Preparation method of steel cord enhanced graphite silicon carbide crucible
A silicon carbide crucible and steel cord technology is applied in the preparation of steel cord reinforced graphite silicon carbide crucible, the preparation of high-performance special refractory ceramics and composite ceramic products, and can solve the problems of high price, cracking, low mechanical strength, etc. , to achieve the effect of improving the service life
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[0022] Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:
[0023] As shown in the figure, the present invention selects a copper-coated steel cord of a certain specification, and the diameter of the steel cord is between 0.5 mm and 2.0 mm, with 1.55 mm being the best. The diameter of the steel cord should not be too thin, otherwise the breaking force will be reduced and the enhancement effect cannot be achieved. At the same time, the diameter of the steel cord should not be too thick, otherwise it will be separated from the ceramic substrate due to the large thermal expansion in the subsequent high-temperature sintering process. Tensile strength of steel cord>1500 N / mm 2 , the thickness of the copper plating layer is 0.1 to 0.6g / kg, with 0.25 being the best.
[0024] The steel cord is covered with an alloy coating by electroless plating. The alloy coating can be pure tungsten, chromium, molybdenum, or an alloy of...
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