翡翠粉体成型工艺研究  

The Forming Process of Jade Powder

作　　者：叶未[1] 于杰[1] 贾清翠 陈敬超[1] 甄翠玲[1] 

机构地区：[1]昆明理工大学材料科学与工程学院,云南昆明650093

出　　处：《昆明理工大学学报（自然科学版）》2013年第6期24-27,共4页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(50874054);云南省教育厅基金项目(2010Y363);大学生创新计划项目(201310674204)

摘　　要：利用天然缅甸翡翠边角料及杂质较多低档翡翠进行粉体法翡翠再造,对影响翡翠色泽、硬度、致密度等因素进行了研究.结果表明:通过磁选的方法可去除内部翡翠影响透明度的弱磁性的闪石和含铁矿物,含铬硬玉中Cr3+在热扩散过程中使颜色分布均一,无铅硼酸盐玻璃的添加使SPS烧结能达到理论致密度的96%.烧结样品的硬度高于天然翡翠,X射线分析表明存在部分物相转变,压力和快速烧结有利于抑制相变.Recycling jade is made by pressing and sintering the powder which consists of leftover pieces or low - grade natural jadeite from Myanmar. The influencing factors for recycling jade such as color, hardness and densi- ty are studied. The experimental results show that： amphibole with weak magnetism or iron ore can be removed by magnetic separation ; the color distribution is uniform in the process of chromium - rich jadeite thermal diffu- sion ; and the samples achieve 96% of theoretical density by SPS sintering, the hardness of which is higher than the natural one. The phase transition is found by XRD spectrum. Stable pressure and rapid sintering may restrain the phase transition.

关 键 词：翡翠再造 高温高压 放电等离子体 球磨 致密度 

分 类 号：TB321[一般工业技术—材料科学与工程]