A kind of black alumina ceramic toner and its preparation method and application
A technology of black alumina and alumina powder, applied in fibrous fillers and other directions, can solve the problems of inconsistency in the color table of black alumina ceramic products, decrease in physical properties such as flexural strength, and unfavorable application fields, and achieve color development. Good performance, improved physical properties, and reduced production costs
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Embodiment 1
[0023] 1. In this embodiment, a colorant for black alumina ceramics is composed of raw materials: 30.0wt% iron oxide, 24.0wt% cobalt oxide, 20.0wt% manganese oxide, 8.0wt% magnesium oxide, and 18.0wt% titanium oxide .
[0024] 2, the preparation method of the above-mentioned black aluminum oxide ceramic coloring agent of the present embodiment, its steps are as follows:
[0025] (1) According to the above ratio, add the components of the raw materials together into hydrochloric acid with a concentration of 3mol / L until the raw materials are completely dissolved, then add ammonia water with a concentration of 3mol / L as a precipitating agent, and control the pH of the system to 9.0. The ions are converted into precipitates, filtered, washed with deionized water, dried, and crushed to obtain the colorant precursor;
[0026] (2) Calcining the above toner precursor at 950°C for 12 hours to obtain black alumina ceramics
[0027] Use a colorant with a grain size of 50nm and a weigh...
Embodiment 2
[0031] 1. In this embodiment, a toner for black alumina ceramics is composed of raw materials: 34.0 wt% iron oxide, 28.0 wt% cobalt oxide, 24.0 wt% manganese oxide, 4.0 wt% magnesium oxide, and 10.0 wt% titanium oxide.
[0032] 2, the preparation method of the above-mentioned black aluminum oxide ceramic coloring agent of the present embodiment, its steps are as follows:
[0033] (1) According to the above ratio, add the components of the raw materials together into hydrochloric acid with a concentration of 4mol / L until the raw materials are completely dissolved, then add ammonia water with a concentration of 4mol / L as a precipitant, and control the pH of the system to 9.4. The ions are converted into precipitates, filtered, washed with deionized water, dried, and crushed to obtain the colorant precursor;
[0034] (2) Calcining the above toner precursor at 1000°C for 10 hours to obtain a toner for black alumina ceramics, the grain size of which is 60nm, and the weight loss at ...
Embodiment 3
[0038] 1. In this embodiment, a colorant for black alumina ceramics is composed of raw materials: 32.0wt% iron oxide, 26.0wt% cobalt oxide, 22.0wt% manganese oxide, 6.0wt% magnesium oxide, and 14.0wt% titanium oxide .
[0039] 2, the preparation method of the above-mentioned black aluminum oxide ceramic coloring agent of the present embodiment, its steps are as follows:
[0040] (1) According to the above-mentioned proportions, each composition of the raw materials is added into hydrochloric acid with a concentration of 4mol / L until the raw materials are completely dissolved, and then sodium hydroxide with a concentration of 4mol / L is added as a precipitating agent, and the pH value of the control system is 9.1, Convert metal ions into precipitates, filter, wash with deionized water, dry, and crush to obtain colorant precursors;
[0041] (2) Calcining the above toner precursor at 1050°C for 9 hours to obtain a toner for black alumina ceramics, the grain size of which is 70nm,...
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Abstract
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