High-temperature-resistant anti-oxidation paint for ZrN-SiAlON-based stainless steel
An anti-oxidation coating, stainless steel technology, applied in the direction of fireproof coatings, coatings, etc., can solve the problems of poor chemical stability, easy cracking and falling off, etc., achieve low thermal expansion rate, not easy to crack and fall off, improve high temperature resistance and chemical stability Effect
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Embodiment 1
[0032] A ZrN-SiAlON-based high-temperature and anti-oxidation coating for stainless steel, consisting of the following raw materials in parts by weight: 30 parts of ZrN-SiAlON powder, 3 parts of manganese dioxide, 20 parts of composite binder, 0.5 parts of potassium fluoroborate, carbonized 0.5 parts of boron, and the particle size of each of the above components is 300-500 mesh.
[0033] Among them, the ZrN-SiAlON powder is prepared by the following method:
[0034] (1) The weight parts are respectively 4 parts of alumina powder, 10 parts of zircon, and 30 parts of carbon black. The mass ratio to water is 1.5:1;
[0035] (2) Dry mix the mixture after step (1) freeze-drying for another 20 minutes;
[0036] (3) The dry-blended mixture was pressed into shape at a pressure of 70 MPa, and then placed in a microwave high-temperature atmosphere furnace, and kept at 1400 ° C for 5 hours. During the heat preservation process, flowing nitrogen gas was introduced at a flow rate of 0.5...
Embodiment 2
[0046] A ZrN-SiAlON-based high-temperature and anti-oxidation coating for stainless steel, consisting of the following raw materials in parts by weight: 40 parts of ZrN-SiAlON powder, 4 parts of manganese dioxide, 25 parts of composite binder, 1 part of potassium fluoroborate, carbonized 1 part of boron, the particle size of each of the above components is 300-500 mesh.
[0047] Among them, the ZrN-SiAlON powder is prepared by the following method:
[0048] (1) The weight parts are respectively 7 parts of alumina powder, 12 parts of zircon, and 35 parts of carbon black. The mass ratio to water is 1.7:1;
[0049] (2) Dry mix the mixture after step (1) freeze-drying for another 25 minutes;
[0050] (3) The dry-blended mixture was pressed into shape at a pressure of 75MPa, and then placed in a microwave high-temperature atmosphere furnace, and kept at 1500°C for 7 hours, and flowing nitrogen was introduced during the heat preservation process, with a flow rate of 1L / min;
[00...
Embodiment 3
[0060] A ZrN-SiAlON-based high-temperature and anti-oxidation coating for stainless steel, consisting of the following raw materials in parts by weight: 50 parts of ZrN-SiAlON powder, 5 parts of manganese dioxide, 30 parts of composite binder, 1.5 parts of potassium fluoroborate, carbonized 1.5 parts of boron, the particle size of the above components is 300-500 mesh.
[0061] Among them, the ZrN-SiAlON powder is prepared by the following method:
[0062] (1) The weight parts are respectively 8 parts of alumina powder, 15 parts of zircon, and 45 parts of carbon black. The mass ratio with water is 2:1;
[0063] (2) Dry mix the mixture after step (1) freeze-drying for another 30 minutes;
[0064] (3) The dry-blended mixture was pressed into shape at a pressure of 80 MPa, then placed in a microwave high-temperature atmosphere furnace, and kept at 1600°C for 8 hours, and flowing nitrogen gas was introduced during the heat preservation process, with a flow rate of 2L / min;
[006...
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