Ceramic and preparation method thereof as well as ceramic composite material and preparation method thereof
A technology for ceramics and ceramic substrates, applied in the field of ceramic metallization, can solve the problems of difficult laser activation, poor bonding force of chemical plating, etc., and achieve the effect of improving light absorption and firm bonding
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 The invention provides a method for preparing ceramics, which comprises mixing a ceramic matrix with elemental carbon to form a mixture, forming, debinding, and sintering; based on the total weight of the mixture, the content of the elemental carbon is 0.001-1wt% .
 The ceramic material provided by the present invention contains carbon elements, which can improve the light absorption of general ceramic materials to low-power laser energy beams, so that they can be directly activated by patterned etching with low-power lasers, and then put into the chemical plating solution. plated, and the plated metal is firmly combined with the ceramic material.
 Preferably, the content of the elemental carbon is 0.4-0.6wt%. Carbon content in this range has a better coloring effect, and the electrical properties of ceramics after sintering will not be affected by too much carbon content.
 Preferably, based on the total weight of the mixture, the content of th...
 (1) Preparation of ceramics
 Ceramic powder: high-purity Al with particle size less than 3 μm 2 o 3 Powder 9.45 grams, sintering aid 0.5 grams (MgO\SiO 2 \ \CaO-based glass powder); elemental carbon: 0.05 g of graphite is fully mixed evenly, then 1 g of PVA solution with a concentration of 6wt% is added, ground and granulated; then the granulated powder is pressed into a blank with a diameter of 15 mm by a manual molding machine body, the pressure is 10MPa, the green body will be put into a closed box furnace, debinding in flowing nitrogen, the heating rate is 5℃ / min, the debinding temperature is 600℃ (keep 2h), after cooling, put The sintering was carried out in an atmosphere box furnace (under a nitrogen atmosphere), the heating rate was 5°C / min, and the sintering temperature was 1600°C (holding time 2h). Ceramics are obtained by cooling in the furnace.
 (2) Preparation of ceramic composite materials
 The ceramics are placed on a YAG laser...
 Sample A2 was prepared according to the method of Example 1. The difference is: the ceramic powder is ZrO 2 9.4 grams, 0.5 grams of sintering aid (Y 2 o 3 ); elemental carbon: carbon black powder 0.1 g.
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