Jianfeng Yang

Bio: Jianfeng Yang is an academic researcher. The author has contributed to research in topics: Ceramic & Recrystallization (geology). The author has an hindex of 2, co-authored 2 publications receiving 20 citations.

Preparation of oriented hole silicon carbide porous ceramic

Abstract: The invention discloses a preparation method of a porous silicon-carbide ceramic provided with oriented pores. Firstly, according to weight percentage, 0 to 30 percent of carbon powder, 0 to 50 percent of silicon powder and 0 to 60 percent of silica are added into the 10 to 100 percent of the basic material of silicon-carbide; wherein, the granularity of the silicon-carbide is W3.5 to P220, and one granularity or two granularities are adopted for graduation; then the equally mixed materials are processed through powder accumulation or normal ceramic forming process to obtain a green compact which is put into a graphite crucible or a saggar; the graphite crucible or saggar is placed into a vacuum sintering furnace provided with a temperature field with a temperature grade from 15 to 30 DEG C/cm, and then the temperature is raised to 1900 to 2500 DEG C in an argon environment and with pressure of 0.2 to 1 multipliedby 10 Pa, and the insulation work for the graphite crucible or saggar is preserved for 0.5 to 3 hours; finally the temperature naturally falls down under air protection and the sintered body is taken out, namely, the recrystallization porous silicon-carbide ceramic provided with oriented pores is obtained.

Ceramic plate for curtain wall decoration and preparation method thereof

Abstract: The invention relates to a ceramic plate for curtain wall decoration and a preparation method thereof. In the ceramic plate, a raw material formula comprises coarse ceramic aggregates and fine plastic materials, and ceramic slurry comprises the following components of bentonite, illitic soil, kaoline, pyrophyllite, quartz, feldspar, waste clinker, and water. The preparation method comprises the following steps of: uniformly mixing the ceramic raw materials according to a proportion of 45-65 wt% of aggregates and 35-55 wt% of plastic materials; then adding 12-16 wt% of water; shaping by using a spiral extruder; drying, and sintering at 1050-1350 DEG C in a raceway kiln. The obtained slurry has a favorable extrusion property, green bodies are easy to dry and sinter, and the ceramic plate has high strength, small contraction and difficult cracking.

Al/Sic and Cu/Sic composite material friction pair used for railway vehicle and manufacturing method thereof

Abstract: The invention relates to an Al/Sic and Cu/Sic composite material friction pair used for railway vehicles and a manufacturing method of the Al/Sic and Cu/Sic composite material friction pair and belongs to the technical field of manufacturing of friction pairs. A friction pair in the prior art has the defects of being complex in the production technology, poor in heat conduction performance and short in service life. A network silicon carbide ceramic framework is embedded in the friction face of the friction pair, a plurality of heat dissipating ribs are arranged in the circumferential direction of the other side of the friction pair, a ventilation channel penetrating through a brake disk is formed in the middle of each heat dissipating rib, the network silicon carbide ceramic framework is embedded in the friction face of a Cu/Sic brake pad, and latticed heat dissipating fins are arranged on the other side of the Cu/Sic brake pad. The manufacturing method of the Al/Sic and Cu/Sic composite material friction pair includes the steps of manufacturing the network silicon carbide ceramic framework, pretreating the framework, designing and manufacturing the brake disk and a brake pad casting die, casting the brake disk and the brake pad at low pressure, performing thermal treatment on the brake disk and the brake pad, performing precision machining on the brake disk and the brake pad and putting the finished product in storage. The Al/Sic and Cu/Sic composite material friction pair is simple in manufacturing technology, light in weight, high and stable in frictional coefficient, good in heat conduction performance, long in service life and suitable for the existing railway vehicles.

Dry hanging ceramic plate composition

Abstract: The invention relates to an improvement on a dry hanging ceramic plate material composition, which is characterized in that the pug consists of the following ingredients: 40 to 65 weight percent of mixed pottery clay, 0 to 20 weight percent of plastic pottery clay, 0 to 15 weight percent of kaolin, 0 to 20 weight percent of feldspar, 10 to 25 weight percent of unglazed ceramic waste slag recovered materials with the basically identical firing color and 1 to 3 percent of additionally added bonding agents for ceramics. The original performance and process of a ceramic plate are maintained, in addition, the gradually reduced raw ore pottery clay resources are saved, the recipe cost is saved by 5 to 10 percent, and in addition, a novel path is provided for the utilization of ceramic waste slag.