高镍的

Microstrucfure of the powder samples achieved such as crystallographic structure, grain size, particle morphology, element analysis and thermal decomposition were characterized by means of X-ray diffraction, transmission electron microscopy, electron diffraction, energy dispersion X-ray spectroscopy and differential thermal analyzer etc.

结果表明，所制备的钠米镍粉、镍铜及镍铜硼复合粉呈颗粒均匀的球形或类球形，粒径在40nm～60nm之间。采用DTA方法对添加了纳米粉的高氯酸铵、AP／HTPB推进剂热分解情况进行表征。

The main innovation contents in this dissertation are as follows:For the first time, membrane electrolytic method was used to prepare high-purity nickel chloride solution for producing special nickel powder in a membrane electrobath designed ourselves, and with choosing anion membrane.

本文的主要创新内容有：首次采用膜电解电溶法制备高纯氯化镍溶液，通过阴离子交换膜的选择，在自行设计的膜电解槽中控制适当的电解条件，制备出满足生产特种镍粉要求的氯化镍溶液。

Based on KT-01 nickel catalyst, the scientific research personnel of our company and the expert group of the former subject group from Lanzhou University made joint efforts to tackle the key problems and successfully developed the 2nd generation of KT-02 supported nickel catalyst through in-depth study on the technical formula, catalytic activity and other mechanisms and taking modified carrier, the properties of acid and alkali, the degree of decentralization of active ingredients on the carrier surface, and fundamental breakthrough has been achieved on the aspects of catalytic activity, specific surface area, bulk density, etc, and the technical defects of KT-01 nickel catalyst are completely overcome; the catalytic activity becomes higher, the starting temperature becomes lower, the industrial serviceability temperature is lowered and the yield increased.

在KT-01型镍催化剂的基础上，我公司科研人员与兰州大学原课题组专家联合攻关，通过对工艺配方及催化活性等机理的深入研究，从载体改性、酸碱性、活性组分在载体表面的分散程度等方面入手，成功开发出第二代KT-02负载型镍催化剂系列产品，在催化活性、比表面积和堆密度等方面都有根本性突破，彻底克服了KT-01型镍催化剂的技术缺陷，使催化活性更高、启动温度更低，降低了工业使用温度，提高了生产收率。

Connecting with the new properties of NiP amorphous alloys which are prepared by method using nickel hypophosphite as reac-tant,applications of el ectroless nickel in high technological field are described in brief.

本文阐述了化学镀镍在国内外的应用及前景；结合以次磷酸镍为原料的新方法制备的高质量NiP非晶态合金的新性能，介绍了化学镀镍在高科技领域中的应用。

Based on the amorphous structures of Ni-P alloys derived from X-ray diffraction determination, R〓 or Tp is reasonably explained in terms of the variation in the metal -metalloid bond numbers with P contents according to the rhomb unit structure model .

首先，它对镍晶核的形成有阻碍作用，TU浓度越大，成核所需的过电位越高；其次，在存在镍晶核的表面上，TU对镍颗粒的生长起促进作用，藉此也可解释TU对化学镀层形貌的影响。

The THFA yield and selectivity were 2.0%higher than those by using catalyst Ⅰ without promoter,3.0%higher than those by using Raney nickel catalyst under the same reaction conditions and furfuryl alcohol conversion.

在相同反应条件和糠醇转化率条件下，四氢糠醇收率和选择性均比没有助剂的镍催化剂Ⅰ高2.0%，比骨架镍催化剂高3.0%。

The process of three-step countercurrentleaching is presented, in the first leaching step Fe as leading impurity inthe matte is leached priorly, Co and Ni are enriched in the residue of thefirst step and then are leached in the second leaching step with a lowconcentration acid, the residue from the second step containing hardleaching Fe, Co and Ni are leached with a high concentration sulfuricacid in the third step, and Cu stays in the final resude, the leachate of thethird leaching step is diluted and divided into two parts as the leachantsto the first and second leaching step.

在此基础上，提出了三段逆流选择性浸出技术：即第一段用低酸优先浸出钴冰铜中杂质铁，将钴镍富集到第一段的浸出渣中，第二段再用低酸浸出渣中部分钴镍，第三段用高酸浸出第二段渣中难浸的钴镍铁，将铜留在最终的浸出渣中，第三段浸出液经稀释，分流，分别返回至第一段，第二段作低酸浸出介质。

In this paper,the discussion is emphasized on the following process flowsheets in Chinese nickel metallurgy,such as the current smelting of low nickel matte with electric furnace and flash furnace concerting of high nickel matte with concterer separation of nickel from copper in grinding and flotation process anode electrolyting of nickel sulphide;two stage counter current ...

本文重点论述了我国镍冶金现有的电炉、闪速炉熔炼低冰镍－转炉吹炼高冰镍－铜镍磨浮分离－硫化镍阳极电解；高冰镍两段逆流硫酸选择性浸出－黑镍沉钴－电积；二次镍精矿制粒－沸腾焙烧生产氧化镍等工艺流程。同时，介绍了我国自行研究开发的高冰镍氯化精炼；焙烧－氨浸－氢还原；镍精矿微波脱硫－热等离子体熔炼高冰镍；大洋多金属结核常压氨浸和硫酸选择性浸出回收镍等有价金属的新工艺新技术。

Adding strong-carbide-formation elements to Ni-based self-fluxing alloy powder,composite coatings were obtained,which were reinforced by in-situ synthesized particles on CrCuB alloy gray iron substrate by laser cladding.

针对车用内燃机排气门座圈高温、高交变应力和高腐蚀性工况，采用添加了强碳化物形成元素的镍基自熔合金粉末，通过激光熔覆，在CrCuB合金灰铸铁基体上制备了原位合成的颗粒增强镍基复合涂层。

The factory mainly produces phosphorous copper, bronze, copper-tin alloy, red brass, chromium positive pole and zinc bar and plate, as well as some industrial chemicals such as nickel plate, electrolytic copper, cupric sulfate, nickel sulfate, and nickel chloride etc.

本厂生产的磷铜球、磷铜角、青铜板、铜锡合金、红铜角、铬阳极、锌条、兼营的镍板、电解铜、硫酸铜、硫酸镍、氯化镍等各类化工原料，凭借品质高、口碑好、价格合理的优势畅销珠江三角洲及中国其它地区。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。