表面涂层

In this paper, a new technology of laser transformation hardening which could replace the present method of gear case hardening is introduced. Its significant and economic value are analyzed. The key techniques of laser transformation hardening gear , such as surface pretreatment coating and its methods, laser scanning pattern, are discussed in detail.

通过分析可替代常规齿轮渗碳淬火的激光齿面淬火新技术研究的意义及经济价值，着重讨论了齿面激光淬火的关键技术--表面预处理涂层与方法、激光扫描方式。

The glassiness barrier layer mixes glass dust and mill addition into slip glaze, 50-180 um barrier layer is prepared by painting slip glaze on the surface of stainless steel, components of the glass dust according to the percent by weight comprises SiO2 37-40, B2O3 11-14, one or two kinds of Na2O and K2O18-20, one or two kinds of BaO and SrO 3.5-6.5, one or two kinds of Al2O3 and Cr2O3 2.5-10.5, one or two kinds of residues such as CaO, CaF and Na3AlF6, and the mill addition comprises agglomerants such as kaolin, borax, sodium nitrite and the like, adhesive agents such as CMC, PVA and the like and water.

该玻璃质壁垒层是将玻璃粉和磨加物混合成釉浆，涂在不锈钢表面制备50-180μm涂层，玻璃粉的成分按重量百分比：37-40 SiO 2 ，11-14 B 2 O 3 ，18-20 Na 2 O、K 2 O中的一种或两种，3.5-6.5 BaO、SrO中的一种或两种，2.5-10.5 Al 2 O 3 、Cr 2 O 3 中的一种或两种，余量CaO、CaF、Na 3 AlF 6 中的一种或多种；磨加物包括高岭土、硼砂、亚硝酸钠等粘结剂、CMC、PVA等密着剂和水。

Ni60B+30% WC composite coatings were produced by broad beam laser cladding with a gravity powder feed technique on 45 steel.

采用自重送粉法在 45钢表面宽带激光熔覆 Ni6 0B +30vo1%WC复合涂层，并进行现代显微分析。

Now days,fluorinated materials are widely used because of their low surface energy,chemical inertness,thermal stability,and low friction coefficient.

含氟聚合物材料具有极低的表面能、良好的拒水拒油和自清洁性、优异的耐热性能和化学稳定性等，在织物整理、功能涂层、航空航天、生物医用以及微电子等领域已得到广泛的应用。

With an old loofah burning charcoal research to fine, after the coated surface of the skin with the lard and mix thoroughly.

一个老烧炭研究，以优良丝瓜后与猪油调匀皮肤表面的涂层。

It was found that the larger the content of SiC, the more roughenss and looseness the coating was.

SiC的含量越多，涂层表面越粗糙，表层结构越疏松。

The results prove that using the laser power P=1.7Kw, scanning velocity V=4mm/s, spot diameter D=3mm, cladding thickness T=0.6mm, 50%: 50% Ni60:Ni-Cr-Cr_3C_2 as laser cladding process can obtain the laser coating with lubricous tight surface, tiny dilution rate ,fining microstructure and higher micro hardness and fine metallurgical-bonding Interface.

试验结果最终证明，激光熔覆工艺参数对熔覆层的宏观形貌、微观组织及涂层性能有极大的影响，在激光熔覆工艺参数为功率P=7Kw，速度Vs=5mm/S光斑直径D=3mm，厚度T=0.6mm，50%；50%的Ni60；Ni-Cr-Cr_3C_2的条件下，所得到熔覆层表面光滑致密、组织细小均匀、稀释率小、硬度高且与基体实现了良好的冶金结合，证明这种方法是一种在提高热锻模寿命方面有前途的方法。

Qing Chundou caused by excessive sebaceous gland secretion can be tender Luffa leaves and stems smashed juice coated surface of the skin with a loofah or wash water, paint on the lesion is also valid.

清Chundou由皮脂腺分泌过多引起的，可以投标丝瓜叶和茎粉碎汁用丝瓜或洗涤水，对皮肤损伤油漆涂层表面也是有效的。

It is introduced the sinter NdFeB permanent magnetic material surface preserative coating technology by writer research and development.

以及作者研究开发的烧结NdFeB永磁材料的表面防护涂层技术。

The method of laser cladding Co base alloy on stainless steel base material has been used to the repeated impact surface of the in outlet valve in methylamine pump system of nitrogenous producing line.

对氮肥生产线上甲胺泵中的进排液组合阀多冲接触表面进行激光熔覆，成功地实现了传统工艺难以完成的涂层强化工艺。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。