| Glass-ceramics composed of aluminous silicate have excellent characteristics such as high mechanical strength, abrasion-resistance and chemical stability, which make it have wide broad applications in space and aircraft, mechinery, architecture and chemical engineering. The raw materials of the system is abundant, therefore the research about the system has become a focus of glass-ceramics. The compositions and properties, nucleation and crystallization of the system have been made considerable research, however, It has not been reported much to improve the abrasion-resistance so as to widen its applications as structure parts in abrasion and erosion environments, here we would like to develop a glass-ceramics with good abrasion and erosion resistance to meet better needs for structural engineering applications.The development, fabrication technology and failure characteristics of glass-ceramics were systematically reviewed. A new type of glass-ceramics with good abrasion and erosion resistance was prepared by melting method using quartz, feldspar, dolomite and calcite et al as the starting materials. CaF2, Cr2O3 and ZrO2 were used together as multi-nucleating agents. The phase compositions of the glass-ceramics were analyzed by x-ray diffractory. Results show that the main crystalline phases are diopside [CaMg(SiO3)2] and wollastonite [ -CaSiO3]. Microstructure of the glass-ceramics were observed by scanning electronic microscopy. It has a uniform structure with crystal particles about 100nm.CaF2 can decrease the temperature and activation energy of the base-glass for crystallization. When 4 wt% CaF2 was added in the glass, the crystallization temperature and activation energy is 936 and 172.75 KJ/mol respectively. When CaF2 was increased to 6 wt%, the temperature and activation energy decreased to 890 癈 and 88.81 KJ/mol. CaF2is an efficient nucleation agent for the abrasion resistant glass-ceramics, the optimal content of CaF2 is about 6 wt%. Multi-nucleating agents composed of CaF2, Cr2O3 and ZrO2 can further decrease interface energy of the glass system for crystallization so as to get a glass-ceramics with homogeneous, dense and fine microstructure. The optimal contents of CaF2, Cr2O3 and ZrO2 arecorrespondingly 6 wt %, 1.2 wt % and 6 wt %, which were determined by orthogonal tests.The addition of CeO2 can improve the clarifying degree of glass melt by elimination of the residual bubble, increase the alkali resistance and mechanical properties of the glass-ceramics. The optimal amount of CeO2 is about 1.5 wt%. The change of MgO content in the system has obvious effects on properties of the glass-ceramics. When the content of MgO increased from 6 wt % to 15 wt %, the bending strength and the Vikes-hardness of the glass-ceramics gradually increased, at 15 wt % MgO, up to 275MPa and 7.98Gpa respectively. When MgO contents over 15 wt %, the properties of the material decreased owing to the increase of glass phase.Crystallization parameters have remarkable influence on the abrasion resistance and bending strength of the glass-ceramics. The optimal parameters for this system are Tn=790 , Tn=1.5h; TC=930 , T c=0.8h and heating rate is less than 5癈/min, which were obtained by orthogonal tests. The glass-ceramics show a bending strength of 278MPa and a Viker-hardness of 7.98GPa. The wear resistance of the glass-ceramics is 1.5 times as that of 90% AbOs ceramics.Friction and wear are important application performance for engineering materials. Tribological characteristics of the glass-ceramic was evaluated, especially in the effects of load, sliding speed on friction and wear performance. The wear mechanism was analyzed by the technology of surface micro-analysis and principles of tribology. Experimental results show that the sliding between crystalline particles, and plough groove, fracture stripping and micro-cracks in the surface layer are the main mechanism for the wear loss. When the load were increased from 20N to 40N, the wear loss quickly increased with the load, and the wear loss at 4...
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