摘要:
An object of this invention is to provide an implantable ceramic joint head which can be readily marked without a reduction in the strength of the ceramic. In the artificial ceramic joint head of the present invention having a recess into which a stem is inserted, an insert with a marking is provided in the bottom of the recess.
摘要:
A semiconductor device having oppositely facing first and second sides. The semiconductor device has a support exposed at the first side of the semiconductor device, a semiconductor device mounted on the support, and a plurality of leads connected to the semiconductor device. A lead identifier on the support is visible at the first side of the semiconductor device, and assists identification of a specific lead in the plurality of leads.
摘要:
A lead frame for a semiconductor device. The lead frame has a layer defining a first unit lead frame including a first support for a semiconductor chip and a plurality of leads spaced around the first support. The first support has a peripheral edge. The layer further defines a guide rail extending along at least a portion of the peripheral edge and connected to at least one of the leads. At least one notch is formed in the layer between the at least one lead and a part of the guide rail so as to define a first tie bar.
摘要:
A lead frame for a semiconductor device. The semiconductor device has a sheet with oppositely facing sides and a thickness between the oppositely facing sides. The sheet has first and second unit lead frames. Each unit lead frame has a support for a semiconductor chip and at least one lead space from the support. The sheet has a tie bar network which connects a) the support to the at least one lead on each of the first and second lead frames and b) the first and second lead frames, each to the other. The sheet has a dividing line along which the sheet can be cut to separate the first and second lead frames from each other. The tie bar network consists of at least one tie bar extending along a substantial length of the dividing line. The support has a first thickness between the oppositely facing sides of the sheet. The at least one tie bar has a second thickness between the oppositely facing sides of the sheet over a substantial length of the dividing line that is less than the first thickness.
摘要:
A process for producing a biocompatible implant material which can be suitably shaped into a variety of forms. A binder is added to a mixture of hydroxylapatite powder and calcium phosphate glass frit (5 wt. %), to thereby prepare a slurry, and the resultant slurry is granulated, to prepare spherical raw material granules. Separately, spherical polyisobutyl methacrylate particles are prepared, and the particles are dry-mixed with the above-prepared granules, to thereby obtain a powder mixture. The powder mixture is compacted using a mold press, to thereby form a cuboid sample. The resultant compact is heated in a drier at 170° C. for three hours, to thereby melt spherical polyisobutyl methacrylate particles. Thereafter, the compact is allowed to cool, to thereby bind the raw material granules together via the polyisobutyl methacrylate that solidifies after melting. After the compact is allowed to cool, the compact is subjected to shaping by use of a copy machining machine and also to drilling. Thereafter, the compact is heated at a rate of 300° C. hour, and fired at 1,250° C. for three hours, to thereby produce a biocompatible implant material.
摘要:
Disclosed is a method of joining metallic members together. The metallic members are coated with an undercoat composed of an alloy of tin and zinc and contacted with each other through a mixture containing a solder comprising tin and zinc and a flux, while heating the metallic members to melt the solder. Then the molten solder is solidified to join the metallic members. Here, the ratio of zinc in the undercoat is represented by x (% by weight), the ratio of zinc in the solder is represented by y (% by weight), and the ratio, x, and the ratio, y, are values within an area enclosed by the line A or B in FIG. 1, which satisfies the formulas: 1≦x≦20, 3≦y≦13 and 3≦(x+y)/2≦13, or formulas: 0.1≦x≦25, 2≦y≦15 and 2≦(x+y)/2≦15.
摘要翻译:公开了将金属构件连接在一起的方法。 金属构件涂覆有由锡和锌的合金构成的底涂层,并通过包含锡和锌的焊料和助熔剂的混合物彼此接触,同时加热金属构件以熔化焊料。 然后将熔融的焊料固化,以将金属构件接合。 这里,底涂层中的锌的比例由x(重量%)表示,焊料中的锌的比例由y(重量%)表示,x的比例和y的比例为y 在由图1中的线A或B包围的区域内。 1,其满足以下公式:1 <= x <= 20,3 <= y <= 13和3 <=(x + y)/ 2 <= 13或式:0.1 <= x <= 25,2 = y <= 15和2 <=(x + y)/ 2 <= 15。