Abstract: Al.sub.100-a-b-c X.sub.a M.sub.b T.sub.c, in which X is Y (yttrium) and/or rare-earth element(s), M is Fe, Co, and/or Ni, and T is Mn, Mo, Cr, Zr and/or V, and, a=0.5-5 atomic %, b=5-15 atomic %, and c=0.2-3.0 atomic %, and, further, X and M fall on and within the hatched region range of the appended FIG. 1, has a complex, amorphous-crystalline structure with an amorphous matrix containing the Al, X, M and T, and minority crystalline phase consisting of aluminum-alloy particles containing super-saturated X, M and T as solutes. The alloy has a high strength due to the dispersed crystalline particles.

Abstract: A piston ring is made of a titanium alloy, at least an outer peripheral surface and upper and lower surfaces thereof are formed with a nitrogen diffused layer, and at least an outer peripheral sliding surface thereof is coated with a hard film by physical vapor deposition on the nitrogen diffused layer.

Abstract: In a three-piece combined oil ring comprising a pair of side rails and provided between them a spacer expander, the side rails are each provided in the inner edge thereof with a plurality of cutouts at given intervals, thereby providing a combined oil ring improved in its conformable property to any deformation of a cylinder bore. A nitrided layer is formed by plasma nitriding on each side rail only at its outer edge face, thereby preventing embrittlement of the side rails and improving the durability.

Abstract: An aluminum-based alloy foil or thin aluminum-based alloy wire is produced from an amorphous material made by a quenching and solidifying process and having a composition represented by the general formula:Al.sub.a M.sub.b X.sub.cwherein M is one or more elements selected from a group consisting of V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Ti, Mo, W, Ca, Li, Mg and Si; X is one or more elements selected from a group consisting of Y, Nb, Hf, Ta, La, Ce, Sm, Nd and Mm (misch metal); and a, b, and c are atomic percentages falling within the following range:50.ltoreq.a.ltoreq.950.5.ltoreq.b.ltoreq.35 and0.5.ltoreq.c.ltoreq.25Such foil or wire has a smooth surface and a very small and uniform foil thickness or wire diameter, contains at least 50% by volume of an amorphous phase, and has excellent strength and resistance to corrosion. The foil thickness and wire diameter are reduced in a rolling or drawing process at an elevated temperature over a short time period.

Abstract: A combined oil ring is comprised of a steel oil ring having a generally I-shaped section consisting of upper and lower rails and a web connecting the both rails and a coil expander for forcing the oil ring outwardly. Each of the outer circumferential sliding surfaces of the circumferential outer projecting portions in the upper and lower rails forms a nitrided surface with a hardness of Hv 900 or more, at least one of the upper and lower surfaces in the circumferential outer projecting portion forms a surface with a hardness of lower than Hv 700, and a width of the outer circumferential sliding surface is smaller than 0.25 mm. The other surface of the upper and lower surfaces forms a nitrided surface with a hardness of Hv 900 or more or a surface with a hardness of lower than Hv 700.

Abstract: A compression ring provided with both ends having notches is formed on outer peripheral surface with a plasma nitrided layer and is formed on upper and lower surfaces and an inner peripheral surface with soft surface treatment layers. The upper and lower surfaces and the inner peripheral surface may be of base material surfaces.

Abstract: A solidified amorphous alloy material is produced from a melt of its desired metal material. A melt feeding route is provided with a first-stage quenching zone. The melt is quenched to a predetermined temperature in the first-stage quenching zone. The thus-quenched melt is then introduced into a second-stage quenching and solidification zone, whereby the melt is cooled further and solidified into a solidified material having an amorphous phase.

Abstract: Each of a plurality of cylinder liners has a cooling liquid groove at its outer circumferential surface and has a flat surface over an entire axial length at a part of the outer circumferential surface. The cylinder liners are inserted in bores of a cylinder block with flat surfaces of adjacent liners abutting each other and the grooves at the flat surfaces being coincident with each other.

