Dry stock of silica sol ceramic mould was prepared by using of colloidal moulding technique with an optimized vacuum drying process.Effect of roasting process on the shrinkage rate and compressive strength of zircon-silica sol ceramic mould,and the relationship between the roasting temperature and microstructure of zircon-silica sol ceramic mould were studied.The optimum roasting temperature of zircon-silica sol ceramic mould gained by the experiments is 900℃ and the holding time is 2 h.The scanning electron microscope(SEM) observation showed the growth of refractory particles during the roasting process.The occurrence of sintering was observed in the zircon-silica sol ceramic mould when roasting temperature was above 1,000℃.
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机译:Substituent-dominated structure evolution during sol-gel synthesis: A comparative study of sol-gel processing of 3-glycidoxypropyltrimethoxysilane and methacryloxypropyltrimethoxysilane
机译:对联合国EB理事会拒绝和撤消中国CDM项目注册原因的研究和思考——关于在CDM项目审核过程中真实性原则基础地位的缺失导致信息处理中的过度保守性问题Study and Consideration on the Reasons for Registration of China CDM Project to Be Rejected and Withdrawn by Climate Change Executive Board of United Nations——Concerning the Issue That Shortage of Objectivity as Basic Principle in Process of Validation of CDM Project Leads to Over Conservative in Information Processing