Abstract:
The invention proposes a germanium-containing nickel-based solder having a similar composition to a nickel-based superalloy, as a result of which the proportion of γ' formers in the solder can be reduced.
Abstract:
The invention concerns a process which consists in applying on a part to be protected a composition containing a mixture of boron powder consisting mainly of TiB2, of powder of at least one vitreous refractory oxide consisting mainly of a borosilicate mixture, and a binder containing a ceramic precursor resin. The resin is crosslinked and then transformed into ceramic by heat treatment or during first exposure of the part when it is used at high temperatures.
Abstract:
A compressor is provided with cylinder blocks (30, 31) having cylinder bores (41, 42). A driving shaft (39) is supported rotatably on the cylinder blocks (30, 31). A swash plate (40) is fixed to the driving shaft (39) so that the swash plate can be rotated unitarily with the shaft. A piston (1) is held slidably in the cylinder bores (41, 42). Shoes (44) are provided slidably between the piston (1) and swash plate (40). The rotation of the swash plate (40) causes the shoes to reciprocate the piston. The piston (1) comprises aluminum or an aluminum alloy as a base material. The piston (1) is provided with recesses (2) for retaining the shoes (44) slidably. The retaining recesses (2) are provided with a covering layer (6) formed out of tin as a main component.
Abstract:
The compressor has cylinder blocks (30, 31) containing cylinder bores (41, 42). A drive shaft (39) is rotatably supported in the cylinder blocks (30, 31). A swash plate (40) is attached to the drive shaft (39) to be rotatable integrally therewith. A piston (1) is slidably housed in the cylinder bores (41, 42). A shoe (44) is slidably interposed between the piston (1) and the swash plate (40). As the swash plate (40) rotates, the piston (1) is reciprocated via the shoe (44). The piston (1) is made of an aluminum or aluminum alloy matrix. The piston (1) contains a receiving recess (2) for slidably receiving the shoe (44) therein. A coating layer (6) containing tin as a major component is formed at the receiving recess (2) of the piston (1).
Abstract:
A single-side compression type swash-plate compressor wherein, in order to improve the sliding contact performance on the compression side of the iron or aluminum material used therein, at least that plane of a swash plate (14) which is in sliding contact with a shoe (15b) on the compression space side is coated with a sprayed coating layer comprising a copper alloy containing 0.5-50 % of at least one member selected from the group consisting of at most 40 % lead, at most 30 % tin, at most 0.5 % phosphorus, at most 15 % aluminum, at most 10 % silver, at most 5 % silicon, at most 5 % manganese, at most 5 % chromium, at most 20 % nickel and at most 30 % zinc, and the balance consisting substantially by copper and impurities, while at least that plane of the swash plate (14) which is in sliding contact with a shoe (15a) on the side opposite to the compression space is subjected to electrolytic plating, nonelectrolytic plating, lubricant coating, phosphate coating, or hardening.
Abstract:
La présente invention concerne un procédé de fabrication par frittage flash d'une pièce (PF) en alliage métallique, comportant l'application simultanée, à l'intérieur d'une matrice (M), d'une pression uniaxiale et d'un courant électrique à un matériau constitutif pulvérulent répondant à la composition suivante : - 42 à 49 % d'aluminium, - 0,05 à 1,5 % de bore, - 0,2% minimum d'au moins un élément choisi parmi le tungstène, le rhénium et le zirconium, - éventuellement 0 à 5 % d'un ou plusieurs éléments choisis parmi le chrome, le niobium, le molybdène, le silicium et le carbone, - du titane faisant la balance et la totalité des éléments hors aluminium et titane étant comprise entre 0,25 et 12 %.
Abstract:
Es wird ein germaniumhaltiges nickelbasiertes Lot vorgeschlagen, das eine ähnliche Zusammensetzung wie eine nickelbasierte Superlegierung aufweist, wodurch der Anteil an γ' -Bildnern um Lot reduziert werden kann.
Abstract:
On applique sur une pièce à protéger une composition contenant un mélange de poudre de borure constituée majoritairement de TiB2, de poudre d'au moins un oxyde réfractaire vitreux constituée majoritairement d'un mélange borosilicaté, et d'un liant contenant une résine précurseur de céramique. La résine est réticulée et est ensuite transformée en céramique par traitement thermique ou lors d'une première exposition de la pièce en service à des températures élevées.
Abstract:
A compressor is provided with cylinder blocks (30, 31) having cylinder bores (41, 42). A driving shaft (39) is supported rotatably on the cylinder blocks (30, 31). A swash plate (40) is fixed to the driving shaft (39) so that the swash plate can be rotated unitarily with the shaft. A piston (1) is held slidably in the cylinder bores (41, 42). Shoes (44) are provided slidably between the piston (1) and swash plate (40). The rotation of the swash plate (40) causes the shoes to reciprocate the piston. The piston (1) comprises aluminum or an aluminum alloy as a base material. The piston (1) is provided with recesses (2) for retaining the shoes (44) slidably. The retaining recesses (2) are provided with a covering layer (6) formed out of tin as a main component.
Abstract:
본 발명은 주로, TiB 2 로 이루어진 붕소 분말, 주로 붕규산염 혼합물로 이루어진 하나 이상의 유리질의 내열성 산화물의 분말, 및 세라믹 전구체 수지를 함유하는 결합재의 혼합물을 함유하는 조성물 보호되어야 하는 부품에 적용되는 것으로 이루어진 공정에 관한 것이다. 상기 수지는 교차연결된 다음 그것이 높은 온도에서 사용되는 경우에 부품의 처음 노출 중에 또는 열처리에 의해 세라믹으로 변환된다.