Cordierite-based glass ceramic combined silicon carbide ceramic material and preparation method thereof
A technology of silicon carbide ceramics and glass-ceramics, applied in the field of ceramic materials, can solve the problems of reducing liquid phase, unfavorable liquid phase sintering, and no silicon carbide, and can reduce the sintering temperature, which is beneficial to popularization and application and industrial technology, and improves the The effect of chemical compatibility
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[0022] Example 1:
[0023] 1, the present embodiment of a cordierite based crystallized glass bonded silicon carbide ceramic material, comprising a base material and a binding agent, composed of cordierite base material is a microcrystalline glass powder (particle size 75μm) 30wt%, silicon carbide oxidation pretreatment aggregate 70wt% (aggregate of silicon carbide oxidation treatment at a temperature of 1000 ℃ 2h prepared, wherein the particle size of 30 mesh 30wt%, particle size 80 mesh 10wt%, a particle size of 120 10wt%, particle size of 325 mesh 20wt%). Wherein the glass powder composition of cordierite crystallites group of MgO 17wt%, Al 2 O 3 22 wt%, SiO 2 60 wt%, Li 2 O 1wt%. Binding agent concentration of 5wt% PVA solution in an amount of 8wt% binder.
[0024] 2, for example, cordierite glass-ceramics of silicon carbide ceramic material prepared with the present embodiment, the following steps:
[0025] (1) After the above ratio were mixed according to the composition of ...
Example Embodiment
[0028] Example 2:
[0029] 1, the present embodiment of a cordierite based crystallized glass bonded silicon carbide ceramic material, comprising a base material and a binding agent, composed of cordierite base material is a microcrystalline glass powder (particle size 35μm) 20wt%, silicon carbide oxidation pretreatment aggregate 80wt% (aggregate of silicon carbide oxidation treatment at a temperature of 1100 ℃ 1h prepared, wherein the particle size of 30 mesh 40wt%, particle size 50 mesh 10wt%, 200 object size 10wt%, particle size of 325 mesh 20wt%). Wherein the glass powder composition of cordierite crystallites group of MgO 15wt%, Al 2 O 3 25 wt%, SiO 2 57 wt%, Li 2 O 3wt%. Binding agent concentration of 5wt% PVA solution in an amount of 12wt% binder.
[0030] 2, for example, cordierite glass-ceramics of silicon carbide ceramic material prepared with the present embodiment, the following steps:
[0031] (1) After the above ratio were mixed according to the composition of cordie...
Example Embodiment
[0034] Example 3:
[0035] 1, the present embodiment of a cordierite based crystallized glass bonded silicon carbide ceramic material, comprising a base material and a binding agent, composed of cordierite base material is a microcrystalline glass powder (particle size 10μm) 5wt%, silicon carbide oxidation pretreatment aggregate 95wt% (aggregate of silicon carbide oxidation treatment at a temperature of 1000 ℃ 2h prepared, wherein the particle size of 30 mesh 35wt%, a particle size of 60 mesh 10 wt%, a particle size of 120 10wt%, particle size of 325 mesh 40wt%). Wherein the glass powder composition of cordierite crystallites group of MgO 18wt%, Al 2 O 3 25 wt%, SiO 2 56 wt%, Li 2 O 1wt%. Binding agent concentration of 5wt% PVA solution in an amount of 10wt% binder.
[0036] 2, for example, cordierite glass-ceramics of silicon carbide ceramic material prepared with the present embodiment, the following steps:
[0037] (1) After the above ratio were mixed according to the compositi...
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