Abstract: A method of impregnating the surface of a metal substrate with wear resist particles to impart wear resisting characteristics to the surface. The substrate surface is subjected to a relatively moving high-powered laser beam to cause localized surface melting in passes thereacross, and hard wear resistant particles are forcibly velocity injected into the melt. The particles are captured upon solidification of the melt pool and retained therein by metallurgical bond. A wear resistant layer is formed which is an integral part of the underlying material.

Abstract: An adjustable linear integrating mirror for producing spatially uniform b areas of high power lasers. The mirror is formed by a plurality of thin solid rectangular blocks made of a highly reflective metal with one thin face ground to a flat mirror finish. The blocks are assembled one upon the other with their mirror faces in alignment and held together at their ends by strips of spring steel. Wedge-shaped spacers are inserted between their free ends opposite the mirrored face to produce small angular rotations of each mirrored block. The spring steel should have sufficient tension to secure the wedges in place; however, if necessary, clamps may be used to hold the back ends together to secure the wedges in place. The angular setting of the mirrored blocks will determine the amount of overlay of the reflected laser beam. Fine tuning for a specific overlay may be performed by varying the depth of the wedges which varies the angular setting of each mirrored block section.

Abstract: An improved method is disclosed of bonding an electrically conductive matal to an electrically conductive layer which is adhered to and which overlies a curved non-metallic substrate. This method comprises providing a non-metallic substrate with a curved surface. This substrate has adhered to its surface an electrically conductive layer. An electrically conductive material which is to be bonded to the electrically conductive layer is placed on the electrically conductive layer. A rigid, substantially inert and transparent to laser beam energy, cover means is placed on the electrically conductive material sufficiently to hold the electrically conductive material against the electrically conductive layer. A high energy density pulsed laser beam is directed on the materials at a sufficiently high energy density thereby welding the materials together.