MnO-SiO2-Al2O3 series activator metalization layer and preparation process thereof
A metallized layer and preparation process technology, applied in the field of MnO-SiO2-Al2O3-based activator metallized layer and its preparation, can solve the problem that the Mo-Mn method is difficult to adapt and the like
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Embodiment 1
[0076] Embodiment 1: the design of metallization formula
[0077] This embodiment adopts MnO-SiO 2 -Al 2 o 3 Ternary system activation formula, and the influence of the ratio of the three on the metallization layer is analyzed.
[0078] 1. Design of oxide expansion coefficient
[0079] Whether the glass phase, ceramics, and Mo skeleton can get a good thermodynamic coordination also has a crucial impact on the quality of the seal. Good cooperation can effectively reduce the stress value of the sealing interface, thereby improving the sealing strength and increasing the reliability of the sealing. Therefore, when designing the metallization formula, the thermal expansion factor of the glass phase is also one of the important indicators. Due to the large difference in the expansion factors of various glass phases, when designing the metallization formula, coordination of the ratio of various components should be considered, so that the combined glass phase formula has a ther...
Embodiment 2
[0114] Example 2: 95% Al 2 o 3 Preparation and sealing of ceramic metallization layer
[0115] (1) Ceramic surface pretreatment
[0116] Scrub the ceramic surface with detergent to remove surface oil. Then rinse with tap water and alcohol to remove residues and dry.
[0117] (2) Preparation of metallization paste
[0118] Take an appropriate amount of Mo powder in a ball mill jar, add absolute ethanol to it, and use a planetary ball mill to mill for 12 hours. Take out the ball mill jar, let it stand for three minutes, pour out the suspension in the upper layer, and let it stand still for several hours to clarify. Take out the precipitate and put it into a drying oven to dry it at 40°C. The powder used for preparing the metallization layer is weighed according to a certain mass ratio and mixed evenly. See Table 3 for the specific proportions of the mixed powders used in the preparation of the metallization slurry.
[0119] Table 3 metallization paste powder ratio
[01...
Embodiment 3
[0133] Embodiment 3: metallized layer surface phase analysis
[0134] In this experiment, Shimadzu (SHIMADZU) XRD-6100 X-ray diffractometer was used to analyze the phase of the sample. The test conditions are as follows. The scanning range is 10°~90°, the tube voltage is 40kV, the tube current is 40mA, the scanning speed is 4° / min, and the counter interval is 0.02°.
[0135] figure 2 The activator component is 50% MnO+35% SiO 2 +15%Al 2 o 3 , the ratio of Mo powder content to activator is 3:1, the sintering temperature is 1400 ℃, and the X-ray diffraction pattern of the metallized layer is prepared under the condition of holding for one hour. Comparing the original spectral line with the possible triple-intensity lines of the phase, the stronger peaks in the XRD pattern were preliminarily calibrated. It can be seen from the figure that the main phases on the surface of the metallization layer are Mo, MoO 2 and Al 2 o 3 , MnO, SiO 2 , CaO and MoO 3 Compound composit...
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