Saggar

About: Saggar is a research topic. Over the lifetime, 97 publications have been published within this topic receiving 217 citations.

Preparation method of iolite-mullite ceramic saggar

Abstract: The invention provides an iolite-mullite ceramic saggar and a preparation method thereof and relates to the field of iolite-mullite ceramic. According to the preparation method of the iolite-mullite ceramic saggar, aggregate is prepared from the following raw materials in percentage by mass: 40 to 55 percent of mullite, 35 to 45 percent of iolite and 10 to 15 percent of molochite; a matrix material is prepared from the following raw materials: 10 to 15 percent of iolite micro-powder, 30 to 40 percent of quartz micro-powder, 20 to 30 percent of aluminum oxide micro-powder, 10 to 15 percent of magnesite micro-powder, 5 to 10 percent of zirconium oxide and 5 to 10 percent of zirconium quartz; the materials are uniformly mixed in a material mixing machine and a binding agent is prepared into awater solution according to the mass ratio of water to the binding agent of 100 to 4; the iolite-mullite ceramic saggar is prepared through the steps of preparing slurry, preparing pug, molding, drying and sintering. According to the iolite-mullite ceramic saggar, the mullite is added into the aggregate due to the fact that the mullite has good high temperature resisting performance; after the materials are prepared into the pug through wet-process molding, the pug is extruded and molded; a molded blank has uniform density and a microscopic structure.

PTC thermistor ceramic sintering saggar coating and preparation method and application thereof

Abstract: The invention relates to a PTC thermistor ceramic sintering saggar coating and a preparation method and application thereof. The formula of the coating comprises the following components in percentages by weight: 30% of Pb3O4, 24% of BaCO3, 28% of TiO2, 14% of ZrO, 2.3% of CaCO3 and 1.7% of SiO2. The preparation method comprises the following steps: preparing base materials and ball-milling into a sizing agent, drying the sizing agent and putting in a tunnel kiln for synthesis, then compounding and ball-milling to prepare a coating, and then performing twice sintering to obtain the coating. The coating is mainly applied to the inner surface of a PTC thermistor ceramic sintering saggar. The coating is prepared on the inner wall of the sintering saggar, and when a PTC thermistor ceramic plate is loaded, the coating blocks the direct contact between the PTC thermistor ceramic plate and a corundum-mullite mixed saggar, so that the chemical reaction of the PTC thermistor ceramic plate and the corundum-mullite mixed saggar is prevented, and then the quality of the PTC thermistor ceramic plate is guaranteed.

Aluminium titanate-spinel saggar, preparation method and application thereof

Abstract: The invention relates to the field of refractory kilns and particularly provides an aluminium titanate-spinel saggar, a preparation method and application thereof. The aluminium titanate-spinel saggaris mainly prepared from the following raw materials in parts by mass: 25-35 parts of aluminium titanate, 15-25 parts of spinel with the particle diameter being not more than 1mm, 20-30 parts of spinel with the particle diameter being not more than 46.9mu m, 8-12 parts of titanium dioxide, 12-16 parts of aluminium oxide, 0.5-1.5 parts of magnesium oxide powder and 2-4 parts of yellow dextrin. Thealuminium titanate-spinel saggar provided by the invention has the advantages of strong corrosion resistance, good heat stability, long service life and low use cost, and has the beneficial effects that the source of all the raw materials is wide, and the price is low, so that the production cost of the saggar is also lower.

Yellow pigment composition of ceramic ink and preparation method thereof

Abstract: The invention belongs to the technical field of ceramic pigments and in particular relates to a yellow pigment composition of ceramic ink and a preparation method thereof, mainly solving the following problems of traditional pigments: low calcination temperatures, low chromogenic saturation, long working hours and low efficiency. The yellow pigment composition of ceramic ink is prepared from zirconium dioxide, quartz powder, praseodymium oxide, barium fluoride, potassium chloride and ammonium chloride. The method specifically comprises the following steps: (1) mixing the materials; (2) firstly mixing glass powder with low-temperature ceramic frit to prepare glaze, pouring the milled glaze into a saggar, shaking up the milled glaze and smearing the milled glaze on the inner surface of the saggar, wherein the thickness of the glaze on the wall and at the bottom of the saggar is 0.1-1mm; (3) airing the smeared saggar; (4) calcining the materials; and (5) using a micro-pulverizer for treatment after crushing, thus preparing the yellow pigment composition of ceramic ink.

Ceramic core bodies

Abstract: Firing of ceramic cores (1) is important in order to achieve manufacturing processes. These ceramic cores (1) are generally formed in a "green" state which has limited mechanical strength and may be distorted during the firing process by non-uniform thermal effects, etc. By providing a tube or containment 2 which is located on a saggar base 3 and surrounded by firing media 4, it is possible to achieve an initial pre-firing step whereby the "green" state core 1 is located through a stem 1a in an initial partial depth 5 of firing media 4 in the tube or containment 2 until it achieves a sufficient mechanical strength to enable positional adjustment. Thus, the green core will be prefired in a kiln solely supported through the stem la and then the core adjusted using a tool such as an engineering rule. There is a positional accuracy between the walls of the tube or containment 2 and the saggar base 3 between all cores and then the tubes 2 filled and leveled with further firing media 4 for the main firing of the core 1 in use.