表面覆层

To determine the laser power accurately, the absorptance of the aluminum surface to the laser energy must be given and the measure methods has been...

对比了不同激光功率密度、扫描速率和不同粉末粒度、粉末预置厚度条件下所形成的熔覆层，确定了铝合金表面激光熔覆的工艺参数范围。。。。

The results show that the temperature and time are important factors to speed up the hydration of cenosphere in calcium hydroxide solution.

根据反应体系中氢氧化钙最强衍射峰强的变化规律，研究了微珠表面包覆层生长机制和包覆机理。

The result is that content of organic overlap is degression function of nanocrystalline average size.

使用TG-DTA测试研究了纳米颗粒表面有机包覆层的性质，结果表明包覆剂含量是纳米晶平均颗粒度的单调递减函数。

The rate capability of the alloys is improved after plating, due to the fine particles formed through hydrogen crisping and the nickel layer contributed to the conductivity of electrodes.

镀镍层有利于贮氢合金氢化物电极大电流放电，这种作用源于微包覆过程中氢脆引起合金颗粒的细化与表面镀层增强了电极的导电性。

The experimental results indicate that on the condition of Ni/C ,Zr added,the clad layers are metallurgically bonded to the substrate with fine shape and free of pores and cracks.

在楔横轧模具钢55Mn表面采用同轴送粉CO2激光熔覆WE—TiCp／镍基合金复合粉末，在增碳、锆条件下可获得成形好、无裂纹、与基体冶金结合的熔覆层。

A Ni-Cu based cladding was thus deposited, where the powdered Ni1015 was provided for the laser cladding process to form a smooth surface layer bonded metallurgically with Cu substrate, whose grain-refining microstructure is homogeneous, compact, void-free and crack-free.

用5 kW CO2激光器，通过优化激光工艺参数，在结晶器用铜合金表面预置添加SiC晶须的镍基自熔合金(Ni1015)粉，制备出表面平整、组织均匀致密、无气孔和裂纹等缺陷、与基体为冶金结合的Ni-Cu激光熔覆层。

Surface on 2Cr13 stainless steel was cladded with Co-based alloy using a high power carbon dioxide laser.

采用CO2 激光在 2Cr13不锈钢表面熔覆Co基合金，对熔覆层的组织结构及腐蚀性能进行了研究。

The corrosion behavior of the microwires in aqueous HF solution and melting NaOH were investigated respectively,and the anti-corrosion property of glass-coated pure copper microwires in strongly acid and strongly alkali were analyzed with the corrosion mechanism being discussed.

采用熔融纺丝法制备了玻璃包覆纯铜微丝，对微丝表面玻璃包覆层的去除进行了实验研究，评价了微丝在氢氟酸和熔融氢氧化钠中的腐蚀行为，分析了玻璃包覆纯铜微丝在强酸和强碱中的耐腐蚀性能，探讨了其腐蚀机理。

It is found that the ploating structure of copper power is related to mechanism of nucleus forming and content of silver;Thermal stability is affected by plating structure of silver-coated copper power.Silver-coated coppe...

结果表明：铜粉表面镀层结构与银离子形核长大机制和银含量有关；镀银铜粉的热稳定与表面镀层结构有关；完全包覆结构的镀银铜粉具有较好的热稳定性，抗氧化温度可以达到800℃以上。

Using plasma cladding technology, different content SiC ceramic powder and Ni-based self-fluxing powder on W6 steel were plasma-claded in order to obtain Ni-based SiC alloys coating.

为了制备符合热锻模使用性能要求的模膛表面强化层，采用等离子熔覆技术，以W6为基体，在基体表面对不同含量SiC陶瓷粉末、Ni基自熔性粉末进行等离子熔覆，得到Ni基SiC合金涂层。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。