Examples of using Sintering temperature in English and their translations into Korean
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The fine metal powders used- combine with higher sintering temperature.
Changing the sintering temperature and obtain better bonding strength.
Molding process. The fine metal powders used- combine with higher sintering temperature.
The sintering temperature is extremely important and should be monitored closely.
The proper ties of P/M tool s can be controlled by varying compaction pressure and sintering temperature.
As the sintering temperature increases, the density of tungsten copper higher.
Cosolvents, since the introduction of enamel pigment can reduce the sintering temperature and the complementary of color.
Due to the higher sintering temperature, direct sintering is more effective in cleaning than indirect sintering. .
It has small effect for coefficient of thermal expansion, but can improve the viscosity,surface tension and sintering temperature of glaze and glass ceramics.
Specific final composite powder sintering temperature varies with changes in the copper content.
This is because the wetting angle between the tungsten and copper is small, limiting the mobility of liquid copper, the pores can not completely eliminate, thereby to raise the sintering temperature only to increase the density.
The white resin and high sintering temperatures cause even small foreign particles to become visible in finished moldings.
Tungsten Copper Rod Features Tungsten copper rod is a kind of composite material, which is manufactured byhigh-purity tungsten powder and high conductivity copper powder with the production process of isostatic pressing, sintering temperature and copper infiltrated.
But requires a high sintering temperature, sintering time is very long, higher sintering costs;
However, the application of laser in tungsten copper FGM material research has just started,the researchers used a micro-thermocouple embedded successfully measured the sintering temperature of laser sintering of tungsten-copper gradient material distribution.
The effects of sintering temperature, pressure, holding time on the density, hardness and microstructure of the gradient materials were investigated.
Compared with the high-temperature liquid-phase sintering method, which not only reduces the sintering temperature and shortening the sintering time and the sintering density is greatly increased.
Copper sintering tungsten grain size samples with sintering temperature has a tendency to increase, and even more uniform distribution of liquid copper, the greater density; and, as the temperature increases, the tungsten grains gradually grow Large grain polygons ball trend, copper phase also distributed more evenly, the greater density.
Therefore, in order to improve the performance of tungsten copper, tungsten copper sintering method usingactivated liquid phase sintering, compared with the high-temperature liquid-phase sintering method, which not only reduces the sintering temperature and shortening the sintering time and the sintering density is greatly increased.
The ultrafine particles in the process can reduce the sintering temperature of the products, the gradient coating crystal is fine so that the coating performance greatly improved, but the experimental process is more complex.
Wt% a third metal element Pd, Ni, Co or Fe in tungsten-copper and other materials to promote copper insoluble in the tungsten phase was dissolved in the copper phase by forminga Y phase containing these metal elements in the liquid phase during sintering, thereby reducing the sintering temperature, sintering time is shortened, and greatly improve the sintered density.
This method's advantage is that the processing is simple and easily control, while high sintering temperature, long sintering time and low sintering density which make the finished products can not meet the requirements of usage.
Traditional practice is usually higher than the melting point of copper in a high temperature above 300 ℃ densified liquid-phase sintering, characterized by the production process is simple, but there are high sintering temperature, sintering time is long, a large number of volatile copper poor sintering property, low sintered density(only for theoretical density of 90 to 95) and other shortcomings, can not meet the requirements.
Overall, the production of high-temperature liquid phase sintering process is simple, but has a high sintering temperature, sintering time is long, a large number of volatile copper, poor sintering performance, lower sintered density and other shortcomings, so the high-temperature liquid phase sintering method can not prepare high density of tungsten copper composite material, if after assisted sintering process makes the process complicated and costly.
Liquid phase sintering method is characterized by the activation of the production process is simple, but there is a high sintering temperature, sintering time is long, a large number of volatile copper, poor sintering performance, lower sintered density and other shortcomings, can not meet the requirements.
However, experiments based an the feedstock with solid loading of 45 vol.% have been successfully carried out and no defects are found in injection and dehinding stages, and the best sintered temperature is 1400℃ï1⁄4ŒThe relative density of sintered parts reaches 99% and no Cu is extruded to the surface of the parts during sintering. .
The coarse particles of tungsten powder is exactly the opposite, while the coarse particles of the tungsten powder having a good mold ability, and sintering shrinkage is small, size, easy to control, and the sintered density of the sintered temperature sensitivity is small,sintered tungsten embryo porosity of the advantages of easily controlled.
We use high quality pure raw materials, molding,high temperature sintering and infiltration, got an excellent performance of WCu electronic packaging materials and heat sink material.