烧结的

It is found by the composite design test that the optimal MgO content in limonite sinter ranges from 2.5%to 4.5% and through the mineralogical and electron microprobe analyses,the mechanism of the influence of MSO on limonite sintering was revealed.

通过组合试验，找出了褐铁矿烧结MgO含量的最佳控制范围为2.5％～4.5％，通过对烧结矿的矿相分析及电子探针分析，找出了MgO影响褐铁矿烧结的内在原因。

Experimental study of high temperature phase transformation for pyrophyllite

利用场发射扫描电镜表征了Zr-Co粉体的形貌特征和烧结后的陶瓷薄膜结构，热重分析了Zr-Co粉体烧结过程的失重和相转变吸放热过程，X射线衍射分析跟踪了不同温度段烧结体系的组成变化趋势，在此基础上对粉体烧结后陶瓷薄膜的防氧化效果进行了分析，结果表明：温度对粉体的颗粒形貌和晶相结构有较大的影响，高温烧结的粉体性质稳定，经过1200℃烧结后的陶瓷膜层具有很好的致密性，具有很好的防氧化效果。

The main results of investigation are as follows:(1) By hot-pressing sintering with equimolar Y2O3 and La2O3 as additives, a dense in-situ toughened Si3N4 is prepared.

1选择等摩尔Y_2O_3和La_2O_3作为烧结助剂，利用热压烧结的方法制备致密的自增韧Si_3N_4陶瓷，其相对密度高达99.8％，在1800～1840℃烧结1～2h可得到相对密度超过99％的Si_3N_4。

After optimizing the technological technique, the parameters on microwave magnetic sintering of NdFeB magnets were chosen: the powder with average particle size of 3μm was isostatically pressed at 2000kg/C㎡, and the shape of the green compact is φ18×6mm.

进行工艺优化后，我们所选用的微波烧结参数为：微波功率2kW，粉体的平均粒径3μm，压型压力2t/cm2，初坯为φ18×6mm的圆柱体，烧结最高温度约为900℃，烧结的时间70s左右。

Also the phase transition temperature from hexagonal ZnTiO_3 phase to cubic Zn_2TiO_4 was lowed by adding V_2O_5. It was noticed that V enriched in the boundary of the exaggerated grains, while not be detected in the inner of exaggerated grains or in the boundary of small grains. At sintering temperature 50℃, orthotitanate phase Zn_2TiO_4 in zinc titanate ceramics with ≤1.00wt% WO_3 additions became major phase, while zinc metatitanate ZnTiO_3 became major phase with ≤1.00wt% WO_3 additions.

结果表明：单独掺杂V_2O_5和WO_3有效降低了陶瓷烧结温度，900℃烧结的掺杂0.75wt%V_2O_5钛酸锌陶瓷密度可达理论密度的96.1%，930℃烧结的掺杂3.00wt%WO_3钛酸锌陶瓷的密度达理论密度的95.2%；V_2O_5的添加使六方相ZnTiO_3的分解温度从900℃降到了850℃以下，V_2O_5富积于陶瓷体的晶界处，在V_2O_5富积区附近产生了异常长大的晶粒。

In this paper,the merits of explosive sintering and its development are introduced first,then the method of explosive sintering and the mechanism of sintering are displayed,the relation of initialized specific volume to Hugoniot line of W-Ti is analyzed according to the discuss of Hugoniot line of pulverous materials.

本文首先对爆炸烧结的优点和国内外发展概况做了说明，接着对爆炸烧结方法和烧结机制作了简介，然后通过对粉末材料冲击绝热线的讨论，分析了W-Ti粉末冲击绝热线与其初始比容间的关系。

In this paper,the merits of explosive sintering and its development are introduced first,then the method of explosive sintering and the mechanism of sintering are displayed,the relation of initialized specific volume to Hugoniot line of W-Ti is analyzed according to the discuss of Hugoniot line of pulverous materials.

本文首先对爆炸烧结的优点和国内外发展概况做了说明，接著对爆炸烧结方法和烧结机制作了简介，然后通过对粉末材料冲击绝热线的讨论，分析了W-Ti粉末冲击绝热线与其初始比容间的关系。

The appropriate conditions were shown:The green tablets were shaped under 300 MPa uniaxially and sintered up to 1 300 ℃ then kept at that temperature for 4 hours.

在最佳烧结条件下烧结的HAP陶瓷，烧结密度达2.81 g/cm3，相对密度达89%。SEM照片显示为紧密排列的六边形晶粒的集合体。

The results show that the ambient oxygen and ratio of the materials are critical to microwave sin...

结果表明：利用微波反应烧结β′-Sialon，原料配比和炉气中氧含量很关键；微波反应合成烧结Z值等于3的β′-Sia-lon的最佳工艺是1500℃、保温90 min，该工艺烧结的材料密度为3.050 g/cm3和室温抗弯强度为150 MPa。

In comparison with the sample directly sintered at 650 ℃＜TN, an interesting, irreversible transformation in the crystal structure of the MgB2 phase is observed with the sample going through the stages of initial sintering at 750 ℃, then re-sintering at 650 ℃ in an Mg-rich environment after the processes of regrinding and pressing.

把直接在650 ℃＜T N，烧结的样品与先在750 ℃下烧结，之后又再次重磨和处理后，并于富镁的环境中在650 ℃下再烧结处理的样品相比较，观察到了MgB2的不可逆的晶体结构转变。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