【摘 要】
：
We developed cordierite-mullite composite ceramic materials to package and encapsulate PCM, and presented a preparation process from raw materials of kaolin, talc and alumina. The properties and microstructre of cordierite-mullite composite ceramic were s
【机 构】
：
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
We developed cordierite-mullite composite ceramic materials to package and encapsulate PCM, and presented a preparation process from raw materials of kaolin, talc and alumina. The properties and microstructre of cordierite-mullite composite ceramic were studied. Due to the strengthening effects of mullite, the sample C2 (80 wt％ of cordierite and 20 wt ％ of mullite) sintered at 1420 ℃ possessed excellent physical properties. Determined by X-ray diffraction (XRD), scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS) analysis, cuboid-shaped cordierite crystals and needle-like or long quadrilateral-prism mullite crystals with staggered patterns were found, which endowed the composites preferable mechanical strength. After 30 cycles of thermal shock (room temperature to about 1100 ℃, air-cooled), the sample presented superior thermal shock resistance, which is suitable to be applied as solar thermal storage materials.
其他文献
The present study aimed to improve the pervaporation (PV) performances of polydimethy-lsiloxane (PDMS) membranes by using special cross-linkers. The γ-methacryloxypropyl trimethoxy silane (KH-570) cross-linked PDMS membranes were fabricated and characteri
Based on the mechanical properties and microstructure of polyurethane foam solidified material, a two-dimensional model of polyurethane foam solidified material was constructed. Polyurethane foam was obtained by fully and uniformly mixing the two componen
A citrate-assisted hydrothermal method was utilized for the preparation of Sr-substituted hydroxyapatite (HA) nanoparticles. The influences of Sr-substituting degree on the phase identifications, microstructures and colloidal stability of the resultant pr
Fly ash (FA) was utilized to hydrothermally synthesize FA based Al-substituted tobermorites, and was combined with raw materials of FA and municipal solid waste incineration fly ash (MSWI) to hydrothermally synthesize FA-MSWI based Al-substituted tobermor
In order to reflect truly the damage evolution mechanism of weak muddy intercalation in dry-wet cycles, two typical weak muddy intercalations were selected for dry-wet cycles. The mineral changes of specimens were analyzed via X-ray diffraction after dry-
The bovine hydroxyapatite (BHA) was applied to prepare biological tissue engineering scaffolds by the method of extrusion freeforming.To achieve this goal,BHA were added to sodium alginate (SA) solution to form a slurry system in appropriate proportion.Th
Mg/Ni hybrid foams were fabricated by the electroless method. The Ni-P (Nickel-Phosphorous) coatings were deposited on the surface of closed-cell Mg alloy foams. The composition, microstructure and phases of the Ni-P coatings were characterized by scannin
Ti(C,N)-TiB2 cermets were fabricated from Ti(C,N), TiB2, Co and WC powder mixtures via a vacuum hot pressing process. The influence of TiB2 content on their microstructures and mechanical properties was investigated. As a result of the elevated TiB2 conte
A low-cost and efficient filter medium for Cd(II) removal was prepared by anchoring -SCN functional groups (by 3-thiocyanatopropyltriethoxysilane, TCPS) on ceramsite via the approach of synthesizing a honeycomb calciumaluminum-silicate-hydrate (C-A-S-H) l
An adhesive of the SiBCN ceramic was synthesized through the polymer derived ceramics (PDC) route. Meanwhile with higher adhesion strength and simpler process condition, the polyborosilazane (PSNB) was modified by E-44 epoxy resin. The E-44 epoxy resin wa