu.m. Advantages include processing simplicity and cost savings. The glass-ceramic composites produced are electrically conductive and find application where high strength, hardness and electrical conductivity are required.