Abstract: A fully alloyed porous metallic coating is applied to the surface of a metallic prosthetic component by producing a slurry comprising a suspension of the alloy in particulate form in a solution of water containing a film-forming binder material, applying to one or more surfaces of the component a coating of the slurry, forming concave and re-entrant depressions by pressing heat degradable spheres into the coating to promote fixation of the component when in use, heating the slurry to dry the same, and sintering the coated component to bond the particulate alloy onto the component, the spheres burning off during the subsequent heating or sintering step.

Abstract: A process for producing flat products from gas atomised particulate material comprises the steps of forming a relatively smooth castable slurry comprising a suspension of such particulate material in a solution of film-forming binder material, depositing a coating of the slurry onto a substrate or support surface and drying the coating to form a flexible flat product. The dried flat product may be bonded onto the substrate or support surface by the drying process or, alternatively, may be removed therefrom and roll-bonded to a suitable substrate for subsequent compaction and sintering.

Abstract: The invention provides a method of producing an abrasive particle, particularly diamond, containing strip. The strip will contain 50 percent or less by volume of the diamond particles and a supporting matrix which will generally be metal. The method involves making a mixture of the abrasive particles and the supporting matrix in particulate form, causing a thin layer of the mixture to be deposited on to a support surface, compacting the layer and heat treating the compacted layer under conditions which will not lead to degradation of the abrasive particles to produce the strip.

Abstract: A process for producing flat products from particulate material comprises the steps of forming relatively smooth, castable slurry comprising a suspension of particulate material in an aqueous solution, a film-forming binder material and a dispersion of a particulate synthetic resin in an aqueous solution, depositing a coating of this slurry onto a support surface and, heating the deposited coating to a temperature at which a component of the synthetic resin volatilises. The coating may be removed from the support surface as a flat product either before or after heating to volatilize a component of the synthetic resin.

Abstract: A method of producing strip comprising at least two material layers of different chemical composition bonded one to another, in which separate slurries of powders of different chemical compositions are formed in film-forming cellulose derivatives. Dried layers in strip form are produced from the slurries and these layers are fed, while under tension in interfacial contact, into the nip of a pair of compaction rolls to effect a mechanical bond between the layers. At least one of the strip layers may be subjected to a sintering operation prior to being fed into the nip of the compaction rolls.

Abstract: A method of producing metallic strip containing discrete particles of one or more additional metallic or non-metallic materials dispersed therein, includes the step of forming a homogeneous mix of ductile metallic particles and a minor proportion of metallic and/or non-metallic particles having chemical and/or physical properties different from those of the ductile metallic particles. A slurry coating comprising a suspension of the mixed particles in a film forming cellulose derivative is deposited onto a moving support surface, dried and removed from the support surface before being subjected to rolling to effect compaction of the ductile content of the strip and sintering at a temperature at which the metallic particles coalesce to form a matrix containing particles of the additional metallic or non-metallic material(s) which either remain as discrete particles or alloy with the matrix.

Abstract: A method for enabling an end of metallic strip produced from powder to be threaded through for example a heating furnace, comprises securing a strip end to a leader by means of an aqueous compound whose water content selected so that it is readily absorbed by the porous strip in order to provide sufficient adhesion to enable the leader to support and guide the strip.