Silicon carbide coated graphite sagger and its manufacturing process
A manufacturing process, silicon carbide technology, applied in the combination of graphite products and silicon carbide, silicon carbide-coated graphite saggars and manufacturing processes, can solve the problems of low material cost, easy oxidation of graphite, poor wear resistance of graphite, etc. , to achieve the effect of high yield, high molding precision and excellent oxidation resistance
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Embodiment 1
[0034] Example 1, such as figure 1 As shown, the silicon carbide coated graphite blanket, including graphite 钵 1, the outer surface of the graphite 钵 1 is provided with a silicon carbide layer 3 that matches the outer shape of the stone ink bar.
[0035] The silicon carbide layer 3 is made of silicon carbide, and its thickness is 5-20 mm.
[0036] The silicon carbide layer 3 is provided with a silicon carbide and a graphite intersection 2 between the graphite blankets 1, thus connecting the silicon carbide layer 3 to the graphite 钵 1.
[0037] The present invention increases the silicon carbide layer on the graphite member, the silicon-carbide layer is extremely oxidized, the elastic modulus is 300 gpa (1200 ° C), and the bending strength is 280 MPa (1200 ° C), and the integral strength of graphite is 5-10 times; Further, the silicon carbide hardness is 9, second only to diamond, and its excellent wear resistance greatly increases the life of the graphite parts; and the silicon ca...
Embodiment 2
[0058] Example 2, in step (5) of Example 1, the slurry comprises 58 parts by weight: 75 parts of softened water, 75 parts of silicon carbide, 3.6 parts of carbon, 2.7 parts of carbon fiber, silicon nitride 2.7 parts of fine powder, 2.7 metal tungsten powder, 2.7 parts of carbide powder, 2.7 parts of titanium oxide powder, 3.6 parts of the dispersant, 6.5 parts of the binder; and use the process described in Example 1 to produce silicon carbide coated graphite product.
Embodiment 3
[0059] Example 3, in step (5) of Example 1, the slurry comprises 62 parts by weight: softening water, 85 parts of silicon carbide, 4.4 parts of carbon, 3.3 parts of carbon fiber, silicon nitride 3.3 parts of fine powder, 3.3 parts of metal tungsten powder, 3.3 parts of formula, 3.3 parts of titanium oxide powder, 4.4 parts of the dispersant, 7.5 parts of the binder; and using the process described in Example 1 Mandarized silicon-coated graphite product.
[0060] The above processes can also be used to process graphite ceramic products such as graphite propeller.
[0061] The graphite produced by the present invention has excellent high temperature resistance (maximum temperature up to 1380 ° C); excellent oxidation, corrosion resistance, even in high temperature and corrosive solution; silicon carbide ceramic layer is sufficient Protecting the inner graphite parts are not directly flushing and impact, the life is greatly increased, the silicon carbide ceramic gas porosity is less ...
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Abstract
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