Abstract: A cylinder liner comprises an outer circumferential surface provided with a plurality of groups of annular grooves, a longitudinal groove communicating the annular grooves with each other and forming an outlet for a cooling liquid in each of the groups of annular grooves, and a longitudinal groove communicating the annular grooves with each other and forming an inlet for the cooling liquid in each of the groups of annular grooves. The outlet communicates in series with the inlet in the adjoining groups of annular grooves. Sectional areas of the annular grooves in the same group of annular grooves are decreased from an upstream side toward a downstream side.

Abstract: An aluminum alloy powder for coating materials and a coating material containing the aluminum alloy powder. The aluminum alloy powder comprises an amorphous aluminum alloy consisting essentially of from 83 to 91% of Al, from 0.5 to 5% of Ca and from 8 to 12% of Ni, all in atom %, and comprising a leaf-shaped particle having a thickness of 0.3 to 3 .mu.m, a minor axis of from 10 to 150 .mu.m, a ratio of the minor axis to a major axis of from 1 to 3, and an aspect ratio which is the ratio of the minor axis to the thickness of from 3 to 100, wherein the aluminum alloy powder is contained in an amount of from 5 to 25 parts by weight based on 100 parts by weight of the total weight of (i) the coating material resin component and (ii) aluminum alloy powder, and the coating material resin component is selected from the group consisting of a water-based synthetic latex and a water-soluble resin. The aluminum alloy powder has a superior dispersibility in a resin in a coating material.

Abstract: A cylinder liner is fitted in a cylinder bore of a cylinder block of a multiple-cylinder engine. The cylinder liner has an outer circumferential surface having a plurality of annular grooves and a plurality of longitudinal grooves connected thereto, in which a cooling liquid is flowed in the grooves. A part in an axial direction of a crankshaft of a bottom of at least one of the annular grooves is coated with a sprayed coating of metal, and a sectional area of the annular groove provided with the sprayed coating varies in a circumferential direction.

Abstract: A cylinder liner having an outer circumferential surface having a plurality of groups of annular grooves, wherein each of the groups of annular grooves has two longitudinal grooves communicating the individual annular grooves with each other, forming an outlet and an inlet for the cooling oil and disposed at locations spaced apart by 180.degree. in a circumferential direction, and the outlet communicates with the inlet in series in the adjoining groups of annular grooves. The outer circumferential surface has further a longitudinal groove connected to the lower end of the longitudinal groove forming the outlet of the lowermost group of annular grooves, a circumferential groove connected to the lower end of the longitudinal groove, and a longitudinal groove having the upper end connected to the circumferential groove and the lower end released, and the lowermost longitudinal groove is disposed at a circumferential position differing from the longitudinal grooves in the groups of annular grooves.

Abstract: A piston ring comprises a martensitic stainless steel ring having a nitrided layer formed in the surface portion thereof, and a titanium nitride film coated on the outer sliding surface of the ring by an ion-plating process. According to a first embodiment of the present invention, the titanium nitride film has a nitrogen concentration which is gradually increased toward the top surface thereof to gradually lower a toughness of the film toward the top surface and to make a surface portion of the film more brittle than the other portion of the film. On the other hand, according to a second embodiment of the present invention, the titanium nitride film has a nitrogen concentration which is gradually decreased toward the top surface and to make a surface hardness of the film HV 1800 or less.

Abstract: A cylinder liner comprises an alloy plating film of Ni-B or Ni-P or Ni-Co-P formed on at least a part contacting with cooling liquid in an outer peripheral surface and further a nitrided layer formed on an inner peripheral surface to improve an anti-cavitation characteristic, a sliding characteristic and an anti-corrosion characteristic and facilitate a manufacturing of the cylinder liner.

Abstract: The present invention provides an amorphous alloy having superior mechanical strength, corrosion resistance for formability, at a relatively low cost. The amorphous alloy is a composition represented by the general formula: Al.sub.100-x-y M.sub.x Ln.sub.y wherein M is at least one element selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Nb, Mo, Hf, Ta and W; Ln is at least one element selected from the group consisting of Y, La, Ce, Nd, Sm, Gd, Tb, Dy, Ho and Yb or misch metal (Mm) which is a combination of rare earth elements; and x and y are, in atomic percentages: 0<x.ltoreq.55 and 30.ltoreq.y.ltoreq.90, preferably 0<x.ltoreq.40 and 35.ltoreq.y.ltoreq.80, and more preferably 5<x.ltoreq.40 and 35.ltoreq.y.ltoreq.70, with the proviso that 100-x-y.gtoreq.5 the alloy having at least 50% (by volume) of an amorphous phase.

