合金法

Fe84Nb7B9 and Fe80Ti8B12 alloy powder prepared by MA method and the microstructure and magnetic properties of bulk alloys prepared by hot-press sintering process were studied.

研究了MA法和热压烧结工艺制备的Fe84Nb7B9和Fe80Ti8B12合金粉末的产物及其块体合金的微观组织结构和磁性能。

The hypereutectic Al-Si alloy produced by electro-thermal methods was modified with P and RE, then the microstructure and mechanical properties of alloy were analyzed.

中文摘要：对电热法生产铝硅合金配制的Al-20Si合金进行了P-RE复合变质处理，对变质后的微观组织和力学性能进行了分析。

On the basis of Ni-S alloy electrode made by electrodeposition method, Ni-P-S alloy electrode was obtained by adding sodium hypophosphite monohydrate into the bath.

在电沉积法制备Ni-S合金电极的基础上，向镀液中添加次亚磷酸钠制备了Ni-P-S合金电极。

It has been found that during the spark plasma sintering process, under the condition of large current, short sintering time and lower sintering temperature, the metastable icosahedron quasicrystal phase in primary powder particles is kept. And the strong discharge plasma among particles can decompose or break the oxide film on the primary powder's surface, resulting in the increment of their combination strength. So the as-prepared bulk alloy possesses high density and ultra-high strength.

结果表明，在放电等离子烧结过程中，采用大电流、短时、低温的烧结条件可使快冷雾化法制备的原始合金粉末中的准晶强化相及其它细小强化相得以保存，而局域强放电等离子体可以分解或破碎铝合金粉末表面的氧化膜，使合金粉末颗粒间的结合强度增加，制备出的块体铝合金具有高的致密度和超高强度。

The microstructures and phases of the alloys were analyzed by OM, SEM and XRD; the erosion resistance of the alloys prepared by different processing were measured under the conditions of simulated-brine and salt atmosphere, besides the various corrosive rates were calculated by the method of weight lost; the lows of corrosion were analyzed by the electrochemical polarization curve, and the corrosive current was measured through the method of Tafel linear extrapolation.

用光镜、扫描电镜、X射线衍射分析了合金的组织与相的组成，测试了模拟海水及盐雾条件下三种工艺制备的材料的耐腐蚀性能，并用失重法定量计算各自的腐蚀速率；利用电化学极化曲线法分析了三种工艺制备的材料腐蚀规律，用塔菲尔直线外推法测定腐蚀电流。

By adding minor amount of cheap element Fe into metallic glass based on Zr65Cu17.5Al7.5Ni10 composite, bulk metallic glass in diameter of 3 mm was successfully synthesized by copper mold suction casting method at different voltages.

对以Zr65Cu17.5Al7.5Ni10为基体的非晶合金中添加微量廉价的Fe元素，采用铜模吸铸法在不同电压下制备出直径3 mm大块非晶合金。

It is also found that if the monatomic model of Johnson is used the pair potential constructed by the former method can give correct heats of solution.

发现如果采用第三章的模型作为单种原子的埋入原子法模型，则由前者构造的合金对势V〓不能给出正确的溶解热，而由后者构造的合金对势V〓却能给出基本正确的超结构的晶格常数、体模量和结合能。

It is concluded that if the monatomic model of Chapter 3 is used the pair potential constructed by the former method cannot predict correct heats of solution, while the pair potential constructed by the latter method can predict the lattice constants, the bulk moduli and the cohesive energies of the Ll〓 superstructures formed by the two kinds of atoms within acceptable accuracy.

推广到合金的情况，提出了由某个二元超结构的结合能曲线和由稀极限溶解热反演埋入原子法的合金对势V〓的两种不同的方法。

The performance and mechanism of corrosion inhibitions of POCA were studied bymethods such as weight-loss, electrochemistry, EDS, XPS and quantum chemistry. It isfound that POCA is cathodic corrosion inhibitor, having synergistic effect with HEDP andZn~(2+). The P and O atoms of phosphono have important electron density contribution toHOMO orbital and the electron gross orbital population is bigger than 1, so it is easy toform absorbing location between phosphono and metal resulting in good corrosioninhibition on mild steel.

通过利用失重法、电化学方法、扫描电镜、X光电子能谱、X-射线能谱和量子化学方法研究膦酰基羧酸的缓蚀性能及其机理，发现POCA是一种阴极型缓蚀剂，与HEDP、Zn~(2+)具有优良的协同增效作用；POCA分子中的膦酰基基团的P原子和O原子对HOMO轨道电荷密度贡献较大，且其轨道电子布居数均大于1，因此比较容易通过膦基与金属形成吸附位而对碳钢具有良好的缓蚀作用；对铜合金具有一定的腐蚀作用，但腐蚀作用比HEDP等有机膦药剂要小得多，同时与BTA具有优良的相容性，添加1mg／L的BTA则可以有效地防止铜合金的腐蚀。

Temperature field is obtained by Direct Finite Difference Method with parallelepiped mesh elements and the latent heat release is handled with a combination of equivalent specific heat method and temperature recovery method.

计算方法采用直交剖分的直接差分法；潜热处理采用等价比热法与温度修正法相结合的方法；在节约内存量和提高计算速度的基础上尽可能提高计算精度，并在三者之间取得合理平衡；对直交剖分带来的误差采用了热容量修正技术；针对不同铸造合金的凝固特点，对收缩缺陷判据进行了研究和扩展。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。