In recent years, powder metallurgy technique has become the world's fastest growing technology. Ni-Sn alloy has been a lot of modern industrial production, the Ni-Sn coating due to the appearance of a black coating and often gwynlliog color or black and white pearl coating. The nickel-tin alloy powder of the sintering characteristics of penetration of dust, by changing the sintering temperature and residence time. It forms nickel-tin intermetallic compounds at a suitable temperature and pressure. The material is sintered to provide process parameters for the production of powder metallurgy products.

Finished nickel powder, tin powder, the powder grain size is 47 ~ 61 PTRN chemical purity analytical grade. Process sample nickel powder, tin powder is the product ratio of 1:1, dried and weighed from 47 to 61 in relation to the particle size metal powder, the mixture was hand-grinding mill for 30 minutes, thorough mixing, 30 b, so that hydraulic universal testing machine, the pre-pressure (100 KN,) are barrel-shaped -type holding furnace 100° for 0.5 h and hot-pressing (300 KN,) consisting in the preparation of the green body can act as a good model to suppress the table below sintering temperature and residence time in the furnace SX2l0.12 Box-type resistance to sintering.
When the occupant in the same time, so that the temperature of the sintering, has a micro hardness arose. Sintering temperature under the same conditions, with a hold time, the micro hardness shows a small increase in the trend. The same sintering temperature, holding time, Atomic diffusion, to rent the reaction takes place completely in contact with particles, a lower porosity, a combination of a relatively dense, had a density tends to increase, causing growth of micro-hardness. When the sintering temperature increased, atomic movement is increased, the diffusion coefficient increases rapidly increased significantly the rate of diffusion and diffusion of which contribute to the difference between the other holes in each particle and the matrix of holes gradually decreases, as it is thick, micro hardness was a significant increase.

Nickel powder and silicon powder is mixed with repression, sintered 100-100 ° for 15 h. The process conditions are mainly in SN2, Ni, Sn, Ni, and SN4 NiSn, intermetallic compounds. With 15 h, the micro-hardness of nickel-tin intermetallic compounds, the sintering temperature tends to increase the size of variations in the density and hardness of the microwave. The sintering temperature as well head, hardness and density of the nickel-tin intermetallic compounds tested on the rise. For example, by sintering a nickel-tin diffusion often is not a new phase of the sintered samples of a nickel-, tin-, can have an irregular shape for the duck egg cell, which is filled with proliferation response, the new phase of nickel-tin intermetallic compounds. When the sintering temperature increased within certain limits, to the right of the text, and the grains gradually. But heat is not much better than a comparison here.

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