Abstract: A printing head which comprises an insulating substrate and a plurality of printing electrodes for a resistive ribbon type printing apparatus, in which a ribbon composed of a layer of thermal transferable ink and an electrical resistive layer is supplied with an electric current through selected printing electrodes so that the current passes through a portion of the resistive layer to generate Joule heat and melt a portion of the ink layer, and the molten ink is transferred to a paper. The ceramic substrate is provided with a plurality of U-shaped grooves, and each of the printing electrodes is formed in each of the grooves and has a thickness smaller than the depth of the grooves.

Abstract: Disclosed is an amorphous alloy having superior processability which has a composition represented by the general formula:X.sub.a M.sub.b Al.sub.cwhereinX is at least one element of Zr and Hf;M is at least one element selected from the group consisting of Ni, Cu, Fe, Co and Mn; anda, b and c are, in atomic percentages:25.ltoreq.a.ltoreq.85, 5.ltoreq.b.ltoreq.70 and 0<c.ltoreq.35, preferably 35.ltoreq.a.ltoreq.75, 15.ltoreq.b.ltoreq.55 and 5.ltoreq.c .ltoreq.20 and more preferably 55.ltoreq.a.ltoreq.70, 15.ltoreq.b .ltoreq.35 and 5.ltoreq.c.ltoreq.20,the alloy being at least 50% (by volume) composed of an amorphous phase. Since the amorphous alloy is at least 50% by volume amorphous and can be present in a supercooled liquid state in a wide temperature range, it has a greatly superior processability together with high levels of strength, thermal resistance and corrosion resistance characteristic of amorphous alloys.

Abstract: The present invention provides an additive powder for coating materials or plastics, comprising a particle of a metal or glass, comprised of a particle having a thickness of 0.5 to 5 .mu.m, a minor axis/major axis of from 5 to 500 .mu.m, an aspect ratio (ratio of the major axis to the thickness) of not less than 5, and a ratio of the minor axis to the major axis, of from 1 to 10, and having the shape of a leaf as a whole. This powder can be prepared by melting a metal or glass, bringing the resulting melt to flow out from a nozzle and jetting a gas to the melt to form droplets of the melt, and bringing said droplets, before they solidify, to collied against the surface of a rotating cooling member having the shape of an cone or horn and provided in the directio of the flow of said droplets, followed by cooling to effect solidification.

Abstract: A printing head which comprises an insulating substrate and a plurality of printing electrodes for a resistive ribbon type printing apparatus, in which a ribbon composed of a layer of thermal transferable ink and an electrical resistive layer is supplied with an electric current through selected printing electrodes so that the current passes through a portion of the resistive layer to generate Jule heat and melt a portion of the ink layer, and the molten ink is transferred to a paper. The printing electrodes are made of a plating material and the substrate is made of a machinable ceramic having a hardness equal to or lower than the hardness of the printing electrodes.

Abstract: The present invention provides an additive powder for coating materials or plastics, comprising a particle of a metal or glass, comprised of a particle having a thickness of 0.5 to 5 .mu.m, a minor axis/major axis of from 5 to 500 .mu.m, an aspect ratio (ratio of the major axis to the thickness) of not less than 5, and a ratio of the minor axis to the major axis, of from 1 to 10, and having the shape of a leaf as a whole. This powder can be prepared by melting a metal or glass, bringing the resulting melt to flow out from a nozzle and jetting a gas to the melt to form droplets of the melt, and bringing said droplets, before they solidify, to collide against the surface of a rotating cooling member having the shape of an cone or horn and provided in the direction of the flow of said droplets, followed by cooling to effect solidification.