摘要:
A method for producing a silicon nitride honeycomb filter, which comprises heat-treating in a nitrogen atmosphere a green body comprising from 50 to 85 mass % of metal silicon particles having an average particle diameter of from 5 to 50 μm, from 5 to 30 mass % of glass hollow particles having a softening temperature of from 400 to 1000° C. and from 10 to 20 mass % of an organic binder to convert metal silicon substantially to silicon nitride.
摘要:
A method for the production of a silicon nitride filter includes heat treating in nitrogen a green body containing from 40 to 90% of metal silicon particles having an average particle size of from 1 to 200 &mgr;m and from 10 to 60% of a pore forming agent. The green body contains at least 90% of the metal silicon particles and the pore forming agent and forms a porous product. The filter is excellent in heat resistance, corrosion resistance, acid resistance and mechanical strength and suitable for dust arresting or dust removing and is particularly suitable as a filter for particulates. The porosity of the silicon nitride filter is from 40 to 70% and the cumulative pore volume of pores with diameters of at most 1 &mgr;m is from 1 to 15 vol % of the total pore volume.
摘要:
An electrification removing component comprising:a ceramics for removing electrification of which surface resistivity is in a range of 2.times.10.sup.6 through 10.sup.10 .OMEGA./cm.sup.2 ; and an electric conductive material connected to the ground; said ceramics for removing electrification being electrically connected to the electric conductive material with an area by contact or bonding on surfaces of the ceramics for removing electrification and the electric conductive material.
摘要翻译:1.一种带电除去部件,其特征在于,包括:表面电阻率在2×10 6〜10 10Ω/ cm 2的范围内去除带电的陶瓷; 和连接到地面的导电材料; 所述用于除去带电的陶瓷与导电材料电连接,具有通过接触或接合在用于去除带电的陶瓷的表面上的区域和导电材料。
摘要:
To provide a process for producing granules of glass raw materials which have excellent strength and are less likely to form fine powder even when pneumatically conveyed to an in-flight heating apparatus and which are suitable for use in the production of glass by an in-flight melting method, and a process for producing a glass product, whereby high quality glass having a uniform composition can be obtained. A process for producing glass raw material granules for producing a borosilicate glass, which comprises a step of preparing a raw material slurry comprising glass raw materials including boric acid, and a liquid medium in which boric acid is soluble, wherein the amount of boric acid in the raw material slurry is from 5 to 30 mass % to the solid content of the raw material slurry, and the pH of the raw material slurry is at least 6.6, and a step of producing glass material granules from the raw material slurry by a spray drying granulation method.
摘要:
A method for producing a silicon nitride filter, which comprises heat-treating in nitrogen a green body comprising from 60 to 95 mass % of metal silicon particles having an average particle diameter of from 10 to 75 μm, wherein particles having particle diameters of from 5 to 100 μm are at least 70 mass % in the entire metal silicon particles, and from 5 to 40 mass % of a pore-forming agent, to convert metal silicon substantially to silicon nitride. More preferably, the green body contains at least one member selected from the group consisting of an inorganic acid salt, an organic acid salt and a hydroxide containing at least one metal element selected from the group consisting of Mg, Ca, Fe and Cu.
摘要:
A method for producing a silicon nitride honeycomb filter, which comprises heat-treating in a nitrogen atmosphere a green body comprising from 50 to 85 mass % of metal silicon particles having an average particle diameter of from 5 to 50 μm, from 5 to 30 mass % of glass hollow particles having a softening temperature of from 400 to 1000° C. and from 10 to 20 mass % of an organic binder to convert metal silicon substantially to silicon nitride.
摘要:
A method for producing a silicon nitride filter, which comprises heat-treating in nitrogen a green body comprising from 60 to 95 mass % of metal silicon particles having an average particle diameter of from 10 to 75 μm, wherein particles having particle diameters of from 5 to 100 μm are at least 70 mass % in the entire metal silicon particles, and from 5 to 40 mass % of a pore-forming agent, to convert metal silicon substantially to silicon nitride. More preferably, the green body contains at least one member selected from the group consisting of an inorganic acid salt, an organic acid salt and a hydroxide containing at least one metal element selected from the group consisting of Mg, Ca, Fe and Cu.
摘要:
A silicon nitride porous body which is a body having a generally columnar outer shape and at least two through-holes mutually parallel to one another and which has generally perpendicularly oriented columnar crystals on the surface of the through-holes.
摘要:
A method for producing a silicon nitride honeycomb filter, which comprises heat-treating in a nitrogen atmosphere a green body comprising from 50 to 85 mass % of metal silicon particles having an average particle diameter of from 5 to 50 μm, from 5 to 30 mass % of glass hollow particles having a softening temperature of from 400 to 1000° C. and from 10 to 20 mass % of an organic binder to convert metal silicon substantially to silicon nitride.